1/4" Marine Fuel Hose Type A - MPI 314-1 - Sold By the Foot

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.

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 Pack

1/4" 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"

View 1/4" Type B Fuel Hose

1/4" Type A vs. Type B Fuel Hose

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.

Searchable Part Numbers & Terms

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