Fuel Pump Assembly – Fits Mercury/Mariner 25-60 HP 4-Stroke Outboards (Replaces 881862T1, 892874T01, 899106T01)

Fuel Pump Assembly – Fits Mercury/Mariner 25-60 HP 4-Stroke Outboards

This fuel pump assembly is designed for Mercury and Mariner 25–60 HP 4-Stroke outboard engines (2000–2021), covering both 3-cylinder and 4-cylinder EFI models. It serves as a reliable, direct-fit replacement, manufactured to meet or exceed original equipment specifications for performance and durability.

Engineered for a precise fit, this assembly replaces a wide range of original Mercury part numbers, ensuring seamless integration with your existing fuel system. Its robust construction and OEM-compatible connections provide a dependable solution for restoring fuel delivery and engine efficiency.

• Installation Method: Direct Plug & Play replacement.
• Fuel Compatibility: Gasoline and E10 blends.
• Package Includes: 1x Fuel Pump Assembly, 1x Cable Tie.

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

• 1 x Fuel pump assembly (8M0118176/8M0141844)
• 1 x Cable tie (54-816311T)

Installation Guide

1. Safety First: Disconnect the battery and work in a well-ventilated area away from sparks or open flames.
2. Locate the Pump: Identify and access the existing fuel pump assembly on the engine.
3. Disconnect Lines: Carefully disconnect the fuel lines and electrical connectors from the old pump. Use a rag to catch any residual fuel.
4. Remove Old Pump: Unbolt and remove the old fuel pump assembly from its mounting bracket.
5. Install New Pump: Mount the new fuel pump assembly, ensuring it is securely fastened.
6. Reconnect: Re-attach the fuel lines and electrical plug to the new pump. Confirm all connections are tight.
7. Prime System: Prime the fuel system according to your engine’s service manual to ensure fuel fills the new pump and lines.
8. Final Check: Reconnect the battery, start the engine, and carefully check for any leaks or operational issues.

Troubleshooting & FAQ

Q: How do I confirm this part fits my engine?

A: The best way to ensure fitment is to match your original part number to one of the numbers in our Part Number Cross-Reference table. You can also check our Compatible Engine Models table, but always verify visually that our product images match your existing part before ordering.

Q: What are the signs of a failing fuel pump?

A: Common symptoms include difficulty starting the engine, sputtering or stalling at high speeds, loss of power, and unusual whining noises from the fuel pump area. A failing pump can lead to a lean fuel mixture, which may cause long-term engine damage.

Q: Is this a high-pressure or low-pressure pump?

A: This is a complete fuel pump assembly designed for EFI (Electronic Fuel Injection) systems, which typically includes both a low-pressure and a high-pressure pump within the VST (Vapor Separator Tank) module to deliver fuel at the correct pressure for the injectors.

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.