5/16-Inch 6.5-Ft Fuel Line with Primer Bulb for Yamaha Outboards, 4–350 HP – Replaces 6Y1-24306-55
5/16-Inch 6.5-Ft Fuel Line with Primer Bulb for Yamaha Outboards, 4–350 HP – Replaces 6Y1-24306-55 is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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5/16-Inch 6.5-Ft Fuel Line with Primer Bulb for Yamaha Outboards, 4...
5/16-Inch 6.5-Ft Fuel Line with Primer Bulb for Yamaha Outboards, 4–350 HP – Replaces 6Y1-24306-55 is backordered and will ship as soon as it is back in stock.
Product Details
This 5/16-inch, 6.5-foot fuel line assembly with primer bulb is intended for Yamaha outboard applications that use a 5/16-inch (8 mm) fuel-line connection. It is suitable for a broad range of Yamaha outboard engines from 4 HP to 350 HP, including applicable 2-stroke and 4-stroke models. Always verify the connection style and diameter on your engine and fuel tank before ordering.
This aftermarket assembly is listed as a replacement for Yamaha part number 6Y1-24306-55 and is also associated with JLM Marine reference 5/16-IN-6.5FT-FL.
- Installation: Portable fuel line connecting the tank to the engine.
- Fuel compatibility: Designed for gasoline and ethanol-blended fuels.
- Flow indicator: Directional arrow shows the correct flow from the tank toward the engine.
Part Number Matrix
Use this matrix to compare the listed OEM and aftermarket references with the number on your existing fuel line.
| Brand | Part Number |
|---|---|
| Yamaha | 6Y1-24306-55 |
| JLM Marine | 5/16-IN-6.5FT-FL |
Engine & Model Compatibility
The following application ranges are provided as general guidance. Confirm the fuel-line diameter, fitting style, and tank and engine connections before purchase.
| Brand | Model Range | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | Portable Outboards | 4–25 | 2- and 4-Stroke | Applications using a 5/16-inch fuel connection | 6Y1-24306-55 | For engines and tanks using compatible 8 mm connections |
| Yamaha | Mid-Range Outboards | 30–90 | 2- and 4-Stroke | Applications using a 5/16-inch fuel connection | 6Y1-24306-55 | For engines and tanks using compatible 8 mm connections |
| Yamaha | High-Power Outboards | 115–350 | 2- and 4-Stroke | Applications using a 5/16-inch fuel connection | 6Y1-24306-55 | Verify the required fitting and connection arrangement before installation |
Technical Specs
- Product Type
- Marine fuel line assembly with primer bulb
- Installation
- Portable connection between the fuel tank and engine
- Fuel Type
- Gasoline and ethanol-blended fuels
- Connection
- Quick-connect fittings
- Housing Material
- Low-permeation rubber material
- Housing Color
- Black
- Dimensions
- 6.5 ft (198 cm) length; 5/16 inch (8 mm) internal diameter
- Flow Direction
- Marked with a directional arrow
- Fitting Type
- Snap-on connectors for the tank and engine ends
- Other Technical Attributes
- Primer bulb with directional-flow indicator
What’s in the Box
- 1 x Fuel line assembly with primer bulb
- 2 x Snap-on connectors
Installation Notes
- Turn the engine off and work in a well-ventilated area away from ignition sources.
- Disconnect the existing fuel line from both the engine and fuel tank.
- Attach the engine-side connector to the motor’s fuel inlet and confirm that it is securely seated.
- Attach the tank-side connector to the fuel tank outlet.
- Check that the arrow on the primer bulb points from the tank toward the engine.
- Squeeze the primer bulb repeatedly until it becomes firm and the line is filled with fuel.
- Inspect both connection points for leaks before starting or operating the engine.
Troubleshooting & FAQ
How do I confirm this fuel line fits my Yamaha engine?
Verify that your engine and fuel tank use a 5/16-inch (8 mm) fuel-line connection and compatible quick-connect fittings. The listed horsepower range is general guidance rather than confirmation for every model, year, or serial-number range.
Is this fuel line compatible with ethanol-blended fuels?
Yes. The line is described for use with gasoline and ethanol-blended fuels. Inspect the hose and fittings regularly and replace the assembly if it becomes cracked, brittle, swollen, or otherwise damaged.
What are the signs that my fuel line needs replacement?
Common signs include visible cracks or brittleness, a fuel smell near the engine, a primer bulb that will not become firm, fuel leakage, or engine sputtering and stalling caused by fuel starvation.
How do I use the primer bulb correctly?
Position the bulb so the directional arrow points toward the engine. Squeeze and release it until it becomes firm. This helps draw fuel from the tank toward the engine before starting.
Is this OEM or aftermarket?
This listing is for an aftermarket replacement assembly, not an OEM Yamaha component. It is listed as a replacement for Yamaha reference 6Y1-24306-55.
What are the shipping and delivery terms?
Typical international transit is 5–15 days. Standard shipping is generally free, and expedited options may be shown at checkout where available.
What are the warranty and return terms?
The product is covered by a 1-year warranty against manufacturing defects under normal use. Returns are accepted within the applicable standard return window when the item is unused and in its original condition. Contact support for order-specific instructions.
Safety & Important Information
- Compare the fittings, connection size, and routing with your original fuel line before purchase.
- Do not use the assembly if any fitting is loose, damaged, or incompatible with the engine or tank.
- After installation, check carefully for fuel leaks before operating the engine.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended when you are uncertain about fuel-system service.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered for dependable use in real-world conditions.
- Fast Global Fulfillment — Free standard delivery is available to most regions, typically within 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials and quality control.
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