Marine Oil Filter – Fits Mercury & Yamaha Outboards (Replaces 825467A1, 825467T1, 6G8-13440-00-00)

Marine Oil Filter – Fits Mercury & Yamaha Outboards

This high-efficiency spin-on oil filter is designed for reliable performance in specific 4-stroke outboard engines. It provides essential protection by filtering contaminants from the engine oil, ensuring longevity and optimal operation.

Engineered to meet or exceed original equipment manufacturer (OEM) specifications, this filter is a direct replacement for several common part numbers, providing a dependable alternative for routine maintenance.

• Installation Type: Spin-On
• Primary Material: Heavy-walled, epoxy-coated steel canister for corrosion resistance.
• Included in Package: Contains one (1) oil filter.

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.

For Yamaha owners, here’s a guide to help you identify your engine’s serial/model: Yamaha Serial Number Guide. You can also review exploded diagrams to verify part numbers: Yamaha Parts Diagrams & Catalog.

Mercury/Mariner

Yamaha

Technical Specifications

Package Contents

This package includes:

• 1 x Oil Filter (Sierra 18-7901)

Explosion Diagram

Installation Guide

1. Place an oil drain pan under the existing filter on your engine.
2. Using an oil filter wrench, turn the old filter counter-clockwise to loosen and remove it.
3. Wipe the engine's filter mounting surface clean, ensuring no old gasket material remains.
4. Lightly coat the gasket of the new filter with a thin film of fresh engine oil.
5. Carefully screw the new filter onto the mounting point by hand until its gasket makes contact.
6. Tighten the filter by hand for an additional three-quarters to one full turn. Do not overtighten.
7. Refill the engine oil to the proper level according to your owner's manual.
8. Start the engine and carefully inspect for any leaks around the new filter.

Troubleshooting & FAQ

Q: How do I confirm this filter fits my specific engine?
A: Please review the "Compatible Engine Models" and "Part Number Cross-Reference" tables on this page. The most reliable method is to match the part number from your old filter or service manual to the numbers listed.

Q: How often should I replace my outboard's oil filter?
A: It is best to follow the service interval recommended in your engine's owner's manual. As a general guideline, the oil and filter should be changed every 100 hours of operation or at least once per year, whichever comes first.

Q: Is this an OEM filter?
A: This is an aftermarket filter manufactured to meet or exceed OEM specifications for filtration and fitment, but it is not an original equipment part from Mercury or Yamaha.

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.