Water Separating Fuel Filter Disc – Fits Mercury/MerCruiser Gen III Fuel Systems (Replaces 35-892665, 8M0204703)

Water Separating Fuel Filter Disc – Fits Mercury/MerCruiser Gen III Fuel Systems (Replaces 35-892665, 8M0204703)

This water separating fuel filter disc is designed for 2004 and newer Mercury/MerCruiser sterndrive and inboard engines equipped with the Gen III fuel cooler system. It serves as a direct-fit replacement element to protect your engine from water and contaminants in the fuel supply.

It is a direct replacement for Mercury/Quicksilver part numbers 35-892665 and 8M0204703, and Sierra part number 18-7715.

• Application: Designed for installation in Gen III Fuel Cooler Systems.
• Fuel Compatibility: For use with gasoline engines.
• Primary Function: Acts as a replacement element for the fuel filtration system, separating water from fuel.

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.

Technical Specifications

Package Contents

• 1 x Water Separating Fuel Filter Disc (Replaces 35-8M0204703 / 35-892665)

Installation Guide

1. Shut off the engine and allow it to cool completely. Ensure the work area is well-ventilated.
2. Turn off the boat's fuel supply valve to prevent fuel flow.
3. Place a suitable catch pan or absorbent rags below the fuel filter housing to collect any spilled fuel.
4. Locate the Gen III fuel cooler and identify the fuel filter housing.
5. Carefully remove the housing cover or fasteners according to your engine's service manual.
6. Remove the old filter disc. Take note of its orientation and any accompanying seals or O-rings.
7. Clean the inside of the housing with a clean, lint-free cloth, ensuring no dirt or debris remains.
8. Install the new filter disc in the correct orientation.
9. Replace any seals or gaskets if they show signs of wear or damage.
10. Securely reinstall the housing cover and tighten it to the manufacturer's specified torque.
11. Turn the fuel supply back on and prime the fuel system if necessary.
12. Start the engine and carefully inspect the filter housing for any signs of fuel leaks.

Troubleshooting & FAQ

Q: How do I know if this filter fits my engine?
A: This filter is specifically for MerCruiser sterndrive and inboard models from 2004 and newer that use the Gen III fuel cooler system. The most reliable way to confirm fitment is by matching your old filter's part number to 35-892665, 8M0204703, or Sierra 18-7715.

Q: What are the signs my fuel filter needs to be replaced?
A: Common symptoms of a clogged or failing fuel filter include engine hesitation, loss of power, sputtering at high speeds, stalling, or difficulty starting. Visible water or debris in the old filter is also a clear indicator for replacement.

Q: Why is it important to use a water-separating filter?
A: Water in the fuel can cause poor engine performance, corrosion of fuel system components, and significant engine damage. A water-separating filter is essential for removing emulsified water from gasoline, protecting your engine and ensuring reliability.

Q: How often should I replace my fuel filter?
A: It is generally recommended to replace your fuel filter annually or every 100 hours of engine operation, whichever comes first. Refer to your engine’s service manual for the specific maintenance interval recommended by Mercury.

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.