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Tohatsu & Nissan Outboard Parts
Shop OEM and aftermarket Tohatsu and Nissan outboard parts for maintenance, repair, troubleshooting, and complete engine service projects. Browse marine parts by system, including cooling, fuel delivery, electrical, internal engine components, lower unit parts, steering, trim, and routine service items.
Pro Marine USA carries Tohatsu and Nissan outboard engine parts for a wide range of 2-stroke, Four Stroke, EFI, and TLDI applications. Use your engine horsepower, model number, serial number, or OEM part number whenever possible to confirm fitment before ordering.
Shop Tohatsu & Nissan Outboard Parts by System
- Control Cables & Boxes
- Cooling System
- Electrical System
- Engine Oil
- Fuel & Carburetion System
- Intake System
- Internal Engine Components
- Lower Unit Components
- Oiling System
- Paints
- Service Manuals
- Steering Systems
- Transom & Midsection
- Trim System
Find the Correct Tohatsu or Nissan Outboard Part
Tohatsu and Nissan outboard parts can vary by horsepower, model number, engine family, and production range. If you are unsure which component fits your engine, use the OEM parts lookup to identify the original part number from a factory parts diagram.
Once you have the OEM part number, search Pro Marine to find available OEM and aftermarket replacement options.
Use Our OEM Parts Lookup »Common Tohatsu & Nissan Outboard Engine Families
Pro Marine supports many Tohatsu and Nissan outboards across a wide horsepower range. Always confirm the exact engine model and serial information before ordering parts.
- Portable and Small Outboards: common 2.5HP through 30HP 2-stroke and Four Stroke applications
- Midrange: 35HP through 70HP applications across multiple engine families
- Three-Cylinder Platforms: common 75HP through 90HP applications
- High-Horsepower: 115HP through 140HP applications
- EFI: electronically fuel-injected Tohatsu platforms
- TLDI: Tohatsu direct-injection 2-stroke engine families
Common Tohatsu & Nissan Repair Areas
- Engine overheating: inspect the water pump, impeller, thermostat, cooling passages, pressure-control components, and engine anodes.
- Hard starting or rough running: inspect fuel pumps, carburetors or injectors, filters, spark plugs, ignition components, and intake sealing.
- No spark or electrical problems: inspect ignition coils, stators, CDI components, rectifiers, sensors, wiring, and grounds.
- Low compression or power loss: inspect pistons, rings, cylinders, bearings, gaskets, reeds, and other internal engine components.
- Lower unit noise or water intrusion: inspect prop shaft seals, driveshaft seals, shift shaft seals, bearings, gears, and gear lube condition.
- Trim or steering problems: inspect trim motors, hydraulic components, steering systems, hoses, seals, and related rigging parts.
Why Buy Tohatsu & Nissan Outboard Parts from Pro Marine USA?
- OEM and aftermarket replacement options for many Tohatsu and Nissan outboard applications.
- Parts for routine maintenance, professional repair, lower units, fuel systems, electrical systems, steering, trim, and internal engine work.
- OEM diagram and part-number lookup tools to help identify the correct component before ordering.
- Dealer pricing available for qualified marine repair businesses and dealers.
- Large selection of cooling, fuel, electrical, lower unit, and service components.
- Fast weekday shipping on qualifying in-stock orders.
Frequently Asked Questions
How do I find the correct Tohatsu or Nissan outboard part?
Start with the engine horsepower, model number, serial number, and production information whenever available. Use the OEM parts lookup to identify the original part number from a factory diagram.
Can I search Tohatsu and Nissan parts by OEM part number?
Yes. Enter the OEM part number into the Pro Marine site search to locate available OEM and aftermarket replacement options. If you do not know the part number, use the OEM parts lookup first.
Do Tohatsu and Nissan outboard parts interchange?
Some Tohatsu and Nissan outboard applications share related engine platforms and components, but fitment should never be assumed. Confirm the model, production range, and OEM part number before ordering.
Do you carry parts for Tohatsu TLDI engines?
Yes. Pro Marine carries parts for many Tohatsu TLDI applications, including cooling, fuel, electrical, internal engine, lower unit, steering, and trim components.
Do you carry parts for older Nissan outboards?
Yes. Pro Marine carries replacement parts for many older Nissan outboard applications. Availability varies by engine family and component.
What Tohatsu and Nissan parts are commonly replaced during routine maintenance?
Common maintenance items include engine oil, oil filters where applicable, fuel filters, spark plugs, water pump kits, impellers, thermostats, gear lube, drain plug seals, anodes, and model-specific service components.
Fitment Tip: Tohatsu and Nissan outboard parts can vary by model, horsepower, engine family, and production range. Confirm the OEM part number or complete engine identification information whenever possible before ordering.
888988001
0769072
346152
769072
855228
888988014
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
8M0214911
888988015
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
