Water Separating Fuel Filter – Fits MerCruiser 5.0L/5.7L/6.2L/8.1L/8.2L (Replaces 8M0093688, 866171A01)

Water Separating Fuel Filter – Fits MerCruiser 5.0L/5.7L/6.2L/8.1L/8.2L

This water separating fuel filter is designed for MerCruiser V8 engines (5.0L, 5.7L, 6.2L, 8.1L, and 8.2L) manufactured between 2004 and 2015 that are equipped with the Gen III Cool Fuel System.

It serves as a direct replacement for multiple OEM and aftermarket part numbers, ensuring a precise fit and reliable performance. This filter is crucial for protecting your fuel system from water and contaminants.

• Installation Method: Installs directly into the Gen III Cool Fuel System housing.
• Fuel Compatibility: Designed for use with gasoline only.
• Filtration: Features a 15-micron rating with 95% efficiency to capture harmful debris.

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.

Installation Guide

1. Ensure the engine is off and has cooled down. Relieve pressure from the fuel system according to the manufacturer's guidelines.
2. Locate the Gen III Cool Fuel module, typically mounted on the port side of the engine.
3. Disconnect the module's electrical connector and carefully detach the fuel lines. Have rags ready to catch any residual fuel.
4. Remove the bolts that secure the two halves of the module housing.
5. Gently separate the housing to expose the old fuel filter element, disk, and seals. Pay attention to their orientation.
6. Remove the old components and clean the inside of the housing to remove any sediment or debris.
7. Install the new seals, filter disk, and fuel filter in the correct order, ensuring they are seated properly.
8. Reassemble the module housing and tighten the bolts to the manufacturer's specified torque. Do not overtighten.
9. Reconnect the fuel lines and the electrical connector securely.
10. Prime the fuel system as required for your engine model to fill the filter with fuel.
11. Thoroughly inspect for any fuel leaks around the housing and fittings.
12. Once confirmed leak-free, start the engine and perform a final check for leaks while it is running.

Troubleshooting & FAQ

Q: How do I confirm this filter fits my MerCruiser engine?
A: First, verify that your engine is a MerCruiser V8 (5.0L to 8.2L) from the years 2004–2015 and is equipped with a Gen III Cool Fuel System. You can confirm by checking the compatible models table above or by comparing your old filter's part number to 8M0093688 or 866171A01.

Q: How often should I replace this fuel filter?
A: For optimal engine performance and protection, it's recommended to replace the fuel filter annually or every 100 hours of engine operation, whichever occurs first. This interval may vary based on fuel quality and usage conditions.

Q: What are the signs that my fuel filter is clogged and needs replacement?
A: Common symptoms of a failing fuel filter include the engine sputtering, difficulty starting, stalling at idle, or a noticeable loss of power, particularly under load. These signs indicate that fuel flow is being restricted.

Q: Is this filter for gasoline or diesel engines?
A: This is a water-separating fuel filter designed specifically for gasoline-powered MerCruiser engines. Do not use it with diesel fuel.

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.