Fuel Pump Assembly – Fits Mercury/Mariner 25-60 HP 4-Stroke (Replaces 8M0141844, 8M0118176, 881862T1)

Fuel Pump Assembly – Fits Mercury/Mariner 25-60 HP 4-Stroke (Replaces 8M0141844, 8M0118176, 881862T1)

This fuel pump assembly is designed for a wide range of Mercury and Mariner 4-stroke outboard engines from 25 HP to 60 HP (model years 2000–2021), including both 3-cylinder and 4-cylinder EFI models. It serves as a direct replacement part, manufactured to meet or exceed original equipment specifications for reliable performance.

This component directly replaces Mercury part numbers 8M0141844, 8M0118176, 881862T1, 881862T07, 892874T, 892874T01, 899106T, and 899106T01. It is also cross-compatible with Sierra 18-8866 and WSM 600-092.

• Installation: Engineered for a direct plug & play fit using OEM-compatible connections.
• Fuel Compatibility: Fully compatible with standard gasoline and E10 ethanol blends.
• Complete Assembly: Includes the fuel pump assembly and a new cable tie for securing wiring.

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.

Mercury Models

Mariner Models

Technical Specifications

Package Contents

• 1 x Fuel Pump Assembly (Replaces 8M0118176/8M0141844)
• 1 x Cable Tie (Replaces 54-816311T)

Installation Guide

1. Safety First: Work in a well-ventilated area away from open flames or sparks. Disconnect the negative battery terminal before beginning.
2. Relieve Fuel Pressure: Safely relieve the pressure from the fuel system according to your engine's service manual to prevent spills.
3. Disconnect Lines: Carefully disconnect the electrical connector and the fuel inlet/outlet hoses from the old pump assembly. Have rags ready to catch any residual fuel.
4. Remove Old Pump: Unbolt and remove the existing fuel pump assembly from its mounting location.
5. Compare Parts: Before installing, place the old and new pump assemblies side-by-side to confirm an identical match in size, fittings, and electrical connections.
6. Install New Pump: Mount the new fuel pump assembly securely in place.
7. Reconnect Lines: Re-attach the fuel hoses and the electrical connector, ensuring all connections are tight and secure. Use the new cable tie to secure wiring as needed.
8. Reconnect Battery: Re-attach the negative battery terminal.
9. Prime and Test: Prime the fuel system by turning the ignition key to the 'ON' position several times without starting the engine.
10. Check for Leaks: Once primed, carefully inspect all fuel line connections and the pump housing for any signs of leaks before starting the engine.

Troubleshooting & FAQ

How do I confirm this pump fits my Mercury/Mariner engine?
Start by checking the compatibility tables on this page. Match your engine's brand, model, horsepower, and year range. For final confirmation, compare your existing part number to those listed in our Part Number Cross-Reference table, such as 8M0141844, 8M0118176, or 881862T1.

What are common signs of a failing fuel pump?
Symptoms often include the engine struggling to start, hesitating or sputtering during acceleration, losing power under load, or stalling unexpectedly. Reduced fuel pressure is the primary cause of these issues.

Is this a direct plug-and-play installation?
Yes, this assembly is manufactured to OEM specifications with identical mounting points, fuel line fittings, and electrical connectors. It is designed for a direct replacement without any modifications.

How often should I replace the fuel pump?
Fuel pumps do not have a fixed replacement interval. They should be replaced when they fail or show signs of weak performance. We recommend inspecting the fuel system as part of your engine's regular maintenance schedule.

OEM vs. Aftermarket?
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.