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1/2" Type A1 Marine Fuel Hose
MPI 360-12 1/2" Type A1 Marine Fuel Hose
The MPI 360-12 1/2" Type A1 Marine Fuel Hose is a heavy-duty bulk fuel line for marine fuel systems requiring a 1/2" inside diameter and the additional fire-resistant protection associated with Type A1 marine fuel hose.
The larger 1/2" inside diameter makes this hose suitable for higher-flow marine fuel-system applications where a larger supply line is required.
Pro Marine stocks the matching German-style hose clamp, installation tools and a complete clamp assortment for marine fuel-system service.
Inside Diameter: 1/2"
Manufacturer: MPI Products
Fuel Hose Type: Type A1
Application: Marine Fuel System
Matching Clamp: German-Style Hose Clamp 4-4
What is Type A1 Marine Fuel Hose?
Type A1 marine fuel hose is designed for fuel-feed applications requiring a marine hose with enhanced fire-resistant performance.
Type A1 hose is commonly used in permanent marine fuel systems and installations where the fuel line passes through enclosed or below-deck areas.
When selecting fuel hose, both the inside diameter and the required hose classification should be verified for the installation.
Why Use 1/2" Fuel Hose?
A 1/2" fuel line provides greater internal flow area than the more common 1/4", 5/16" and 3/8" marine fuel hoses.
It may be used in applications where the engine or fuel-system design requires a larger fuel supply line to support higher fuel-flow demand.
Always follow the engine or boat manufacturer's required hose diameter rather than increasing or decreasing hose size without verifying the fuel-system requirements.
Unlike many smaller outboard fuel-line assemblies, a 1/2" marine fuel-line system would not normally use an inline hand primer bulb.
Larger 1/2" fuel lines are generally associated with higher-flow fuel systems where fuel delivery is handled by the engine's fuel-system configuration rather than a manual primer bulb.
Always follow the fuel-system design specified for the engine and boat.
Matching Fuel Hose Clamp
German-Style Hose Clamp - 4-4
Recommended hose clamp for the MPI 360-12 1/2" Type A1 marine fuel hose.
German-style hose clamps provide a secure connection for larger marine fuel-hose applications.
Fuel Line Tools and Clamp Assortment
Oetiker Standard Jaw Pincer Tool
Useful installation tool for Oetiker ear clamps used throughout many marine fuel-line systems.
While this 1/2" hose uses the German-style clamp shown above, the pincer tool is useful when servicing other fuel-hose sizes that use Oetiker ear clamps.
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 marine shops and technicians servicing different fuel-hose sizes throughout a boat or engine.
View Oetiker Clamp PackWhat This Fuel Hose is Used For
MPI 360-12 is used when building, repairing or replacing a marine fuel supply line requiring 1/2" Type A1 hose.
Typical applications involve larger marine fuel systems where increased fuel-flow capacity is required and the installation calls for Type A1 hose.
Typical 1/2" Fuel-Line Setup
Depending on the boat and engine, a 1/2" marine fuel-line installation may include:
- MPI 360-12 1/2" Type A1 marine fuel hose
- German-style 4-4 hose clamps
- Fuel tank pickup or shutoff valve
- Fuel/water separator or filter assembly
- Engine fuel-system connection
- Application-specific fittings and adapters
Primer Bulb vs. Larger Fuel Systems
Smaller outboard fuel systems commonly use 1/4", 5/16" or 3/8" hose with an inline primer bulb.
A 1/2" fuel supply line generally indicates a higher-flow fuel system, and a hand primer bulb is not normally part of that configuration.
The engine manufacturer's fuel-system requirements should always take priority when determining hose size, fittings, filters and priming components.
Fuel Hose Size Comparison
| Hose ID | Typical Pro Marine Fuel-Line Options | Primer Bulb Available |
|---|---|---|
| 1/4" | Type A / Type B | Yes - Pro Marine 8002 |
| 5/16" | Type A / Type B / Mercury OEM | Yes - Pro Marine 8004 |
| 3/8" | Type A / Type B | Yes - Pro Marine 8005 |
| 1/2" | Type A1 - MPI 360-12 | Normally not used |
Key Features & Benefits
- 1/2" inside diameter
- MPI Products marine fuel hose
- Type A1 marine fuel-hose classification
- Designed for fuel-feed applications requiring Type A1 hose
- Suitable for higher-flow marine fuel systems
- Common choice for enclosed or below-deck fuel-line routing when 1/2" hose is required
- Matching German-style 4-4 hose clamp available
- Primer bulb normally not used with 1/2" fuel-line systems
- Fuel-system installation tools and clamp assortment available
Need Help Choosing the Right Marine Fuel Hose?
Fuel-line diameter, Type A or Type B classification, fuel-system flow requirements, fittings, filters and clamp selection all need to match the boat and engine installation.
Visit the Pro Marine Fuel Line Technical Center
FAQ
What size is MPI 360-12?
This fuel hose has a 1/2" inside diameter.
What type of fuel hose is 360-12?
It is Type A1 marine fuel hose.
What is Type A1 fuel hose used for?
Type A1 is used for marine fuel-feed applications requiring the additional
fire-resistant performance associated with Type A hose.
Can this hose be used below deck?
Type A1 hose is commonly used in enclosed and below-deck fuel-system
installations when the fuel system calls for this hose size and classification.
Which clamp fits this 1/2" hose?
Use the
German-Style 4-4 Hose Clamp
.
Does this hose use an Oetiker ear clamp?
The recommended clamp for this hose is the
German-style 4-4 hose clamp.
Does 1/2" fuel hose use a primer bulb?
A primer bulb is not normally used in a fuel system
requiring 1/2" hose. Larger lines are typically used in higher-flow fuel
systems with a different priming and fuel-delivery arrangement.
Should I use 1/2" hose just to increase fuel flow?
Use the hose diameter specified for the engine and fuel system. Increasing
hose size without verifying the complete system is not a substitute for
following the manufacturer's fuel-system requirements.
Do you sell fuel-line clamp tools?
Yes. Pro Marine stocks the
Oetiker Standard Jaw Pincer Tool
for fuel-line applications using Oetiker ear clamps.
Do you sell a complete clamp assortment?
Yes. The
Oetiker Clamp Pack with Tool
includes commonly used clamp sizes and an 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
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Marine Fuel Tank Fill Hose
1-1/2" Type A2 Marine Fuel Fill Hose - FILLHOSE-112
FILLHOSE-112 is a 1-1/2" marine Type A2 fuel fill hose designed for the large-diameter fuel connection between the boat's deck-mounted gas fill and fuel tank.
Fuel fill hose is different from the smaller fuel-supply hose that carries gasoline from the tank to the engine. Its job is to safely route fuel from the deck fill fitting into the tank while providing the larger diameter needed during refueling.
Pro Marine also stocks the matching 4-8 German-style stainless-steel hose clamp, a 1-1/2" chrome gas deck fill, and a larger 2" Type A2 fuel fill hose.
Inside Diameter: 1-1/2"
Hose Type: USCG Type A2
Application: Marine Fuel Fill Line
Connects: Deck Fuel Fill to Fuel Tank
Matching Clamp: 4-8
What This Fuel Fill Hose is Used For
FILLHOSE-112 is intended for the fuel-fill portion of a permanently installed marine fuel system.
In a typical installation, the hose runs from the fitting directly behind the deck-mounted fuel cap down to the fuel tank's fill-neck connection.
Common applications include:
- Boat fuel tank fill hose
- Deck fill to fuel tank connection
- Replacement of aged or deteriorated marine fuel fill hose
- Boat restoration and fuel-system rerigging
- New permanent marine fuel tank installations
What Does USCG Type A2 Mean?
Type A2 is a marine fuel-hose classification used for compatible fuel-system applications including fuel fill and vent lines.
Under federal marine fuel-system requirements, Type A hose is constructed to meet a fire-resistance test. Type A2 is a Class 2 hose designation.
The important application distinction for this product is that Type A2 hose is suitable for a marine fuel fill or vent line. It should not be confused with the smaller Type A1 fuel hose commonly used in fuel-feed applications.
This 1-1/2" hose is intended for the deck fill to fuel tank connection.
Do not select fuel hose only by diameter. Fuel fill, vent and tank-to-engine fuel lines have different applications and hose requirements.
Matching 1-1/2" Fuel Fill Hose Clamp
Matching clamp for the 1-1/2" fuel fill hose installation.
Pro Marine's 4-8 German-style clamp has a 27-51mm / 1.05-1.99" clamping range and is made from 316 stainless steel.
Secure the hose at the deck-fill fitting and fuel-tank fill neck according to the requirements of the installation.
View 4-8 German-Style Hose Clamp1-1/2" Chrome Gas Deck Fill
Universal 1-1/2" chrome gas deck fill for compatible marine fuel systems.
The fuel fill hose connects to the hose barb beneath the deck fill and routes gasoline down to the permanent fuel tank.
View 1-1/2" Chrome Gas Deck Fill1-1/2" and 2" Fuel Fill Hose Options
| Size | Fuel Fill Hose | Type | Matching Clamp |
|---|---|---|---|
| 1-1/2" | FILLHOSE-112 | USCG Type A2 | 4-8 |
| 2" | FILLHOSE-2 | USCG Type A2 | 4-9 |
Need 2" Fuel Fill Hose?
2" Type A2 Fuel Fill Hose - FILLHOSE-2
Larger Type A2 fuel fill hose for marine installations using a 2" tank fill and deck-fill connection.
View 2" Fuel Fill Hose
German-Style Hose Clamp - 4-9
Matching clamp option supplied for Pro Marine's 2" Type A2 fuel fill hose.
View 4-9 Hose ClampFuel Fill Hose Installation Tips
- Match the hose inside diameter to the deck fill and fuel-tank fill connection.
- Use marine fuel hose specifically designed for fuel-fill applications.
- Use properly sized corrosion-resistant hose clamps.
- Make sure the hose is fully seated on each fitting before clamping.
- Avoid sharp bends that can restrict fuel flow while filling the tank.
- Route the hose so it cannot be crushed by batteries, storage or other equipment.
- Keep the hose away from sharp edges and moving components.
- Inspect the entire fill hose for cracking, hardening and deterioration.
- Check all connections for fuel seepage after installation.
Fuel fill hose is large and heavily constructed. Plan the routing before cutting the hose.
A smooth path from the deck fill to the tank helps fuel flow freely during refueling and reduces the chance of creating a low spot, restriction or kink.
When Should Marine Fuel Fill Hose Be Replaced?
Fuel fill hose should be inspected whenever the fuel tank, deck fill or surrounding rigging is serviced.
Consider replacement if you find:
- Cracking in the outer hose
- Dry, hardened or brittle hose
- Soft or swollen areas
- Abrasion or chafing
- Fuel odor around the fill-hose area
- Visible fuel seepage
- Damaged or heavily corroded clamps
- Hose that no longer fits securely on the fill fitting or tank
How the Marine Fuel Fill System Works
When gasoline is added through the deck-mounted gas cap, it travels through the large-diameter fuel fill hose and into the permanent fuel tank.
A separate fuel-tank vent system allows displaced air to escape while the tank is being filled.
The fuel fill hose, deck fill, tank connection and vent system all need to remain correctly routed and unobstructed for reliable refueling.
Key Features and Benefits
- 1-1/2" marine fuel fill hose
- USCG Type A2 hose
- Designed for deck-fill to fuel-tank applications
- Large diameter for marine fuel filling
- Matching 4-8 German-style clamp available
- Matching 1-1/2" chrome deck fill available
- 2" Type A2 fuel fill hose also available
- Useful for new fuel-system installations and replacement projects
FAQ
What size is FILLHOSE-112?
FILLHOSE-112 is 1-1/2" inside-diameter marine fuel fill hose.
What is this hose used for?
It connects the boat's deck-mounted fuel fill to the fill connection on
the permanent marine fuel tank.
Is FILLHOSE-112 Type A2?
Yes. This hose is listed as USCG Type A2.
Can I use this as the fuel hose from the tank to the engine?
This product is intended as large-diameter fuel fill hose. Use the proper
marine fuel-supply hose specified for the tank-to-engine portion of the
fuel system.
Which clamp fits the 1-1/2" fuel fill hose?
Pro Marine pairs it with the
4-8 German-Style Hose Clamp
.
Do you stock a 1-1/2" fuel deck fill?
Yes. Pro Marine stocks the
3-5740 Chrome 1-1/2" Gas Deck Fill
.
Do you have 2" fuel fill hose?
Yes. Pro Marine also stocks
FILLHOSE-2 2" Type A2 Fuel Fill Hose
.
How do I know whether I need 1-1/2" or 2" hose?
Measure or verify the hose connection size on both the deck fill and the
fuel tank. The replacement hose needs to match the fittings used in the
boat's fuel-fill system.
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
FILLHOSE-112, 1-1/2 fuel fill hose, 1.5 inch fuel fill hose, Type A2 fuel hose, USCG Type A2 hose, marine fuel fill hose, boat gas fill hose, fuel tank fill hose, deck fill hose, gas tank filler hose, 4-8 hose clamp, 3-5740, FILLHOSE-2, marine fuel tank hose
Marine Fuel Tank Fill Hose
2" Type A2 Marine Fuel Fill Hose - FILLHOSE-2
FILLHOSE-2 is a 2" marine Type A2 fuel fill hose designed for the large-diameter fuel connection between a boat's deck-mounted fuel fill and permanent fuel tank.
This hose is used during refueling to carry gasoline from the deck fill down to the tank. It is different from the smaller fuel-supply hose that carries fuel from the tank to the engine.
Pro Marine also stocks the matching 4-9 German-style hose clamp and a smaller 1-1/2" Type A2 fuel fill hose for installations using 1-1/2" fittings.
Inside Diameter: 2"
Hose Type: USCG Type A2
Application: Marine Fuel Fill Line
Connects: Deck Fuel Fill to Fuel Tank
Matching Clamp: 4-9
What This Fuel Fill Hose is Used For
FILLHOSE-2 is intended for the fuel-fill section of a permanently installed marine fuel system.
In a typical installation, the hose connects the fitting underneath the deck-mounted gas fill to the fill neck on the fuel tank.
Common applications include:
- Boat fuel tank fill hose
- Deck fill to fuel tank plumbing
- Replacement of old or deteriorated fuel fill hose
- Boat restoration and fuel-system rerigging
- New permanent marine fuel-tank installations
What Does Type A2 Fuel Hose Mean?
Type A2 is a marine fuel-hose classification commonly used for fuel fill and vent applications.
The Type A designation indicates a hose intended for marine fuel systems where fire resistance is required. The A2 classification is used for specific fill and vent applications rather than the smaller engine fuel-feed line.
For this product, the important point is that it is designed as a large-diameter marine fuel fill hose.
This 2" hose is intended for the deck fill to fuel tank connection.
Do not use hose diameter alone to choose a marine fuel hose. Fuel fill, vent and engine supply lines have different applications and requirements.
Matching 2" Fuel Fill Hose Clamp
Matching clamp for Pro Marine's 2" Type A2 fuel fill hose.
Use properly sized corrosion-resistant clamps to secure the fuel fill hose at the deck-fill fitting and fuel-tank connection.
View 4-9 German-Style Hose Clamp1-1/2" and 2" Fuel Fill Hose Options
| Size | Fuel Fill Hose | Type | Matching Clamp |
|---|---|---|---|
| 1-1/2" | FILLHOSE-112 | Type A2 | 4-8 |
| 2" | FILLHOSE-2 | Type A2 | 4-9 |
Need 1-1/2" Fuel Fill Hose Instead?
1-1/2" Type A2 Fuel Fill Hose - FILLHOSE-112
Smaller Type A2 marine fuel fill hose for installations using 1-1/2" deck-fill and fuel-tank connections.
View 1-1/2" Fuel Fill Hose
German-Style Hose Clamp - 4-8
Matching clamp for the 1-1/2" Type A2 fuel fill hose.
View 4-8 Hose Clamp1-1/2" Chrome Gas Deck Fill
Pro Marine also stocks a 1-1/2" chrome deck fill for compatible marine fuel systems using 1-1/2" fill hose.
This deck fill is not the matching 2" connection for FILLHOSE-2, but it is available for installations using the smaller 1-1/2" hose system.
View 1-1/2" Chrome Gas Deck FillHow a Marine Fuel Fill System Works
The fuel-fill system provides the path from the deck-mounted fuel cap to the boat's permanent fuel tank.
During refueling:
- Fuel enters through the deck fill.
- The fuel travels through the large-diameter fill hose.
- The hose delivers the fuel to the tank's fill connection.
- The tank's separate vent system allows displaced air to escape.
The deck fill, fuel fill hose, tank connection and vent system all need to be correctly sized and routed for reliable filling.
Fuel Fill Hose Installation Tips
- Verify the deck-fill and tank-fill connection size before ordering hose.
- Use hose specifically rated for marine fuel-fill service.
- Make sure the hose fully seats over each hose barb or fitting.
- Use properly sized corrosion-resistant clamps.
- Avoid tight bends and kinks that can restrict fuel flow.
- Plan the routing before cutting the hose.
- Keep the hose away from sharp edges and moving parts.
- Do not allow batteries or stored equipment to crush the hose.
- Check both ends for leaks or seepage after installation.
A 2" fuel fill hose requires compatible 2" fittings.
If the deck fill or fuel-tank fill neck is 1-1/2", use the corresponding 1-1/2" hose instead of trying to force or adapt the wrong hose size.
Why Fuel Fill Hose is So Heavy Duty
Fuel fill hose is much larger and more heavily constructed than the smaller fuel hose used to feed an engine.
It has to handle:
- Large volumes of fuel during refueling
- Marine vibration and movement
- Fuel exposure
- Heat and environmental exposure
- The bends required between the deck fill and fuel tank
Because of its construction, fuel fill hose can be relatively stiff. Planning the routing before installation is especially important.
When Should Fuel Fill Hose Be Replaced?
Inspect the fill hose whenever the deck fill, fuel tank or surrounding rigging is serviced.
Replace the hose if you find:
- Cracks in the outer surface
- Hard, dry or brittle rubber
- Soft or swollen areas
- Abrasion or chafe damage
- Fuel seepage
- Persistent gasoline odor near the hose
- Loose, damaged or corroded clamps
- A hose that no longer fits tightly on the fittings
Key Features and Benefits
- 2" marine fuel fill hose
- Type A2 construction
- Designed for deck-fill to fuel-tank plumbing
- Large-diameter marine fuel-system application
- Matching 4-9 German-style clamp available
- 1-1/2" Type A2 fuel fill hose also available
- Suitable for replacement and new fuel-system installations
- Helps provide a dedicated path from the deck fill to the fuel tank
FAQ
What size is FILLHOSE-2?
FILLHOSE-2 is 2" inside-diameter marine fuel fill hose.
What is FILLHOSE-2 used for?
It is used to connect a compatible deck-mounted fuel fill to the fill
connection on a permanent marine fuel tank.
Is this a Type A2 hose?
Yes. FILLHOSE-2 is a Type A2 marine fuel fill hose.
Can I use this as the fuel-supply line to the engine?
This product is intended as large-diameter fuel fill hose. Use the correct
marine fuel-supply hose for the tank-to-engine fuel line.
Which clamp fits this hose?
Pro Marine pairs FILLHOSE-2 with the
4-9 German-Style Hose Clamp
.
Do you have a smaller fuel fill hose?
Yes. Pro Marine also stocks
FILLHOSE-112 1-1/2" Type A2 Fuel Fill Hose
.
How do I know whether I need 1-1/2" or 2" hose?
Verify the hose-barb diameter on both the deck fill and the fuel tank.
The hose size needs to match the fittings used in the boat.
Why is fuel fill hose so stiff?
Marine fuel fill hose is heavily constructed for its application, which
makes it less flexible than smaller engine fuel hose. Plan bends and hose
routing before installation.
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
FILLHOSE-2, 2 inch fuel fill hose, Type A2 fuel hose, marine fuel fill hose, boat gas fill hose, deck fill hose, fuel tank fill hose, marine gas tank hose, rigid fuel fill hose, 4-9 hose clamp, FILLHOSE-112, 1-1/2 fuel fill hose, boat fuel hose, marine fuel tank plumbing
3Y9022340
3Y9022340M
52444
52456
52456A1
55501
55501A1
57250
57250A1
60494
60494A1
60494A4
60494A5
604941
802893
802893A4
802893Q
802893Q01
802893Q4
802893T
805269
805269A4
8052691
806771
807172
807172A4
9-37800
9999937801
9999937851
9999937851M
0768651
0777713
0987141
0987228
0987754
18-7789
18-7989
3851218
3852413
3862228
5009676
5009676
5011090
5012363
502906
768651
777713
8M0154770
8M0154772
987141
987228
987754
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.
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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
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