iFJF Fuel Line Kit 5/16in 10ft with Primer Bulb — Yamaha-Compatible, Built-In Check Valve

The iFJF 32-858104K08 fuel line kit is a 5/16-inch, 10-foot outboard fuel hose with an integrated primer bulb and check valve designed for Yamaha-compatible external fuel setups on many small to mid-size outboards.

This kit provides a ready-to-install replacement fuel hose and primer bulb intended for older-model external fuel systems on outboard engines. Built from resilient rubber with U/V, ozone, and alcohol-resistant formulation, the hose and bulb are sized and cross-referenced to fit numerous Yamaha, Mercury, Johnson, and OMC models that accept external fuel tanks. The assembly includes factory-style flow direction arrows on the bulb for correct hookup and a built-in check valve to keep fuel primed to the engine.

Will this fuel line fit my Yamaha or Mercury outboard?

This line is compatible with many outboard engines that accept an external fuel tank, notably Yamaha models from the late 1980s through the 1990s and a range of Mercury, Johnson, and OMC motors. Check your engine’s external fuel fittings and whether your model supports an external tank—some newer larger engines (typically 60 hp and above) may not.

• Size: 5/16-inch inner diameter hose, 10 feet long.
• Common cross-references: 32-858104K08, 6Y1-24306-00, 6YL-24306-53, and related numbers.
• Compatible: Yamaha 1988–1998, Mercury 1990–200?, Johnson & OMC 4–200 hp families.
• Not suitable for many newer 60+ hp engines without external tank fittings.

How does the primer bulb and check valve work during installation?

The kit’s primer bulb contains a one-way check valve that helps pull fuel from an external tank into the fuel line and prevents backflow when the bulb is released. Arrows molded into the bulb indicate fuel direction, making correct orientation straightforward during installation.

• Bulb has direction arrows to guide hose routing and connection.
• Built-in check valve maintains prime and reduces air entry.
• Rubber construction stays flexible across typical temperature ranges.

What materials and durability features does the hose offer?

The fuel hose and bulb are made primarily from a durable rubber compound formulated for marine fuel use. It resists degradation from U/V exposure, ozone, and alcohol-blended fuels, while remaining flexible to avoid kinks and collapse in normal operating conditions.

• Rubber construction resists U/V and ozone damage.
• Designed for alcohol-enhanced fuels commonly used today.
• Do not store in extreme heat or harsh environments to preserve life span.

What should I know about installation and care?

Installation is straightforward for anyone familiar with external fuel tank plumbing—route the 10-ft hose, orient the bulb following the arrows, and secure hose clamps at each connection. Routine checks for soft spots, cracking, or hardening will keep the fuel line reliable; replace the assembly if signs of wear appear.

• Use appropriate hose clamps and ensure tight, leak-free connections.
• Inspect periodically for cracks, hardening, or collapse, especially after storage.
• Avoid leaving the hose in direct high heat to prevent rubber degradation.

Who is this for: The iFJF 32-858104K08 fuel line kit is aimed at boat owners, mechanics, and DIY enthusiasts who maintain older or classic outboard engines that use external fuel tanks. It suits anyone needing a drop-in replacement primer bulb and 5/16" fuel hose for Yamaha, Mercury, Johnson, or OMC engines within the compatible model years and horsepower ranges. If your engine supports an external tank and you want a resilient, cross-referenced replacement hose and bulb, this kit is made for that purpose.