807952A1 Fuel Pressure Regulator for MerCruiser | JLM Marine

Fuel Pressure Regulator for MerCruiser 350 377 807952A1 5.0 5.7 6.2 7.4 454 4.3

This fuel pressure regulator is designed for MerCruiser EFI engines, including GM V-6 and V-8 models such as 305, 350, 377, and MCM 575SCi. It mounts directly on the fuel cooler and ensures proper fuel pressure regulation for optimal engine performance.

This aftermarket replacement directly replaces OEM part number 807952A1, providing reliable fitment and function for your MerCruiser fuel system.

• Mounts on fuel cooler (pink mark location)
• Compatible with MerCruiser EFI V-6 and V-8 engines
• Direct replacement for OEM 807952A1

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.

Technical Specifications

Package Contents

• 1 × Fuel Pressure Regulator

Installation Guide

1. Disconnect the negative battery cable and relieve fuel system pressure before beginning work.
2. Locate the fuel cooler on your MerCruiser engine and identify the mounting point marked with a pink indicator.
3. Disconnect the fuel lines from the old pressure regulator, using appropriate line wrenches to prevent damage. Have a rag ready to catch any residual fuel.
4. Remove the mounting bolts securing the old regulator to the fuel cooler.
5. Clean the mounting surface on the fuel cooler to ensure a proper seal.
6. Position the new fuel pressure regulator onto the fuel cooler, aligning the mounting holes.
7. Install and torque the mounting bolts to manufacturer specifications.
8. Reconnect the fuel lines to the new regulator, ensuring all connections are tight and secure.
9. Reconnect the negative battery cable and turn the ignition key to the "on" position (without starting) to pressurize the fuel system.
10. Inspect all connections for fuel leaks. If leaks are detected, relieve pressure and re-tighten connections.
11. Start the engine and allow it to idle, checking again for any fuel leaks.
12. Test the engine under normal operating conditions to verify proper fuel pressure and performance.

Troubleshooting & FAQ

Q: How do I confirm this fuel pressure regulator fits my MerCruiser engine?
A: Check the compatibility table above for your engine model. This regulator fits MCM/MIE GM V-6 and V-8 engines (305, 350, 377 EFI) and MCM 575SCi models. If you're unsure, provide your engine serial number to verify fitment before purchasing.

Q: What are the signs that my fuel pressure regulator needs replacement?
A: Common symptoms include hard starting, rough idle, poor acceleration, black smoke from the exhaust, fuel odor, or visible fuel leaks around the regulator. A fuel pressure gauge test can confirm if the regulator is maintaining proper pressure.

Q: Where exactly does this regulator mount on my engine?
A: This fuel pressure regulator mounts directly on the fuel cooler, specifically at the location marked with a pink indicator on MerCruiser EFI engines.

Q: How often should I replace the fuel pressure regulator?
A: There's no fixed replacement interval for fuel pressure regulators. Replace when you experience symptoms of failure or during routine fuel system maintenance. Inspect regularly for leaks or damage, especially on older engines.

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.