Fuel Filter for MerCruiser V-8 Engines – Fits 350/370/496/5.0L/5.7L/6.2L/8.1L/8.2L with Gen III Cool Fuel System

Fuel Filter for MerCruiser V-8 Engines with Gen III Cool Fuel System

This high-quality aftermarket fuel filter is engineered for MerCruiser V-8 marine engines (2004–2015) equipped with the Gen III Cool Fuel System. It is a direct-fit replacement, ensuring proper filtration and fuel flow to protect your engine from water and contaminants.

It is designed for sterndrive and inboard models, including 350 MAG, 370, 496 MAG, 5.0L, 5.7L, 6.2L, 8.1L, and 8.2L engines. This filter replaces Mercury part numbers 35-8M0093688, 866171A01, and Sierra 18-7977.

• Installation Type: Installs directly into the Gen III Fuel Cooler housing.
• Fuel Compatibility: Designed for gasoline-powered engines only.
• Critical Function: Separates water from fuel to prevent engine damage and corrosion.

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

A full kit typically includes:

• 1 x Fuel Filter (Replaces 35-8M0093688, 866171A01)
• 1 x Filter Disk (Replaces 35-892665, 8M0204703)
• 2 x Seals/Gaskets

Note: Package contents may vary by manufacturer or seller. Some packages may only include the filter element. Please verify contents with your retailer before purchase.

Installation Guide

1. Ensure the engine is off and the battery is disconnected for safety.
2. Locate the Gen III Cool Fuel module on your engine. Place a suitable container underneath to catch any spilled fuel.
3. Carefully relieve the fuel system pressure as described in your engine's official service manual.
4. Remove the cover from the fuel cooler housing to access the filter assembly.
5. Take out the old fuel filter, filter disk, and seals, noting their order and orientation.
6. Clean any sediment or debris from inside the housing.
7. Install the new seals, filter disk, and fuel filter, ensuring they are seated correctly.
8. Reinstall the housing cover and tighten it to the manufacturer's specified torque.
9. Reconnect the battery.
10. Prime the fuel system according to your engine's procedure.
11. Check thoroughly for any fuel leaks around the housing before starting the engine.

Troubleshooting & FAQ

How do I confirm this filter fits my engine?

This filter is specifically for MerCruiser V-8 engines made between 2004 and 2015 that are equipped with a Gen III Cool Fuel System. To ensure a perfect match, check your engine model against the "Compatible Engine Models" list and verify your existing part number corresponds to one of the cross-references, such as 35-8M0093688 or 866171A01.

What are the signs that my fuel filter needs replacing?

Common symptoms of a clogged or failing fuel filter include engine hesitation, sputtering, reduced power, difficulty starting, or stalling. Water contamination may also trigger engine alarms. We recommend replacing it as part of your annual service schedule.

What is included in the package?

A complete kit usually includes the main fuel filter, a filter disk, and two new seals. However, package contents can vary by seller. Always confirm what is included before making your purchase to ensure you receive all necessary components.

OEM vs. Aftermarket?

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.

How fast do you ship and how much does it cost?

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.

What is your warranty and return policy?

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.