In-line Fuel Filter – Fits Mercury/Mariner 4-Stroke Outboards 4–15 HP (Replaces 35-80365M)

In-line Fuel Filter – Fits Mercury/Mariner 4-Stroke Outboards 4–15 HP (Replaces 35-80365M)

This in-line fuel filter is designed for a wide range of Mercury/Mariner 4-Stroke outboards from 4 to 15 HP (1995–2005) and select Yamaha outboards from 6 to 9.9 HP (1989–2002). It ensures a clean fuel supply, protecting your engine from contaminants and maintaining optimal performance.

This component is a direct replacement for multiple OEM part numbers, including Mercury 35-80365M / 80365, Yamaha 646-24251-02-00 / 646-24251-01-00, and Sierra 18-7713. It is designed to meet or exceed OEM specifications for fit, form, and function.

• Installation Method: Installs externally in the main fuel line.
• Connection Type: Features a standard 1/4" hose barb inlet and outlet for secure fitting.
• Fuel Compatibility: Designed for use with gasoline fuel systems.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below. For Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

For Yamaha owners, here’s a guide to help you identify your engine’s serial/model: Yamaha Serial Number Guide. You can also review exploded diagrams to verify part numbers: Yamaha Parts Diagrams & Catalog.

Mercury/Mariner

Yamaha

Technical Specifications

Package Contents

• 1 x Inline Fuel Filter (35-80365M)

Installation Guide

1. Safety First: Shut off the fuel supply. Have a fire extinguisher nearby and place a container under the work area to catch any spilled fuel.
2. Locate Filter: Find the old fuel filter in the fuel line between the fuel tank and the engine.
3. Remove Old Filter: Loosen the clamps on both ends of the filter. Carefully twist and pull the fuel hoses off the old filter.
4. Check Fuel Flow: Note the direction of the arrow on the old and new filters. The arrow must point in the direction of fuel flow (towards the engine).
5. Install New Filter: Attach the fuel hoses to the correct ends of the new filter.
6. Secure Hoses: Slide the clamps back into position and tighten them securely on both ends. Ensure there is a tight seal.
7. Final Check: Turn the fuel supply back on. Prime the engine if necessary and carefully inspect the filter and connections for any leaks before starting the engine.

Troubleshooting & FAQ

Q: How do I confirm this filter fits my engine?
A: The best way to verify fitment is to check your original part number against the numbers in our "Part Number Cross-Reference" list. You can also compare your engine's model and year to the "Compatible Engine Models" tables on this page.

Q: What are the signs of a clogged or failing fuel filter?
A: Common symptoms include engine sputtering, loss of power, difficulty starting, or stalling, especially under load. A visual inspection may also reveal debris in the filter housing.

Q: How often should I replace my outboard's fuel filter?
A: As a general rule, we recommend replacing the fuel filter annually or every 100 hours of operation, whichever comes first. Always consult your engine’s service manual for the most accurate maintenance intervals.

Q: OEM vs. Aftermarket?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.