Inline Fuel Filter – Fits Yamaha 2-Stroke 115–250 HP and Mercury/Mariner 4-Stroke 9.9–15 HP

Product Details

This Inline Fuel Filter is an aftermarket replacement for selected Yamaha 2-stroke outboard fuel systems and Mercury/Mariner 4-stroke outboards. It helps remove fuel-system contaminants before they reach sensitive engine components.

The filter is listed for Yamaha 115–250 HP 2-stroke outboards in the applications shown below, including V4 and V6 models. It is also associated with Mercury/Mariner 9.9–15 HP 4-stroke applications where the original filter reference matches 35-80365M.

• Inline fuel-filter design for gasoline outboard fuel systems.
• Aftermarket replacement for the listed manufacturer references.
• Confirm the original part number, engine model, stroke and serial-number range before installation.

Part Number Matrix

Use the following references to compare the filter with your existing part. These numbers identify replacement or cross-reference applications; they do not make every engine application interchangeable.

Engine & Model Compatibility

Fitment is determined by the engine family, horsepower, stroke, year range and—where applicable—the serial-number range. Match all applicable conditions with your engine before ordering.

Yamaha 2-Stroke Outboards

Mercury/Mariner 4-Stroke Outboards

Mercury catalog records also associate reference 35-80365M with specific 8, 9.9 and 15 HP 4-stroke engine diagrams and serial-number ranges. For those engines, verify the complete model and serial information against the original filter before installation.

Technical Specs

Product Type

Inline fuel filter

Application

Outboard gasoline fuel systems

Replacement Type

Aftermarket replacement

Supported Stroke Types

Yamaha 2-stroke and selected Mercury/Mariner 4-stroke applications as listed

Connection

Confirm hose and fitting dimensions against the original filter before installation

What’s in the Box

• 1 × Inline fuel filter

Installation Notes

1. Turn the engine off, allow it to cool and work in a well-ventilated area away from ignition sources.
2. Relieve fuel-system pressure if applicable and place an absorbent rag beneath the filter.
3. Before removal, note the fuel-flow direction and the hose arrangement.
4. Loosen the hose clamps and carefully remove the old filter. Use appropriate fuel-system clamps and do not damage the hoses.
5. Install the replacement filter in the same position, with the flow direction pointing toward the engine.
6. Secure both hoses and verify that the connections are fully seated.
7. Prime the fuel system according to the engine manufacturer’s procedure.
8. Start the engine and inspect the filter and connections for fuel leaks before operating the boat.

Troubleshooting & FAQ

Safety & Important Info

• Compare the replacement filter with your original part before purchase and installation.
• Do not rely on horsepower alone; match stroke type, model, year, serial conditions and the original reference.
• Do not install a filter with different hose connections or flow direction unless the application is specifically confirmed.
• This is an aftermarket replacement, not an OEM component.
• Always inspect for fuel leaks before operating the engine.

About Sea Sierra

• Marine Replacement Parts — Parts selected for common outboard maintenance and repair applications.
• Application-Focused Listings — Product references and fitment conditions are provided to help you compare the replacement with your original component.
• Support When Needed — Contact support with your engine model, serial information and original part reference if you need help confirming an application.