35-49088A2 Fuel Pump Filter for Mercruiser 120 140 2.5L 3.0L 165 160 200 470 488 485 | JLM Marine

Fuel Pump Filter Assembly – Fits Mercruiser 120, 140, 2.5L, 3.0L, 165, 160, 200, 470, 488, 485

This fuel pump filter assembly is engineered for Mercruiser inline 4-cylinder and 6-cylinder engines, including the 120, 140, 2.5L, 3.0L, 165, 160, 200, 470, 488, and 485 models. Designed to ensure clean fuel delivery and optimal engine performance, this component is essential for maintaining your marine engine's fuel system integrity.

This assembly directly replaces OEM part numbers 35-49088A2, 35-49088Q2, 35-49088, FI8390006, and Sierra 18-7860, providing reliable aftermarket compatibility across multiple Mercruiser engine families spanning from the 1960s through the late 1980s.

• Complete fuel filter assembly ready for installation
• Fits both 4-cylinder and 6-cylinder Mercruiser inline engines
• Ensures clean fuel delivery for consistent engine performance

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

This package includes:

• 1 x Fuel Filter Assembly

Installation Guide

1. Disconnect the battery to prevent accidental ignition. Ensure the engine is cool before beginning work.
2. Relieve fuel system pressure by loosening the fuel cap and allowing vapors to escape.
3. Locate the existing fuel filter assembly on your Mercruiser engine. It is typically mounted near the fuel pump.
4. Place a drain pan beneath the filter to catch any residual fuel.
5. Disconnect fuel lines from the old filter assembly using appropriate wrenches. Mark or photograph line positions for reference.
6. Remove mounting hardware and carefully extract the old fuel filter assembly.
7. Inspect fuel lines and fittings for wear, cracks, or damage; replace if necessary.
8. Position the new fuel filter assembly in the mounting location, ensuring proper orientation for fuel flow direction.
9. Reconnect fuel lines to the corresponding inlet and outlet ports. Tighten fittings securely but do not over-torque.
10. Secure the assembly with original mounting hardware, ensuring it is firmly attached.
11. Prime the fuel system by turning the ignition key to the on position without starting the engine. Check for leaks at all connections.
12. Reconnect the battery, start the engine, and verify smooth operation with no fuel leaks.

Troubleshooting & FAQ

How do I confirm this fuel filter fits my Mercruiser engine?
Cross-reference your engine model and year with the compatibility table above. Verify your original part number matches one of the listed OEM numbers: 35-49088A2, 35-49088Q2, 35-49088, or FI8390006.

How often should I replace the fuel filter assembly?
Replace the fuel filter every 100 hours of operation or annually, whichever comes first. More frequent replacement may be necessary if you regularly use ethanol-blended fuels or notice performance issues.

What are the signs that my fuel filter needs replacement?
Common symptoms include difficulty starting, engine hesitation or sputtering, reduced power output, and rough idling. A clogged filter restricts fuel flow and can cause poor engine performance.

Can I use this filter with ethanol-blended fuels?
Yes, this fuel filter assembly is compatible with modern ethanol-blended fuels (E10). However, ethanol can accelerate filter contamination, so inspect and replace more frequently if using these fuels regularly.

What is the difference between this aftermarket part and the OEM version?
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.