35-853733A2 Fuel Filter for Mercury Tohatsu 25HP 30HP 40HP | JLM Marine

35-853733A2 Fuel Filter for Mercury Tohatsu 25HP 30HP 40HP | JLM Marine

This high-quality aftermarket fuel filter is engineered to fit Mercury and Tohatsu outboard engines from 25HP to 40HP, covering both 2-cylinder and 3-cylinder configurations in carbureted and EFI models. It ensures reliable fuel filtration to protect your engine from contaminants and maintain optimal performance.

This filter directly replaces Mercury Mercruiser Quicksilver part numbers 35-853733A1, 853733A2, 35-853733A03, and Tohatsu Nissan part numbers 346-02230-0, 3B7-02230-0, 3AD-02230-0, among others, providing broad cross-brand compatibility.

• Compatible with both EFI (Electronic Fuel Injection) and carbureted engine systems
• Fits 2-cylinder and 3-cylinder outboard configurations
• Direct replacement for multiple OEM part numbers across Mercury and Tohatsu brands

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.

Package Contents

• 1 × Fuel Filter (35-853733A2)

Installation Guide

1. Disconnect the fuel line from the engine and relieve any residual fuel pressure in the system. Have a rag or container ready to catch any fuel spillage.
2. Locate the old fuel filter, typically positioned inline between the fuel tank and the engine. Note the direction of fuel flow indicated by the arrow on the old filter housing.
3. Use pliers or a wrench to loosen the hose clamps securing the fuel lines to the filter inlet and outlet. Carefully slide the fuel lines off the filter.
4. Remove the old fuel filter and inspect the fuel lines for cracks, wear, or damage. Replace hoses if necessary.
5. Install the new fuel filter, ensuring the arrow on the filter body points in the direction of fuel flow (from tank to engine). Slide the fuel lines onto the filter inlet and outlet.
6. Secure the fuel lines with new or existing hose clamps, tightening them firmly to prevent leaks. Reconnect the fuel line to the engine.
7. Prime the fuel system by squeezing the primer bulb until it becomes firm. Start the engine and check for leaks around the filter connections.
8. Allow the engine to run for a few minutes and inspect the filter area again. If any leaks are detected, shut off the engine and re-tighten the clamps.

Troubleshooting & FAQ

Q: How do I confirm this fuel filter fits my Mercury or Tohatsu engine?
A: Check the compatible engine models table above for your horsepower, cylinder count, and serial number range. You can also cross-reference your original part number with the part number table to ensure compatibility.

Q: How often should I replace my outboard fuel filter?
A: Replace your fuel filter every 100 hours of operation or annually, whichever comes first. If you notice performance issues like rough idling, hard starting, or loss of power, inspect and replace the filter immediately.

Q: What are the signs of a clogged or failing fuel filter?
A: Common symptoms include difficulty starting the engine, sputtering or stalling at high RPM, reduced top speed, and poor acceleration. A visual inspection may reveal debris or discoloration inside the filter housing.

Q: Can I use this filter on both carbureted and EFI engines?
A: Yes, this fuel filter is designed to fit both carbureted and EFI (Electronic Fuel Injection) Mercury and Tohatsu outboards within the specified horsepower and serial number ranges.

Q: Is this an OEM part or an aftermarket replacement?
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.