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

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

This fuel pump assembly is designed for Mercury/Mariner 25–60 HP 4-Stroke outboard engines (2002–2021), including both 3-cylinder and 4-cylinder EFI models. It serves as a direct-fit replacement, manufactured to meet or exceed original equipment specifications for reliable performance.

It directly replaces Mercury part numbers 881862T1, 881862T07, 892874T, 892874T01, 899106T, 899106T01, 8M0118176, 8M0118177, 8M0141827, and 8M0141844, as well as Sierra 18-8866 and WSM 600-092.

• Engineered for a direct plug & play connection, ensuring straightforward installation without modifications.
• Fully compatible with standard Gasoline/Petrol fuel, including E10 blends.
• The package includes one complete fuel pump assembly and one cable tie for a comprehensive replacement.

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

The package contains the following items:

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

Installation Guide

Professional installation is recommended. The following is a general guide:

1. Safety First: Disconnect the battery terminals and ensure the work area is well-ventilated.
2. Relieve Fuel Pressure: Safely relieve the pressure from the fuel system according to your engine's service manual.
3. Disconnect Connections: Carefully detach the electrical connector and fuel lines from the old pump assembly. Have rags ready to catch any residual fuel.
4. Remove Old Pump: Unbolt and remove the existing fuel pump from its mounting location.
5. Install New Pump: Mount the new fuel pump assembly, ensuring it is securely fastened.
6. Reconnect Lines: Re-attach the fuel lines and the electrical connector to the new pump. Ensure all fittings are tight.
7. Final Checks: Reconnect the battery. Prime the fuel system by turning the ignition key to the 'ON' position several times without starting the engine. Check for any leaks before starting the engine.

Troubleshooting & FAQ

How do I confirm this fits my engine?
First, check your original part number against our cross-reference list. Second, review the compatible engine models table to ensure your specific model and year range are listed. For Mercury/Mariner owners, we provide a link to a serial number guide to help verify your engine details.

What are common signs of a failing fuel pump?
Symptoms include difficulty starting the engine, engine bogging down under acceleration, stalling at low speeds, or a noticeable loss of power. A whining noise from the fuel tank area can also indicate a failing pump.

Is any modification required for installation?
No. This is a direct-fit replacement designed with a "plug & play" electrical connection and OEM-compatible fittings. No special modifications are needed for the models listed.

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.