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Transparent Tygon Bleed Hose
1/8" Tygon Bleed Hose - 10ft Length
Pro Marine Item 259 is transparent 1/8" Tygon bleed hose supplied in a 10-foot length. It is used in compatible marine and PWC applications requiring small-diameter bleed line.
The transparent construction makes it easy to visually inspect fluid inside the hose, which is especially useful when servicing bleed, oil-related or other small fluid-line circuits.
Pro Marine also stocks several other Tygon hose sizes for fuel, oil-injection and bleed-line applications. Use the size chart below to compare the available options.
Inside Diameter: 1/8"
Length: 10 Feet
Material: Tygon
Color: Transparent
Application: Bleed / Small Fluid Line
Item Number: 259
What This Tygon Bleed Hose is Used For
Item 259 is intended for small-diameter marine applications requiring 1/8" transparent Tygon bleed hose.
Small bleed lines can become brittle, cracked, loose or damaged over time. Replacing deteriorated tubing helps maintain proper fluid routing and system operation.
Always verify the required inside diameter and application before replacing an existing hose.
Why Use Transparent Bleed Hose?
Transparent hose allows the line and the fluid inside it to be visually inspected during service.
Depending on the system, this can make it easier to identify:
- Whether fluid is present in the line
- Air pockets
- Visible contamination
- Flow interruptions
- Hose discoloration or deterioration
Tygon Hose Size Guide
| Item | Inside Diameter | Length | Description / Application | Product |
|---|---|---|---|---|
| 255 | 3/32" | 10 ft | Transparent small oil-injection hose | View 255 |
| 256 | 3/16" | 10 ft | Transparent PWC Tygon fuel hose | View 256 |
| 257 | 1/4" | 10 ft | PWC / MerCruiser pump-to-carb Tygon fuel hose | View 257 |
| 258 | 5/16" | 10 ft | PWC / Outboard transparent Tygon fuel hose | View 258 |
| 259 | 1/8" | 10 ft | Transparent Tygon bleed hose | Current Product |
Other Tygon Hose Options
3/32" Tygon Hose - 255
Transparent small-diameter Tygon hose for oil-injection applications.
View 3/32" Tygon Hose
3/16" Tygon Fuel Hose - 256
Transparent 3/16" Tygon fuel line for compatible PWC fuel-system applications.
View 3/16" Tygon Fuel Hose
1/4" Tygon Fuel Hose - 257
Transparent 1/4" Tygon fuel hose for compatible PWC and MerCruiser pump-to-carb applications.
View 1/4" Tygon Fuel Hose
5/16" Tygon Fuel Hose - 258
Transparent 5/16" Tygon fuel hose for compatible PWC and outboard fuel-system applications.
View 5/16" Tygon Fuel HoseFuel Line Clamp Tools
Pro Marine also stocks Oetiker clamp tools and a complete clamp assortment for marine hose applications that use Oetiker ear clamps.
Oetiker Standard Jaw Pincer - 14118CJ
Standard-jaw pincer tool for properly closing compatible Oetiker ear clamps used on marine hose connections.
View Oetiker Pincer Tool
Oetiker Clamp Pack with Tool - CLAMP-PACK
Complete assortment of commonly used Oetiker clamp sizes with the installation tool included.
View Oetiker Clamp PackChoosing the Correct Bleed Hose Size
Bleed hose should be matched to the exact fitting and fluid-line application. Item 259 has a 1/8" inside diameter.
Do not substitute another hose size simply because it appears close. A proper fit at each connection is important for preventing leaks and maintaining reliable fluid flow.
When Should Bleed Hose Be Replaced?
Small-diameter hose should be inspected during normal system service. Replacement should be considered if the hose shows:
- Cracking or splitting
- Hardening or brittleness
- Fluid leakage
- Loose connections at fittings
- Visible contamination or deterioration
- Abrasion or routing damage
Key Features and Benefits
- 1/8" inside diameter
- 10-foot length
- Transparent Tygon bleed hose
- Suitable for compatible marine and PWC bleed-line applications
- Transparent construction allows visual inspection of fluid in the line
- Additional Tygon fuel-hose sizes available
- Small oil-injection hose option available
- Oetiker pincer tool available for compatible clamp applications
- Complete Oetiker clamp assortment with tool available
Need Help Choosing the Right Hose?
Hose diameter, hose construction, application and clamp selection should all match the system being serviced.
Visit the Pro Marine Fuel Line Technical Center
FAQ
What size is Pro Marine item 259?
Item 259 is 1/8" ID Tygon bleed hose.
How much hose is included?
Item 259 is supplied in a 10-foot length.
Is this hose transparent?
Yes. The transparent construction allows visual inspection of fluid
inside the hose.
Is this a main fuel-supply hose?
No. Item 259 is listed as a bleed hose, not as the
larger main fuel-feed hose used between a tank and engine.
Is this sold by the foot?
No. Item 259 is supplied as a 10-foot length.
Do you carry 3/32" Tygon hose?
Yes. Pro Marine stocks
item 255 3/32" Tygon hose
.
Do you carry larger Tygon fuel hose?
Yes. Pro Marine stocks
3/16",
1/4"
and
5/16"
Tygon fuel hose.
Do you sell an Oetiker clamp installation tool?
Yes. The
Oetiker 14118CJ Standard Jaw Pincer
is available for compatible ear-clamp applications.
Do you sell a clamp assortment?
Yes. The
Pro Marine Oetiker Clamp Pack with Tool
includes commonly used clamp sizes and the installation tool.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Parts must be new, unused, and in original packaging.
- Installed parts are not returnable.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Part Numbers and Terms
259, Tygon 259, 1/8 Tygon hose, 1/8 bleed hose, Tygon bleed hose, marine bleed hose, PWC bleed hose, small fluid hose, transparent bleed line, transparent Tygon tubing, oil bleed hose, marine bleed line, 255, 3/32 Tygon hose, 256, 3/16 Tygon fuel hose, 257, 1/4 Tygon fuel hose, 258, 5/16 Tygon fuel hose
Transparent Tygon Fuel Hose
5/16" Tygon Fuel Hose - 10ft Length
Pro Marine Item 258 is transparent 5/16" Tygon fuel hose supplied in a 10-foot length. It is used in compatible PWC and outboard fuel-system applications requiring 5/16" inside-diameter hose.
The transparent construction allows technicians to visually inspect fuel inside the line during installation, troubleshooting and routine fuel-system service.
Pro Marine stocks several Tygon hose sizes for fuel, oil-injection and bleed-line applications. Use the size chart below to compare all of the available options.
Inside Diameter: 5/16"
Length: 10 Feet
Material: Tygon
Color: Transparent
Applications: PWC / Outboard Fuel Systems
Item Number: 258
Compatible Applications
Item 258 is intended for fuel-system applications requiring 5/16" transparent Tygon fuel hose.
- PWC fuel systems requiring 5/16" ID hose
- Outboard fuel-system applications requiring 5/16" ID hose
- Other compatible small fuel circuits requiring this hose size and material
Always verify the required inside diameter and hose application before replacing an existing fuel line.
Why Use Transparent Tygon Fuel Hose?
Transparent hose makes it easier to visually inspect what is happening inside the fuel line.
Depending on the system, this can help identify:
- Whether fuel is present in the line
- Obvious air pockets
- Fuel-flow interruptions
- Visible contamination
- Hose discoloration or deterioration
Tygon Hose Size Guide
| Item | Inside Diameter | Length | Description / Application | Product |
|---|---|---|---|---|
| 255 | 3/32" | 10 ft | Transparent small oil-injection hose | View 255 |
| 256 | 3/16" | 10 ft | Transparent PWC Tygon fuel hose | View 256 |
| 257 | 1/4" | 10 ft | PWC / MerCruiser pump-to-carb Tygon fuel hose | View 257 |
| 258 | 5/16" | 10 ft | PWC / Outboard transparent Tygon fuel hose | Current Product |
| 259 | 1/8" | 10 ft | Transparent Tygon bleed hose | View 259 |
Other Tygon Hose Options
3/32" Tygon Hose - 255
Transparent small-diameter Tygon hose for PWC oil-injection applications. Supplied in a 10-foot length.
View 3/32" Tygon Hose
3/16" Tygon Fuel Hose - 256
Transparent 3/16" Tygon fuel line for compatible PWC fuel-system applications.
View 3/16" Tygon Fuel Hose
1/4" Tygon Fuel Hose - 257
Transparent 1/4" Tygon fuel hose for compatible PWC and MerCruiser pump-to-carburetor applications.
View 1/4" Tygon Fuel Hose
1/8" Tygon Bleed Hose - 259
Transparent 1/8" Tygon bleed hose supplied in a 10-foot length.
View 1/8" Tygon Bleed HoseFuel Line Clamp Tools
Pro Marine also stocks Oetiker clamp tools and a complete clamp assortment for marine hose applications that use Oetiker ear clamps.
Oetiker Standard Jaw Pincer - 14118CJ
Standard-jaw pincer tool for properly closing compatible Oetiker ear clamps used on marine hose connections.
View Oetiker Pincer Tool
Oetiker Clamp Pack with Tool - CLAMP-PACK
Complete assortment of commonly used Oetiker clamp sizes with the installation tool included. Ideal for marine technicians servicing multiple hose sizes.
View Oetiker Clamp PackChoosing the Correct Tygon Hose Size
Tygon hose should be matched to the fitting and fuel-system application. Item 258 has a 5/16" inside diameter.
Verify the original hose size before installation. Do not substitute 1/4", 3/16" or another hose diameter simply because the connection appears similar.
When Should Tygon Fuel Hose Be Replaced?
Inspect fuel hose during routine fuel-system service and replace it when deterioration is found.
Common reasons for replacement include:
- Cracks or splits
- Hardening or brittleness
- Fuel leakage
- Loose connections at fittings
- Severe discoloration or deterioration
- Abrasion or routing damage
Key Features and Benefits
- 5/16" inside diameter
- 10-foot length
- Transparent Tygon fuel hose
- Useful for compatible PWC fuel-system applications
- Useful for compatible outboard fuel-system applications
- Transparent construction allows visual inspection of the fuel line
- Additional Tygon fuel-hose sizes available
- Oil-injection and bleed-hose options available
- Oetiker pincer tool available for compatible clamp applications
- Complete Oetiker clamp assortment with tool available
Need Help Choosing the Right Fuel Hose?
Hose diameter, hose construction, application and clamp selection all need to match the system being serviced.
Visit the Pro Marine Fuel Line Technical Center
FAQ
What size is Pro Marine item 258?
Item 258 is 5/16" ID Tygon fuel hose.
How much hose is included?
Item 258 is supplied in a 10-foot length.
Is this hose transparent?
Yes. The transparent construction allows visual inspection of fuel
inside the line.
Does this hose fit PWC applications?
Yes. Item 258 is used in compatible PWC fuel systems requiring
5/16" Tygon hose.
Can this hose be used in outboard fuel systems?
Yes. It is also suitable for compatible outboard applications requiring
5/16" Tygon fuel hose.
Is this hose sold by the foot?
No. Item 258 is supplied as a 10-foot length.
Do you carry smaller Tygon fuel hose?
Yes. Pro Marine stocks
3/16" Tygon fuel hose
and
1/4" Tygon fuel hose
.
Do you carry oil-injection hose?
Yes. Pro Marine stocks
item 255 3/32" Tygon hose
for small oil-injection line applications.
Do you carry Tygon bleed hose?
Yes. Pro Marine stocks
item 259 1/8" Tygon bleed hose
.
Do you sell an Oetiker clamp installation tool?
Yes. The
Oetiker 14118CJ Standard Jaw Pincer
is available for compatible Oetiker ear-clamp applications.
Do you sell a complete clamp assortment?
Yes. The
Pro Marine Oetiker Clamp Pack with Tool
includes common clamp sizes and the installation tool.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Parts must be new, unused, and in original packaging.
- Installed parts are not returnable.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Part Numbers and Terms
258, Tygon 258, 5/16 Tygon hose, 5/16 Tygon fuel hose, 5/16 fuel line, PWC fuel hose, PWC fuel line, outboard fuel hose, outboard fuel line, transparent fuel hose, transparent fuel line, Tygon fuel hose, Tygon hose 10ft, marine fuel hose, 255, 3/32 Tygon hose, 256, 3/16 Tygon fuel hose, 257, 1/4 Tygon fuel hose, 259, 1/8 Tygon bleed hose
Transparent Tygon Fuel Hose
1/4" Tygon Fuel Hose - 10ft Length
Pro Marine Item 257 is transparent 1/4" Tygon fuel hose supplied in a 10-foot length. It is used in compatible PWC fuel systems and in MerCruiser fuel-pump-to-carburetor applications requiring 1/4" inside-diameter hose.
The transparent construction allows visual inspection of fuel inside the hose, making it useful when diagnosing or servicing small fuel-system circuits.
Pro Marine stocks multiple Tygon hose sizes for fuel, oil-injection and bleed-line applications. Compare all available sizes in the chart below.
Inside Diameter: 1/4"
Length: 10 Feet
Material: Tygon
Color: Transparent
Applications: PWC Fuel Systems / MerCruiser Pump-to-Carb Fuel Line
Item Number: 257
Compatible Applications
Item 257 is intended for fuel-system applications requiring 1/4" transparent Tygon fuel hose.
- PWC fuel-line applications requiring 1/4" ID hose
- MerCruiser fuel-pump-to-carburetor hose applications requiring 1/4" ID line
- Other compatible small fuel-system circuits requiring this hose size and material
Always verify the required hose size and application before replacing an existing fuel line.
MerCruiser Pump-to-Carb Fuel Hose
Item 257 is also useful for compatible MerCruiser pump-to-carburetor fuel-line applications requiring 1/4" hose.
This section of the fuel system carries fuel from the fuel pump toward the carburetor. Verify the original hose diameter and fuel-system configuration before installation.
Why Use Transparent Tygon Fuel Hose?
Transparent fuel hose makes it possible to visually inspect the fuel inside the line during service.
Depending on the application, this can help identify:
- Whether fuel is present in the line
- Obvious air pockets
- Fuel-flow interruptions
- Visible contamination
- Line deterioration or discoloration
Tygon Hose Size Guide
| Item | Inside Diameter | Length | Description / Application | Product |
|---|---|---|---|---|
| 255 | 3/32" | 10 ft | Transparent small oil-injection hose | View 255 |
| 256 | 3/16" | 10 ft | Transparent PWC Tygon fuel hose | View 256 |
| 257 | 1/4" | 10 ft | PWC / MerCruiser pump-to-carb Tygon fuel hose | Current Product |
| 258 | 5/16" | 10 ft | Transparent PWC and outboard Tygon fuel hose | View 258 |
| 259 | 1/8" | 10 ft | Transparent Tygon bleed hose | View 259 |
Other Tygon Hose Options
3/32" Tygon Hose - 255
Transparent small-diameter Tygon hose for PWC oil-injection applications. Supplied in a 10-foot length.
View 3/32" Tygon Hose
3/16" Tygon Fuel Hose - 256
Transparent 3/16" Tygon fuel line for compatible PWC fuel-system applications.
View 3/16" Tygon Fuel Hose
5/16" Tygon Fuel Hose - 258
Transparent 5/16" Tygon fuel hose for compatible PWC and outboard fuel-system applications.
View 5/16" Tygon Fuel Hose
1/8" Tygon Bleed Hose - 259
Transparent 1/8" Tygon bleed hose supplied in a 10-foot length.
View 1/8" Tygon Bleed HoseFuel Line Clamp Tools
Pro Marine also stocks Oetiker clamp installation tools and a complete clamp assortment for marine fuel-line applications that use Oetiker ear clamps.
Oetiker Standard Jaw Pincer - 14118CJ
Standard-jaw pincer tool for properly closing compatible Oetiker ear clamps used on marine hose connections.
View Oetiker Pincer Tool
Oetiker Clamp Pack with Tool - CLAMP-PACK
Complete assortment of commonly used Oetiker clamp sizes with the installation tool included. Ideal for marine technicians servicing multiple hose sizes.
View Oetiker Clamp PackChoosing the Correct Tygon Hose Size
Tygon hose should be matched to the fitting and fuel-system application. Item 257 has a 1/4" inside diameter.
Do not substitute a 3/16" or 5/16" hose simply because the fitting appears close in size. The hose must fit the fuel-system connection properly and match the original application.
When Should Tygon Fuel Hose Be Replaced?
Inspect small fuel lines during normal fuel-system maintenance. Replace hose that shows signs such as:
- Cracks or splitting
- Hardening or brittleness
- Fuel leakage
- Loose hose-to-fitting connections
- Severe discoloration or deterioration
- Abrasion or routing damage
Key Features and Benefits
- 1/4" inside diameter
- 10-foot length
- Transparent Tygon fuel hose
- Fits compatible PWC fuel-system applications
- Fits compatible MerCruiser pump-to-carburetor applications
- Transparent construction allows visual inspection of fuel flow
- Additional Tygon fuel-hose sizes available
- Oil-injection and bleed-hose options also available
- Oetiker pincer tool available for compatible clamp applications
- Complete Oetiker clamp assortment with tool available
Need Help Choosing the Right Fuel Hose?
Hose diameter, hose construction, application and clamp selection all matter when servicing marine fuel systems.
Visit the Pro Marine Fuel Line Technical Center
FAQ
What size is Pro Marine item 257?
Item 257 is 1/4" ID Tygon fuel hose.
How much hose is included?
The hose is supplied in a 10-foot length.
Is this hose transparent?
Yes. Its transparent construction allows visual inspection of fuel
inside the hose.
Does this hose fit PWC applications?
Yes. Item 257 is used in compatible PWC fuel systems requiring
1/4" Tygon hose.
Can this be used on MerCruiser engines?
Yes. Item 257 is listed for compatible
MerCruiser fuel-pump-to-carburetor applications
requiring 1/4" hose.
Is this sold by the foot?
No. Item 257 is supplied as a 10-foot length.
Do you carry a smaller Tygon fuel hose?
Yes. Pro Marine stocks
3/16" Tygon fuel hose
.
Do you carry a larger Tygon fuel hose?
Yes. Pro Marine stocks
5/16" Tygon fuel hose
.
Do you sell oil-injection and bleed hose?
Yes. Pro Marine also stocks
3/32" Tygon oil-injection hose
and
1/8" Tygon bleed hose
.
Do you sell Oetiker clamp tools?
Yes. The
Oetiker 14118CJ Standard Jaw Pincer
is available for compatible Oetiker ear-clamp installations.
Do you sell a complete clamp assortment?
Yes. The
Pro Marine Oetiker Clamp Pack with Tool
includes common clamp sizes and the installation tool.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Parts must be new, unused, and in original packaging.
- Installed parts are not returnable.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Part Numbers and Terms
257, Tygon 257, 1/4 Tygon hose, 1/4 Tygon fuel hose, 1/4 fuel line, PWC fuel hose, PWC fuel line, MerCruiser fuel hose, MerCruiser pump to carb hose, pump to carb fuel line, carburetor fuel hose, transparent fuel hose, transparent fuel line, Tygon fuel hose 10ft, 255, 3/32 Tygon hose, 256, 3/16 Tygon fuel hose, 258, 5/16 Tygon fuel hose, 259, 1/8 Tygon bleed hose
7381563
7381567
Transparent Tygon Fuel Hose
3/16" Tygon Fuel Hose - 10ft Length
Pro Marine Item 256 is transparent 3/16" Tygon fuel hose supplied in a convenient 10-foot length. This small-diameter fuel line is commonly used for PWC fuel-system applications where 3/16" inside-diameter hose is required.
The transparent construction makes it easier to visually inspect the fuel line during installation and service and can help identify fuel, air pockets or contamination inside the hose.
Pro Marine stocks several Tygon hose sizes for PWC, outboard, fuel-line, oil-injection and bleed-hose applications. Use the Tygon hose size chart below to quickly compare the available options.
Inside Diameter: 3/16"
Length: 10 Feet
Material: Tygon
Color: Transparent
Application: PWC Fuel Line
Item Number: 256
What This Tygon Fuel Hose is Used For
Item 256 is used for small-diameter fuel-line applications requiring 3/16" Tygon fuel hose. It is particularly useful when servicing PWC fuel systems that use this hose diameter.
Fuel hose can deteriorate with age and exposure to fuel, heat and the operating environment. Hose that has become hard, brittle, cracked, damaged or otherwise deteriorated should be inspected and replaced as needed.
Always verify the required inside diameter and application before replacing an existing fuel hose.
Benefits of Transparent Tygon Fuel Hose
One of the useful characteristics of transparent Tygon hose is the ability to visually inspect the fuel inside the line.
Depending on the system, this can help during fuel-system diagnosis and service by making it easier to identify whether fuel is present in the line and spot obvious air pockets or contamination.
Pro Marine stocks Tygon hose in several inside diameters. Match the hose size to the fitting and original fuel, oil-injection or bleed-line application.
Use the chart below to compare all of the Tygon hose options in this section.
Tygon Hose Size Guide
| Item | Inside Diameter | Length | Description / Application | Product |
|---|---|---|---|---|
| 255 | 3/32" | 10 ft | Transparent Tygon small oil-injection hose | View 255 |
| 256 | 3/16" | 10 ft | Transparent Tygon fuel hose for PWC applications | Current Product |
| 257 | 1/4" | 10 ft | Transparent Tygon fuel hose | View 257 |
| 258 | 5/16" | 10 ft | Transparent Tygon fuel hose | View 258 |
| 259 | 1/8" | 10 ft | Transparent Tygon bleed hose | View 259 |
Other Tygon Hose Options
3/32" Tygon Hose - 255
Transparent small-diameter Tygon hose for PWC oil-injection line applications. Supplied in a 10-foot length.
View 3/32" Tygon Hose
1/4" Tygon Fuel Hose - 257
Transparent 1/4" Tygon fuel hose supplied in a 10-foot length.
View 1/4" Tygon Fuel Hose
5/16" Tygon Fuel Hose - 258
Transparent 5/16" Tygon fuel hose supplied in a 10-foot length.
View 5/16" Tygon Fuel Hose
1/8" Tygon Bleed Hose - 259
Transparent 1/8" Tygon bleed hose supplied in a 10-foot length.
View 1/8" Tygon Bleed HoseFuel Line Clamp Tools
Pro Marine also stocks Oetiker installation tools and a complete clamp assortment for marine fuel-line applications that use Oetiker ear clamps. Always match the clamp to the specific hose and fitting being serviced.
Oetiker Standard Jaw Pincer - 14118CJ
Standard-jaw pincer tool for properly closing compatible Oetiker ear clamps used on marine hose connections.
View Oetiker Pincer Tool
Oetiker Clamp Pack with Tool - CLAMP-PACK
Complete Pro Marine Oetiker clamp assortment with the installation tool included. A convenient option for shops and technicians working with multiple marine hose sizes.
View Oetiker Clamp PackChoosing the Correct Tygon Hose Size
Tygon hose should be matched to the inside diameter required by the fitting and fuel system. Item 256 has a 3/16" inside diameter.
When replacing existing hose, verify the original hose diameter and the application before installation. Do not substitute another diameter simply because it appears close in size.
When Should Tygon Fuel Hose Be Replaced?
Inspect small fuel lines as part of normal fuel-system service. Replacement should be considered if the hose shows:
- Cracks or splits
- Hardening or brittleness
- Visible deterioration
- Fuel leakage
- Loose connections at fittings
- Damage from abrasion or improper routing
Key Features and Benefits
- 3/16" inside diameter
- 10-foot length
- Transparent Tygon fuel hose
- Useful for PWC fuel-line applications requiring 3/16" hose
- Transparent construction allows visual inspection of the fuel line
- Multiple additional Tygon hose sizes available
- Oil-injection and bleed-hose options available
- Oetiker pincer tool available for compatible clamp applications
- Complete Oetiker clamp pack with tool available
Need Help Choosing the Right Fuel Hose?
Fuel-line diameter, hose type, fittings and clamp selection all need to match the application. Use the Pro Marine Fuel Line Technical Center to compare the different fuel-hose options and related installation parts.
Visit the Pro Marine Fuel Line Technical Center
FAQ
What size is Pro Marine item 256?
Item 256 is 3/16" ID Tygon fuel hose.
How much hose is included?
Item 256 is supplied in a 10-foot length.
Is this hose transparent?
Yes. The transparent construction allows visual inspection of the fuel
line during service.
Is this hose sold by the foot?
No. Item 256 is supplied as a 10-foot length.
Do you have a smaller Tygon hose?
Yes. Pro Marine stocks
item 255 3/32" Tygon hose
for small oil-injection line applications.
Do you carry larger Tygon fuel hose?
Yes. Pro Marine also stocks
1/4" Tygon fuel hose
and
5/16" Tygon fuel hose
.
Do you carry Tygon bleed hose?
Yes. Pro Marine stocks
item 259 1/8" Tygon bleed hose
.
Do you sell an Oetiker clamp installation tool?
Yes. The
Oetiker 14118CJ Standard Jaw Pincer
is available for compatible Oetiker ear-clamp applications.
Do you sell a clamp assortment?
Yes. The
Pro Marine CLAMP-PACK
includes an assortment of Oetiker clamps and the installation tool.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Parts must be new, unused, and in original packaging.
- Installed parts are not returnable.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Part Numbers and Terms
256, Tygon 256, 3/16 Tygon hose, 3/16 fuel hose, 3/16 fuel line, PWC fuel hose, PWC fuel line, Tygon fuel hose, transparent fuel hose, transparent fuel line, Tygon tubing, Tygon hose 10ft, small fuel hose, PWC fuel system, 255, 3/32 Tygon hose, 257, 1/4 Tygon fuel hose, 258, 5/16 Tygon fuel hose, 259, 1/8 Tygon bleed hose
Transparent Tygon Hose
3/32" Tygon Small Oil Injection Hose - 10ft Length
Pro Marine Item 255 is transparent 3/32" Tygon hose supplied in a 10-foot length. This small-diameter flexible tubing is commonly used for PWC oil-injection line applications where 3/32" inside-diameter hose is required.
The transparent construction makes it easier to visually inspect the line and see fluid within the hose, which is particularly useful when servicing small oil-injection systems.
Need another size? Pro Marine stocks a range of Tygon hose from 3/32" through 5/16", including fuel-hose and bleed-hose options. See the complete size chart below.
Inside Diameter: 3/32"
Length: 10 Feet
Material: Tygon
Color: Transparent
Primary Application: PWC Small Oil Injection Line
Item Number: 255
What This Tygon Hose is Used For
Item 255 is intended for small-diameter fluid-line applications requiring 3/32" Tygon tubing. Pro Marine lists this hose primarily for PWC small oil-injection line applications.
Small oil-injection hoses can become hard, brittle, cracked or damaged with age. Replacing deteriorated tubing is an important part of servicing an oil-injected PWC or other compatible system.
Always verify the required inside diameter and application before replacing an existing hose.
Why Use Transparent Tygon Hose?
Transparent tubing provides an important advantage on small fluid lines: it allows the technician to visually inspect what is happening inside the hose.
Depending on the system, this can make it easier to check for fluid in the line and identify obvious air pockets or contamination during service.
Pro Marine stocks multiple transparent Tygon hose sizes for PWC, outboard, fuel-line, oil-injection and bleed-hose applications.
Use the size chart below to compare the available options and go directly to the correct product page.
Tygon Hose Size Guide
| Item | Inside Diameter | Length | Description / Application | Product |
|---|---|---|---|---|
| 255 | 3/32" | 10 ft | PWC small oil-injection line - transparent | View 255 |
| 256 | 3/16" | 10 ft | PWC transparent Tygon fuel hose | View 256 |
| 257 | 1/4" | 10 ft | PWC transparent fuel hose / MerCruiser pump-to-carb applications | View 257 |
| 258 | 5/16" | 10 ft | PWC and outboard transparent Tygon fuel hose | View 258 |
| 259 | 1/8" | 10 ft | Universal transparent Tygon bleed hose | View 259 |
Other Tygon Hose Options
3/16" Tygon Fuel Hose - 256
Transparent 3/16" Tygon fuel hose for PWC applications. Supplied in a 10-foot length.
View 3/16" Tygon Hose
1/4" Tygon Fuel Hose - 257
Transparent 1/4" Tygon fuel hose for PWC and listed MerCruiser pump-to-carb applications.
View 1/4" Tygon Hose
5/16" Tygon Fuel Hose - 258
Transparent 5/16" Tygon fuel hose for PWC and outboard applications. Supplied in a 10-foot length.
View 5/16" Tygon Hose
1/8" Tygon Bleed Hose - 259
Universal transparent 1/8" Tygon bleed hose supplied in a 10-foot length.
View 1/8" Tygon Bleed HoseFuel Line Clamp Tools
When servicing marine fuel, oil-injection and bleed-line systems, Pro Marine also stocks Oetiker clamp tools and a complete clamp assortment for applications that use Oetiker ear clamps.
Oetiker Standard Jaw Pincer - 14118CJ
Standard-jaw pincer tool for properly closing compatible Oetiker ear clamps used on marine hose connections.
View Oetiker Pincer Tool
Oetiker Clamp Pack with Tool - CLAMP-PACK
Pro Marine clamp assortment containing 130 pieces plus the installation tool. A convenient option for marine shops and technicians servicing multiple hose sizes.
View Oetiker Clamp PackChoosing the Correct Tygon Hose Size
Hose size should be matched to the fitting and system being serviced. Do not substitute a larger or smaller hose simply because it appears close in size.
For an existing oil-injection, fuel or bleed-line system, compare the original hose size and application before replacement. If the application is uncertain, verify the engine or PWC model and the required hose size before installation.
Key Features and Benefits
- 3/32" inside diameter Tygon tubing
- 10-foot length
- Transparent construction
- Designed for small oil-injection line applications
- Commonly used in PWC service applications
- Allows visual inspection of fluid inside the hose
- Additional Tygon sizes available from 3/16" through 5/16"
- 1/8" Tygon bleed hose also available
- Oetiker pincer tool available for compatible ear-clamp applications
- Complete Pro Marine Oetiker clamp pack and tool available
Need Help Choosing the Right Hose?
Hose diameter and application both matter when replacing marine fuel, oil-injection and bleed lines. Pro Marine's Fuel Line Technical Center brings together our hose sizes, fuel-line classifications, clamps and related installation information.
Visit the Pro Marine Fuel Line Technical Center
FAQ
What size is Pro Marine item 255?
Item 255 is 3/32" ID Tygon hose supplied in a
10-foot length.
What is 3/32" Tygon hose used for?
Pro Marine lists item 255 primarily for
PWC small oil-injection line applications.
Is the hose transparent?
Yes. Item 255 is transparent, allowing the line and fluid inside it to
be visually inspected.
Is this hose sold by the foot?
No. Item 255 is supplied as a 10-foot length.
Do you carry larger Tygon fuel hose?
Yes. Pro Marine stocks
3/16",
1/4"
and
5/16"
transparent Tygon fuel hose.
Do you carry Tygon bleed hose?
Yes. Pro Marine stocks
item 259 1/8" Tygon bleed hose
in a 10-foot length.
Do you sell an Oetiker clamp installation tool?
Yes. The
Oetiker 14118CJ Standard Jaw Pincer
is available for compatible Oetiker ear-clamp applications.
Do you sell a complete Oetiker clamp assortment?
Yes. The
Pro Marine CLAMP-PACK
contains 130 pieces plus the installation tool.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Parts must be new, unused, and in original packaging.
- Installed parts are not returnable.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Part Numbers & Terms
255, Tygon 255, 3/32 Tygon hose, 3/32 oil injection hose, 3/32 oil line, PWC oil injection hose, PWC oil line, small oil injection line, transparent Tygon tubing, transparent oil hose, Tygon hose 10ft, Tygon tubing, 256, 3/16 Tygon fuel hose, 257, 1/4 Tygon fuel hose, 258, 5/16 Tygon fuel hose, 259, 1/8 Tygon bleed hose
MPI Type B Marine Fuel Hose
MPI 1/4" Marine Fuel Hose - Type B - Sold by the Foot
The MPI 315-014 1/4" Fuel Hose is bulk marine fuel line for applications using 1/4" inside-diameter hose. It is sold by the foot so boat owners and marine technicians can build the exact fuel-line length required for the installation.
This is the Type B version, commonly used in exposed and above-deck marine fuel-line applications where Type B hose is permitted.
Pro Marine also stocks the matching Oetiker 4-133 clamp, Pro Marine 8002 1/4" primer bulb, Oetiker installation tools and a 1/4" Type A fuel hose option.
Inside Diameter: 1/4"
Manufacturer: MPI Products
Fuel Hose Type: Type B Marine Fuel Hose
Sold: By the Foot
Recommended Clamp: Oetiker 4-133
Recommended Primer Bulb: Pro Marine 8002 - 1/4"
How to Order Bulk Fuel Hose
This fuel hose is sold by the foot. Enter the quantity based on the continuous hose length required for your installation.
For example, if your fuel-line run requires 6 feet of hose, order a quantity of 6.
Type B Marine Fuel Hose
Marine fuel hose classifications identify how the hose is intended to be used within a boat's fuel system.
Type B fuel hose is commonly used for exposed or above-deck applications where that hose classification is appropriate. It does not carry the same additional fire-test classification as Type A marine fuel hose.
If your fuel line passes through an enclosed area or the installation specifically requires Type A hose, use the Type A option linked below.
For installations requiring the additional Type A fire-resistant classification, use the MPI 314-1 1/4" Type A fuel hose.
View 1/4" Type A Marine Fuel Hose
Complete Your 1/4" Fuel Line Setup
Build a complete 1/4" outboard fuel-line setup with the matching clamp, primer bulb and installation tools shown below.
Oetiker 4-133 Ear Clamp - 10 Pack
Matching Oetiker ear clamp for the MPI 315-014 1/4" Type B fuel hose.
Clamp Size: 4-133
View Oetiker 4-133 Clamp
Pro Marine 8002 - 1/4" Primer Bulb
Matching 1/4" primer bulb for building or repairing marine outboard fuel-line assemblies using 1/4" hose.
Hose Size: 1/4"
View 1/4" Primer Bulb
Oetiker Standard Jaw Pincer Tool
Installation tool for properly closing Oetiker ear clamps on marine fuel-line connections.
View Oetiker Pincer Tool
Oetiker Clamp Pack with Tool
Complete assortment of common Oetiker clamp sizes with the installation tool included. A convenient option for technicians and marine shops servicing multiple hose sizes.
View Oetiker Clamp Pack1/4" Type A Alternative
MPI 1/4" Type A Marine Fuel Hose - 314-1
Use the Type A version when the installation requires the additional Type A fire-resistant marine fuel-hose classification.
Inside Diameter: 1/4"
Fuel Hose Type: Type A
Matching Clamp: Oetiker 4-170
1/4" Fuel Hose Comparison
| Fuel Hose | Classification | Matching Clamp | Primer Bulb |
|---|---|---|---|
| MPI 315-014 | Type B | Oetiker 4-133 | Pro Marine 8002 - 1/4" |
| MPI 314-1 | Type A | Oetiker 4-170 | Pro Marine 8002 - 1/4" |
Why Do Two 1/4" Hoses Use Different Clamps?
The 1/4" measurement refers to the hose's inside diameter. It does not determine the outside diameter of the hose.
Type A and Type B hose use different constructions and wall thicknesses, so their outside diameters can be different even when both have a 1/4" inside diameter.
That is why the MPI 315-014 Type B hose uses Oetiker 4-133, while the MPI 314-1 Type A hose uses Oetiker 4-170.
What This Fuel Hose is Used For
MPI 315-014 1/4" Type B fuel hose can be used for building, replacing or repairing marine fuel lines where 1/4" hose and a Type B classification are appropriate.
Because this hose is sold in bulk by the foot, it can be paired with the correct primer bulb, fittings and clamps to create a custom-length fuel-line assembly.
Building a 1/4" Outboard Fuel Line
A typical 1/4" outboard fuel-line assembly may require:
- MPI 315-014 1/4" Type B marine fuel hose
- Pro Marine 8002 1/4" primer bulb
- Correct tank-side fitting or connection
- Correct engine-side fitting or connector
- Oetiker 4-133 ear clamps
- Oetiker pincer installation tool
The exact components required depend on the engine, fuel tank and overall fuel-system layout.
Primer Bulb Selection
Primer bulb fittings should match the inside diameter of the fuel hose. For this 1/4" hose, use the Pro Marine 8002 1/4" Primer Bulb.
View Pro Marine 8002 1/4" Primer Bulb
Key Features & Benefits
- 1/4" inside diameter
- MPI Products marine fuel hose
- Type B marine fuel-hose construction
- Commonly used in exposed and above-deck applications where Type B hose is permitted
- Sold by the foot for custom-length installations
- Matching Oetiker 4-133 clamp available
- Matching Pro Marine 8002 1/4" primer bulb available
- Type A 1/4" alternative available
- Oetiker installation tool available
- Complete Oetiker clamp assortment with tool available
Need Help Choosing the Right Marine Fuel Hose?
Choosing the correct marine fuel line depends on hose diameter, installation location, fuel-hose classification, fittings, primer bulb size and clamp size.
Visit the Pro Marine Fuel Line Technical Center
FAQ
What size is MPI 315-014?
It has a 1/4" inside diameter.
Is this hose sold by the foot?
Yes. Order the quantity corresponding to the total number of feet required.
What type of marine fuel hose is this?
This is MPI Type B marine fuel hose.
Where is Type B fuel hose commonly used?
Type B hose is commonly used for exposed and above-deck fuel-line
applications where that classification is permitted.
Which clamp fits MPI 315-014?
Use the
Oetiker 4-133 ear clamp
.
Which primer bulb fits this 1/4" hose?
Use the
Pro Marine 8002 1/4" Primer Bulb
.
Can I use the same primer bulb with the 1/4" Type A hose?
Yes. Both the 1/4" Type A and Type B hoses use a 1/4" inside diameter, so
the Pro Marine 8002 1/4" primer bulb is the matching hose size.
What if I need Type A 1/4" fuel hose?
Use the
MPI 314-1 1/4" Type A fuel hose
.
Which clamp fits the 1/4" Type A hose?
The Type A MPI 314-1 hose uses the
Oetiker 4-170 ear clamp
.
Why do the Type A and Type B 1/4" hoses use different clamps?
The 1/4" measurement is the inside diameter. Different hose construction
changes the outside diameter, so the clamp must be matched to the specific hose.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Parts must be new, unused and in original packaging.
- Installed parts are not returnable.
- Return authorization is required before sending items back.
Need help choosing the correct fuel hose?
Contact Pro Marine
Phone: 941-721-3000
Searchable Part Numbers & Terms
315-014, MPI 315-014, 1/4 fuel hose, 1/4 marine fuel hose, 1/4 boat fuel line, 1/4 outboard fuel hose, Type B marine fuel hose, Type B fuel line, marine fuel line by the foot, bulk marine fuel hose, above deck fuel hose, MPI fuel line, Oetiker 4-133, 4-133 fuel hose clamp, 8002, Pro Marine 8002, 1/4 primer bulb, marine primer bulb, outboard primer bulb, 314-1, 1/4 Type A fuel hose, Oetiker 4-170, marine fuel hose, outboard fuel line, boat fuel hose
USCG Type B1/B2 Marine Fuel Hose
MPI 5/16" Marine Fuel Hose - Type B1/B2 - Sold by the Foot
Build or replace your outboard fuel line with 5/16" USCG Type B1/B2 marine fuel hose. This MPI bulk fuel hose is sold by the foot so you can order the length required for your installation without purchasing a preassembled fuel line.
Type B marine fuel hose is commonly used in exposed and above-deck outboard fuel-line applications where Type B hose is appropriate for the installation.
Need a complete setup? Pro Marine also stocks the correct Oetiker clamp, 5/16" primer bulb, Oetiker pincer tool and a complete clamp assortment with the installation tool included.
Inside Diameter: 5/16"
USCG Rating: Type B1/B2
Manufacturer: MPI Products
Color: Black
Sold: By the Foot
Recommended Clamp: Oetiker 4-153
Recommended Primer Bulb: Pro Marine 8004 - 5/16"
How to Order Bulk Fuel Hose
This hose is sold by the foot. Select the quantity based on the total continuous length of hose required for your installation.
For example, if you need approximately 8 feet of fuel hose, order a quantity of 8.
What Does USCG Type B1/B2 Fuel Hose Mean?
Marine fuel hose classifications help identify where and how a hose is designed to be used within a boat's fuel system.
The "B" designation identifies marine fuel hose that does not carry the same USCG fire-test requirement as Type A hose. For that reason, Type B hose is commonly associated with exposed or above-deck fuel-line installations, while Type A hose is the appropriate choice where the installation requires the additional fire-resistant Type A classification.
The numbers "1" and "2" refer to fuel permeation performance. Type 1 is the lower-permeation classification and is the classification normally associated with fuel-feed hose intended to contain fuel continuously. Type 2 permits greater permeation and is used for applications such as certain fill and vent arrangements.
| Fuel Hose Type | General Use | Fire-Test Requirement |
|---|---|---|
| Type A1 | Fuel-feed applications including installations requiring Type A protection | Yes |
| Type A2 | Certain fill and vent applications requiring Type A protection | Yes |
| Type B1 | Fuel-feed applications where Type B hose is permitted | No Type A fire-test rating |
| Type B2 | Certain fill and vent applications where Type B hose is permitted | No Type A fire-test rating |
Do not choose fuel hose based on diameter alone. The required USCG hose classification depends on where and how the hose is installed.
For installations requiring Type A1/A2 marine fuel hose, use our 5/16" Type A fuel hose instead.
View 5/16" Type A Marine Fuel Hose
Complete Your 5/16" Fuel Line Setup
The correct hose is only one part of a reliable marine fuel-line installation. Pro Marine stocks the matching clamps, primer bulb and installation tools needed to build or service your fuel line.
Oetiker 4-153 Ear Clamp - 10 Pack
The matching Oetiker ear clamp for this MPI 5/16" Type B fuel hose. Provides a clean, secure connection at fuel fittings and components.
View Oetiker 4-153 Clamp
Pro Marine 8004 - 5/16" Primer Bulb
5/16" primer bulb for building or servicing a marine outboard fuel-line assembly using 5/16" fuel hose.
View 5/16" Primer Bulb
Oetiker Standard Jaw Pincer Tool
Installation tool for properly closing Oetiker ear clamps when assembling marine fuel lines.
View Oetiker Pincer Tool
Pro Marine Oetiker Clamp Pack with Tool
Complete assortment containing common Oetiker clamp sizes plus the installation tool. A convenient option for marine shops, technicians and customers servicing multiple hose sizes.
View Oetiker Clamp PackMercury OEM 5/16" Fuel Hose Available
Prefer the Mercury factory fuel hose? Pro Marine also stocks Mercury OEM 5/16" silver fuel hose sold by the foot.
The Mercury hose uses a different outside diameter than this MPI hose and therefore requires a different Oetiker clamp: 4-145.
Why Doesn't Every 5/16" Fuel Hose Use the Same Clamp?
5/16" identifies the hose's inside diameter, not its outside diameter. Different hose constructions can have different wall thicknesses and therefore different outside diameters.
That is why this MPI 315-056 Type B hose uses Oetiker clamp 4-153, while the Mercury OEM 5/16" silver hose uses Oetiker clamp 4-145.
Always match the clamp to the specific hose being installed rather than selecting a clamp based only on the hose's inside diameter.
What This Fuel Hose is Used For
This 5/16" bulk marine fuel hose can be used when building, repairing or replacing fuel lines in compatible marine applications where USCG Type B hose is appropriate.
Selling the hose by the foot allows boat owners and marine technicians to build the required length and add the appropriate primer bulb, connectors, fittings and clamps for the specific installation.
Building a 5/16" Outboard Fuel Line
A typical 5/16" outboard fuel-line setup may require:
- 5/16" marine fuel hose
- 5/16" primer bulb
- Correct engine-side fuel fitting or connector
- Correct tank-side fitting or connection
- Correctly sized Oetiker ear clamps
- Oetiker pincer tool for clamp installation
The exact components depend on the engine, fuel tank and layout of the boat's fuel system.
Key Features & Benefits
- 5/16" inside diameter marine fuel hose
- USCG Type B1/B2 rated hose
- MPI Products marine fuel line
- Designed for exposed and above-deck applications where Type B hose is permitted
- Sold by the foot for custom-length installations
- Matching Oetiker 4-153 clamp available
- Compatible 5/16" primer bulb available
- Type A 5/16" alternative available for applications requiring Type A hose
- Mercury OEM 5/16" silver fuel hose alternative available
Need Help Choosing the Right Marine Fuel Hose?
Hose diameter is only one part of choosing the correct marine fuel line. The hose classification, installation location, fuel-system design, fittings, primer bulb and clamp size should also be considered.
Visit the Pro Marine Fuel Line Technical Center
FAQ
What size is this fuel hose?
This hose has a 5/16" inside diameter.
Is the hose sold by the foot?
Yes. Order the quantity corresponding to the number of feet needed for
your installation.
What does USCG Type B mean?
Type B marine fuel hose meets the applicable SAE marine fuel-hose
performance classification but does not carry the same USCG fire-test
requirement as Type A hose. It is commonly used in exposed or above-deck
applications where Type B hose is permitted.
What is the difference between B1 and B2?
The number identifies the hose's permeation classification. Type 1 has
the lower permeation limit and is normally associated with fuel-feed
applications intended to contain fuel continuously. Type 2 allows greater
permeation and is used for certain other fuel-system applications.
Can I use this hose below deck?
Fuel-hose requirements depend on the installation. For enclosed or
below-deck installations requiring the Type A fire-resistant
classification, use the
5/16" Type A fuel hose
.
Which Oetiker clamp fits this hose?
Use the
Oetiker 4-153 ear clamp
with this MPI 315-056 hose.
Which primer bulb fits this hose?
The
Pro Marine 8004 5/16" Primer Bulb
is the matching hose size.
Do you sell a Mercury OEM 5/16" fuel hose?
Yes. Pro Marine stocks
Mercury OEM 5/16" silver fuel hose
by the foot. The Mercury hose uses Oetiker clamp 4-145 rather than the
4-153 clamp used with this MPI hose.
Why are there different clamps for two 5/16" hoses?
The 5/16" measurement refers to inside diameter. Hose outside diameter can
vary depending on wall thickness and construction, so the correct Oetiker
clamp must be matched to the specific hose.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Parts must be new, unused, and in original packaging.
- Installed parts are not returnable.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
315-056, MPI 315-056, 5/16 fuel hose, 5/16 marine fuel hose, 5/16 boat fuel line, 5/16 outboard fuel hose, USCG Type B fuel hose, Type B1 fuel hose, Type B2 fuel hose, marine fuel line by the foot, bulk marine fuel hose, above deck fuel hose, outboard fuel line, boat fuel hose, Oetiker 4-153, 4-153 fuel hose clamp, 5/16 primer bulb, marine primer bulb, Mercury 5/16 fuel hose, Type A marine fuel hose, Type B marine fuel hose
MPI Type B Marine Fuel Hose
MPI 3/8" Marine Fuel Hose - Type B - Sold by the Foot
The MPI 375 3/8" Fuel Hose is bulk marine fuel line designed for applications using 3/8" inside-diameter hose. It is sold by the foot so you can purchase the continuous length needed for your boat or outboard fuel-system installation.
This is the Type B version, commonly used in exposed and above-deck marine fuel-line applications where Type B hose is appropriate.
Pro Marine also stocks the matching Oetiker 4-185 ear clamp, Pro Marine 8005 3/8" primer bulb, Oetiker installation tools and a 3/8" Type A alternative.
Inside Diameter: 3/8"
Manufacturer: MPI Products
Fuel Hose Type: Type B Marine Fuel Hose
Sold: By the Foot
Recommended Clamp: Oetiker 4-185
Recommended Primer Bulb: Pro Marine 8005 - 3/8"
How to Order Bulk Fuel Hose
This hose is sold by the foot. Enter the quantity based on the total continuous length required for your installation.
For example, if you need 8 feet of fuel hose, order a quantity of 8.
Type B Marine Fuel Hose
Type B marine fuel hose is commonly used in exposed or above-deck fuel-system applications where that hose classification is appropriate.
Type B hose does not carry the same additional fire-test classification associated with Type A marine fuel hose. If the installation requires Type A hose, use the 3/8" Type A option linked below.
For installations requiring the additional Type A fire-resistant classification, use the 3/8" Type A marine fuel hose.
View 3/8" Type A Marine Fuel Hose
Complete Your 3/8" Fuel Line Setup
Pro Marine stocks the correct clamp, primer bulb and installation tools needed to build or service a 3/8" marine fuel-line assembly.
Oetiker 4-185 Ear Clamp - 10 Pack
Matching Oetiker ear clamp for this 3/8" Type B hose. This same clamp is also used with the 3/8" Type A hose listed below.
Clamp: 4-185
View Oetiker 4-185 Clamp
Pro Marine 8005 - 3/8" Primer Bulb
Matching 3/8" primer bulb for building or repairing marine outboard fuel-line assemblies using 3/8" fuel hose.
Hose Size: 3/8"
View 3/8" Primer Bulb
Oetiker Standard Jaw Pincer Tool
Installation tool for properly closing Oetiker ear clamps on marine fuel-line connections.
View Oetiker Pincer Tool
Oetiker Clamp Pack with Tool
Complete assortment of commonly used Oetiker clamp sizes with the installation tool included. A convenient setup for marine shops, technicians and customers servicing multiple hose sizes.
View Oetiker Clamp Pack3/8" Type A Alternative
3/8" Type A Marine Fuel Hose - 375-1
Use the Type A version when the installation requires the additional Type A fire-resistant marine fuel-hose classification.
Inside Diameter: 3/8"
Fuel Hose Type: Type A
Matching Clamp: Oetiker 4-185
Primer Bulb: Pro Marine 8005 - 3/8"
3/8" Type A vs. Type B Fuel Hose
| Fuel Hose | Classification | Matching Clamp | Primer Bulb |
|---|---|---|---|
| 375 | Type B | Oetiker 4-185 | Pro Marine 8005 - 3/8" |
| 375-1 | Type A | Oetiker 4-185 | Pro Marine 8005 - 3/8" |
Same Clamp for Both 3/8" Fuel Hoses
Unlike some of the smaller fuel-hose sizes, both of these 3/8" fuel-line options use the same Oetiker 4-185 clamp.
That means the clamp selection stays the same whether you choose the Type A or Type B 3/8" hose. The main decision between the two hoses is the required marine fuel-hose classification for the installation.
What This Fuel Hose is Used For
The 375 3/8" Type B fuel hose is used for building, repairing or replacing marine fuel lines where 3/8" hose and Type B construction are appropriate.
Bulk hose sold by the foot makes it possible to build the required length and pair it with the correct primer bulb, fittings and clamps for the specific boat and engine installation.
Building a 3/8" Outboard Fuel Line
Depending on the application, a complete 3/8" fuel-line setup may include:
- 3/8" Type B marine fuel hose
- Pro Marine 8005 3/8" primer bulb
- Correct tank-side fitting or connector
- Correct engine-side fitting or connector
- Oetiker 4-185 ear clamps
- Oetiker pincer installation tool
Primer Bulb Selection
Primer bulb fittings should match the inside diameter of the fuel hose. For 3/8" fuel line, use the Pro Marine 8005 3/8" Primer Bulb.
View Pro Marine 8005 3/8" Primer Bulb
Key Features & Benefits
- 3/8" inside diameter
- Marine Type B fuel hose
- Commonly used for exposed and above-deck installations where Type B hose is appropriate
- Sold by the foot for custom-length installations
- Uses Oetiker 4-185 ear clamp
- Matching Pro Marine 8005 3/8" primer bulb available
- 3/8" Type A alternative available
- Type A and Type B hoses both use the same 4-185 clamp
- Oetiker pincer installation tool available
- Complete Oetiker clamp assortment with tool available
Need Help Choosing the Right Marine Fuel Hose?
Fuel-hose diameter is only one part of choosing the correct line. Installation location, Type A or Type B classification, primer bulb size, fittings and clamp selection should all be considered.
Visit the Pro Marine Fuel Line Technical Center
FAQ
What size is this fuel hose?
This hose has a 3/8" inside diameter.
Is this fuel hose sold by the foot?
Yes. Order the quantity corresponding to the total number of feet needed.
What type of marine fuel hose is this?
This is Type B marine fuel hose.
Which clamp fits this 3/8" Type B hose?
Use the
Oetiker 4-185 ear clamp
.
Which primer bulb fits this hose?
Use the
Pro Marine 8005 3/8" Primer Bulb
.
What if I need 3/8" Type A fuel hose?
Use the
375-1 3/8" Type A Marine Fuel Hose
.
Does the 3/8" Type A hose use the same clamp?
Yes. Both the Type A and Type B 3/8" hoses use the
Oetiker 4-185 ear clamp.
Can I use the same primer bulb with the Type A hose?
Yes. Both hoses have a 3/8" inside diameter, so the
Pro Marine 8005 3/8" primer bulb is the matching size
for either hose.
What tool installs the Oetiker clamps?
Use the
Oetiker Standard Jaw Pincer Tool
.
Do you sell a complete clamp assortment?
Yes. The
Oetiker Clamp Pack with Tool
includes commonly used clamp sizes and the installation tool.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 in the continental U.S.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Parts must be new, unused and in original packaging.
- Installed parts are not returnable.
- Return authorization is required before sending items back.
Need help choosing the correct fuel-line parts?
Contact Pro Marine
Phone: 941-721-3000
Searchable Part Numbers & Terms
375, MPI 375, 3/8 fuel hose, 3/8 marine fuel hose, 3/8 boat fuel line, 3/8 outboard fuel hose, Type B marine fuel hose, Type B fuel line, marine fuel line by the foot, bulk marine fuel hose, above deck fuel hose, Oetiker 4-185, 4-185 fuel hose clamp, 8005, Pro Marine 8005, 3/8 primer bulb, marine primer bulb, outboard primer bulb, 375-1, 3/8 Type A fuel hose, marine fuel hose, outboard fuel line, boat fuel hose
MPI Type A Marine Fuel Hose
MPI 1/4" Type A Marine Fuel Hose - Sold by the Foot
The MPI 314-1 1/4" Type A Marine Fuel Hose is bulk marine fuel line for applications requiring 1/4" inside-diameter hose and the additional fire-resistant protection of Type A marine fuel hose.
Type A hose is commonly selected for enclosed, below-deck and other marine fuel-system installations where Type A hose is required. The hose is sold by the foot, allowing you to order the continuous length needed for your installation.
Pro Marine also stocks the matching Oetiker 4-170 ear clamp, Pro Marine 8002 1/4" primer bulb, Oetiker installation tools and a 1/4" Type B alternative.
Inside Diameter: 1/4"
Manufacturer: MPI Products
Fuel Hose Type: Type A Marine Fuel Hose
Sold: By the Foot
Recommended Clamp: Oetiker 4-170
Recommended Primer Bulb: Pro Marine 8002 - 1/4"
How to Order Bulk Fuel Hose
MPI 314-1 is sold by the foot. Enter the quantity based on the continuous length of fuel hose needed for the installation.
For example, if you need 8 feet of 1/4" Type A hose, order a quantity of 8.
What is Type A Marine Fuel Hose?
Marine fuel hose classifications help identify the hose's intended application, permeation performance and fire resistance.
Type A marine fuel hose meets the applicable marine fuel-hose performance requirements as well as the additional USCG fire-test requirement associated with Type A hose.
This makes Type A hose the appropriate choice for fuel-system installations where the additional fire-resistant classification is required.
Where is Type A Fuel Hose Used?
Type A fuel hose is commonly used in enclosed and below-deck marine fuel-system installations and other locations where the fuel line must meet the Type A fire-resistant classification.
Always select marine fuel hose according to the requirements of the specific fuel-system installation rather than choosing hose based on diameter alone.
For exposed and above-deck applications where Type B marine fuel hose is permitted, Pro Marine stocks the MPI 315-014 1/4" Type B fuel hose.
View MPI 315-014 1/4" Type B Fuel Hose
Complete Your 1/4" Fuel Line Setup
Pro Marine stocks the matching clamp, primer bulb and installation tools needed to build or service a 1/4" marine fuel-line system.
Oetiker 4-170 Ear Clamp - 10 Pack
The matching Oetiker ear clamp for the MPI 314-1 1/4" Type A marine fuel hose.
Clamp: 4-170
View Oetiker 4-170 Clamp
Pro Marine 8002 - 1/4" Primer Bulb
Matching 1/4" primer bulb for compatible outboard fuel-line assemblies using 1/4" fuel hose.
Hose Size: 1/4"
View 1/4" Primer Bulb
Oetiker Standard Jaw Pincer Tool
Installation tool for properly closing Oetiker ear clamps when building or repairing marine fuel lines.
View Oetiker Pincer Tool
Oetiker Clamp Pack with Tool
Assortment of common Oetiker clamp sizes with the installation tool included. Ideal for marine shops and technicians servicing multiple fuel-line sizes.
View Oetiker Clamp Pack1/4" Type B Alternative
MPI 315-014 1/4" Type B Marine Fuel Hose
Type B alternative for exposed and above-deck fuel-line installations where Type B hose is appropriate.
Inside Diameter: 1/4"
Fuel Hose Type: Type B
Matching Clamp: Oetiker 4-133
Primer Bulb: Pro Marine 8002 - 1/4"
1/4" Type A vs. Type B Fuel Hose
| Fuel Hose | Classification | Matching Clamp | Primer Bulb |
|---|---|---|---|
| MPI 314-1 | Type A | Oetiker 4-170 | Pro Marine 8002 - 1/4" |
| MPI 315-014 | Type B | Oetiker 4-133 | Pro Marine 8002 - 1/4" |
Why Do the Type A and Type B Hoses Use Different Clamps?
Both hoses have a 1/4" inside diameter, which allows them to connect to compatible 1/4" fittings and the Pro Marine 8002 1/4" primer bulb.
However, the 1/4" measurement does not indicate the outside diameter of the hose. Different hose constructions and wall thicknesses result in different outside diameters.
The MPI 314-1 Type A hose uses Oetiker 4-170, while the MPI 315-014 Type B hose uses Oetiker 4-133. Always select the clamp for the specific hose rather than selecting it based only on inside diameter.
What This Fuel Hose is Used For
MPI 314-1 is intended for building, repairing or replacing marine fuel lines requiring 1/4" Type A fuel hose.
Selling the hose by the foot makes it suitable for custom-length installations and allows the hose to be paired with the appropriate primer bulb, fittings, connectors and clamps for the specific boat.
Building a 1/4" Type A Fuel Line
Depending on the application, a complete 1/4" fuel-line setup may include:
- MPI 314-1 1/4" Type A marine fuel hose
- Pro Marine 8002 1/4" primer bulb
- Correct tank-side fitting or connection
- Correct engine-side fitting or connector
- Oetiker 4-170 ear clamps
- Oetiker pincer installation tool
Exact component requirements depend on the engine, fuel tank and configuration of the boat's fuel system.
Primer Bulb Selection
Primer bulb fittings should match the inside diameter of the fuel hose. For 1/4" fuel line, use the Pro Marine 8002 1/4" Primer Bulb.
View Pro Marine 8002 1/4" Primer Bulb
Key Features & Benefits
- 1/4" inside diameter
- MPI Products marine fuel hose
- Type A marine fuel-hose construction
- Designed for installations requiring Type A fire resistance
- Common choice for enclosed and below-deck fuel-line routing
- Sold by the foot for custom-length installations
- Matching Oetiker 4-170 clamp available
- Matching Pro Marine 8002 1/4" primer bulb available
- 1/4" Type B alternative available
- Oetiker installation tool available
- Complete Oetiker clamp assortment with tool available
Need Help Choosing the Right Marine Fuel Hose?
Fuel-hose diameter is only one part of choosing the correct line. Installation location, Type A or Type B classification, primer bulb, fittings and the hose's outside diameter for clamp selection should all be considered.
Visit the Pro Marine Fuel Line Technical Center
FAQ
What size is MPI 314-1?
MPI 314-1 has a 1/4" inside diameter.
Is this hose sold by the foot?
Yes. Order the quantity corresponding to the total number of feet required.
What type of marine fuel hose is MPI 314-1?
MPI 314-1 is Type A marine fuel hose.
Where is Type A marine fuel hose commonly used?
Type A hose is commonly selected for enclosed and below-deck installations
and other applications requiring its additional fire-resistant
classification.
Which clamp fits MPI 314-1?
Use the
Oetiker 4-170 ear clamp
.
Which primer bulb fits this hose?
Use the
Pro Marine 8002 1/4" Primer Bulb
.
Can I use the same primer bulb with Type A and Type B 1/4" hose?
Yes. Both hoses have a 1/4" inside diameter, so the
Pro Marine 8002 1/4" primer bulb is the matching size
for either hose.
Do Type A and Type B 1/4" hoses use the same clamp?
No. MPI 314-1 Type A uses Oetiker 4-170, while MPI
315-014 Type B uses Oetiker 4-133. The hoses have the
same inside diameter but different outside diameters.
What if I need 1/4" Type B fuel hose?
Use the
MPI 315-014 1/4" Type B Marine Fuel Hose
for applications where Type B hose is appropriate.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 in the continental U.S.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Parts must be new, unused and in original packaging.
- Installed parts are not returnable.
- Return authorization is required before sending items back.
Need help choosing the correct fuel hose?
Contact Pro Marine
Phone: 941-721-3000
Searchable Part Numbers & Terms
314-1, MPI 314-1, 1/4 Type A fuel hose, 1/4 marine fuel hose, 1/4 boat fuel line, Type A marine fuel hose, below deck fuel hose, enclosed marine fuel line, marine fuel line by the foot, bulk marine fuel hose, outboard fuel line, boat fuel hose, Oetiker 4-170, 4-170 fuel hose clamp, 8002, Pro Marine 8002, 1/4 primer bulb, marine primer bulb, outboard primer bulb, 315-014, 1/4 Type B fuel hose, Oetiker 4-133, MPI marine fuel line
Type A Marine Fuel Hose
3/8" Type A Marine Fuel Hose - Sold by the Foot
The 375-1 3/8" Type A Marine Fuel Hose is bulk marine fuel line for applications requiring 3/8" inside-diameter hose and the additional fire-resistant protection associated with Type A marine fuel hose.
Type A hose is commonly selected for enclosed, below-deck and other marine fuel-system installations where Type A hose is required. The hose is sold by the foot so you can purchase the continuous length needed for your installation.
Pro Marine also stocks the matching Oetiker 4-185 ear clamp, Pro Marine 8005 3/8" primer bulb, Oetiker installation tools and a 3/8" Type B alternative.
Inside Diameter: 3/8"
Fuel Hose Type: Type A Marine Fuel Hose
Sold: By the Foot
Recommended Clamp: Oetiker 4-185
Recommended Primer Bulb: Pro Marine 8005 - 3/8"
How to Order Bulk Fuel Hose
This hose is sold by the foot. Enter the quantity based on the continuous hose length required for your installation.
For example, if your fuel-system layout requires 10 feet of hose, order a quantity of 10.
What is Type A Marine Fuel Hose?
Type A marine fuel hose is designed for installations requiring the additional fire-resistant protection associated with the Type A classification.
It is commonly used in enclosed and below-deck fuel-system routing and in other locations where Type A hose is specified by the boat builder, engine manufacturer or applicable installation requirements.
Fuel hose should always be selected based on both hose diameter and installation type.
For exposed and above-deck applications where Type B marine fuel hose is appropriate, use the 375 3/8" Type B fuel hose.
View 3/8" Type B Marine Fuel Hose
Complete Your 3/8" Fuel Line Setup
Pro Marine stocks the matching clamp, primer bulb and Oetiker installation tools needed to build or service a 3/8" marine fuel-line assembly.
Oetiker 4-185 Ear Clamp - 10 Pack
Matching Oetiker ear clamp for this 3/8" Type A marine fuel hose.
Clamp: 4-185
View Oetiker 4-185 Clamp
Pro Marine 8005 - 3/8" Primer Bulb
Matching 3/8" primer bulb for compatible outboard fuel-line assemblies using 3/8" hose.
Hose Size: 3/8"
View 3/8" Primer Bulb
Oetiker Standard Jaw Pincer Tool
Installation tool for properly closing Oetiker ear clamps on marine fuel-line connections.
View Oetiker Pincer Tool
Oetiker Clamp Pack with Tool
Assortment of commonly used Oetiker clamp sizes with the installation tool included. A convenient option for marine shops and technicians servicing multiple fuel-line sizes.
View Oetiker Clamp Pack3/8" Type B Alternative
3/8" Type B Marine Fuel Hose - 375
Type B alternative for exposed and above-deck fuel-line installations where Type B hose is appropriate.
Inside Diameter: 3/8"
Fuel Hose Type: Type B
Matching Clamp: Oetiker 4-185
Primer Bulb: Pro Marine 8005 - 3/8"
3/8" Type A vs. Type B Fuel Hose
| Fuel Hose | Classification | Matching Clamp | Primer Bulb |
|---|---|---|---|
| 375-1 | Type A | Oetiker 4-185 | Pro Marine 8005 - 3/8" |
| 375 | Type B | Oetiker 4-185 | Pro Marine 8005 - 3/8" |
Same Clamp for Both 3/8" Fuel Hoses
Both the 375-1 Type A and 375 Type B 3/8" fuel hoses use the same Oetiker 4-185 ear clamp.
That makes clamp selection simple when changing between these two 3/8" hose types. The main consideration is the required fuel-hose classification for the installation.
What This Fuel Hose is Used For
The 375-1 3/8" Type A fuel hose is intended for building, repairing or replacing marine fuel lines requiring 3/8" Type A hose.
Selling the hose by the foot makes it suitable for custom-length installations and allows it to be paired with the appropriate primer bulb, fittings, connectors and clamps.
Building a 3/8" Type A Fuel Line
Depending on the application, a complete setup may include:
- 375-1 3/8" Type A marine fuel hose
- Pro Marine 8005 3/8" primer bulb
- Correct tank-side fitting or connector
- Correct engine-side fitting or connector
- Oetiker 4-185 ear clamps
- Oetiker pincer installation tool
Primer Bulb Selection
Primer bulb fittings should match the inside diameter of the fuel hose. For 3/8" fuel line, use the Pro Marine 8005 3/8" Primer Bulb.
View Pro Marine 8005 3/8" Primer Bulb
Key Features & Benefits
- 3/8" inside diameter
- Type A marine fuel-hose construction
- Designed for installations requiring Type A fire-resistant protection
- Commonly used in enclosed and below-deck marine fuel systems
- Sold by the foot for custom-length installations
- Uses Oetiker 4-185 ear clamp
- Matching Pro Marine 8005 3/8" primer bulb available
- 3/8" Type B alternative available
- Type A and Type B 3/8" hoses use the same 4-185 clamp
- Oetiker pincer installation tool available
- Complete Oetiker clamp assortment with tool available
Need Help Choosing the Right Marine Fuel Hose?
Fuel-hose diameter is only one part of choosing the correct line. Installation location, Type A or Type B classification, primer bulb size, fittings and clamp selection should all be considered.
Visit the Pro Marine Fuel Line Technical Center
FAQ
What size is the 375-1 fuel hose?
This hose has a 3/8" inside diameter.
Is this fuel hose sold by the foot?
Yes. Order the quantity corresponding to the number of feet needed.
What type of marine fuel hose is 375-1?
The 375-1 is Type A marine fuel hose.
Where is Type A fuel hose commonly used?
Type A hose is commonly selected for enclosed and below-deck installations
and other fuel-system applications requiring its additional fire-resistant
classification.
Which clamp fits this hose?
Use the
Oetiker 4-185 ear clamp
.
Which primer bulb fits this hose?
Use the
Pro Marine 8005 3/8" Primer Bulb
.
What if I need 3/8" Type B fuel hose?
Use the
375 3/8" Type B Marine Fuel Hose
.
Does the Type B hose use the same clamp?
Yes. Both 3/8" Type A and Type B hoses use the
Oetiker 4-185 ear clamp.
Can I use the same primer bulb on Type A and Type B hose?
Yes. Both hoses use a 3/8" inside diameter, so the
Pro Marine 8005 3/8" primer bulb matches both.
What tool installs the Oetiker clamp?
Use the
Oetiker Standard Jaw Pincer Tool
.
Do you sell a clamp assortment?
Yes. The
Oetiker Clamp Pack with Tool
includes common clamp sizes and the installation tool.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 in the continental U.S.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Parts must be new, unused and in original packaging.
- Installed parts are not returnable.
- Return authorization is required before sending items back.
Need help choosing the correct fuel-line parts?
Contact Pro Marine
Phone: 941-721-3000
Searchable Part Numbers & Terms
375-1, 3/8 Type A fuel hose, 3/8 marine fuel hose, 3/8 boat fuel line, below deck fuel hose, enclosed marine fuel line, Type A marine fuel hose, marine fuel line by the foot, bulk marine fuel hose, outboard fuel line, boat fuel hose, Oetiker 4-185, 4-185 fuel hose clamp, 8005, Pro Marine 8005, 3/8 primer bulb, marine primer bulb, outboard primer bulb, 375, 3/8 Type B fuel hose, marine fuel system, boat fuel line