Fuel Injector – Fits Mercury 4.5L & 6.2L MPI (Replaces 8M0057686, 8M6000652, 8M6002428)

Fuel Injector – Fits Mercury 4.5L & 6.2L MPI (Replaces 8M6002428)

This is a direct replacement fuel injector for Mercury MerCruiser 4.5L (200-250 HP) and 6.2L (300-350 HP) MPI sterndrive engines, series 2A441953 & Up and 2A456613 & Up respectively. It is also compatible with select Mercury 4-Stroke EFI outboards from 65 to 115 HP (serial 2B095049 & Up).

This component directly replaces Mercury part numbers 8M0057686, 8M6000652, and 8M6002428, along with Quicksilver part number 8M6002428. Constructed with a corrosion-resistant metal housing and precision-machined internal components, it features an 8-hole nozzle designed for efficient fuel atomization.

• Installation: Direct bolt-on replacement for specified models.
• Fuel Compatibility: Designed for gasoline, including ethanol blends.
• In the Box: Includes one fuel injector and a new seal kit.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across 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 Marine

Mercury Outboard (4-Stroke)

Technical Specifications

Package Contents

• 1 x Fuel Injector (8M6002428)
• 1 x Seal Kit (25-879150A09)

Installation Guide

1. Disconnect the negative battery terminal and safely relieve the fuel system pressure according to your engine's service manual.
2. Unplug the electrical connector from the fuel injector you intend to replace.
3. Clean the area around the fuel rail to prevent debris from entering the engine.
4. Remove the bolts securing the fuel rail to the intake manifold.
5. Carefully lift the fuel rail assembly away from the engine just enough to access the injector.
6. Remove the retaining clip and gently pull the old injector from the fuel rail.
7. Lightly lubricate the new O-rings with clean engine oil and press the new injector firmly into the fuel rail.
8. Reinstall the retaining clip and ensure the injector is secure.
9. Carefully reseat the fuel rail, ensuring all injectors are properly aligned, and torque the retaining bolts to the manufacturer's specification.
10. Reconnect the electrical connector, re-attach the battery terminal, prime the fuel system, and check thoroughly for any leaks before starting the engine.

Troubleshooting & FAQ

Q: How do I confirm this injector fits my Mercury engine?

A: Check your engine's serial number. This injector fits 4.5L MPI sterndrives with serials 2A441953 & Up, 6.2L MPI sterndrives with serials 2A456613 & Up, and 4-stroke outboards (65-115 HP) with serials 2B095049 & Up. The most reliable method is to cross-reference the OEM part number (e.g., 8M6002428) with your engine's parts diagram.

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

A: Common symptoms include rough idling, frequent engine misfires (which may trigger a check engine light), difficulty starting, poor acceleration, a decrease in fuel economy, or a noticeable smell of unburnt gasoline around the engine.

Q: Is this a direct bolt-on part?

A: Yes, this is designed for a direct, bolt-on installation with no modifications required for the compatible models listed. It uses the standard electrical connector and comes with the necessary seals for a complete replacement.

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.