Tygon 5/16" Fuel Hose 10ft - PWC and Outboard 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

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 Hose

Fuel 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 Pack

Choosing 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.

Searchable Part Numbers and Terms

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