Mercury – Quicksilver 807952A1 Fuel Pressure Regulator Kit | MerCruiser Sterndrive & Inboard | OEM Replacement | 807952A1

Overview

A reliable engine doesn’t happen by luck — it’s built from precision parts that work together without fail. The Quicksilver 807952A1 Fuel Pressure Regulator Kit is one of those small but critical components that keeps your MerCruiser’s fuel system performing exactly as it should. When you hit the throttle, it’s what makes sure your engine gets the steady, balanced fuel pressure it needs — no sputtering, no hesitation, just smooth, confident power.

Whether you’re cruising a lake at sunset or running wide open across the bay, this regulator keeps your fuel delivery stable and your performance consistent. It’s designed to Mercury’s original specifications, so it fits and functions like it came straight off the factory line.

Key Features

• Purpose: Maintains precise fuel pressure in EFI systems to ensure smooth, reliable engine performance across all RPM ranges.
• Fitment: For MerCruiser sterndrive and inboard V6 and V8 GM engines (305, 350, 377 CID), including EFI and MerCruiser 575 Sci models.
• Specifications: Fuel pressure regulator mounts directly on the fuel cooler; features a pink color mark and no ring on the tube base for easy identification.
• Construction: Factory-engineered for correct fuel metering, consistent pressure regulation, and long-term reliability under marine load conditions.
• OEM Design: Built to Mercury Marine standards for exact fit and dependable service life — no modification or tuning required.

Engine & Boat Compatibility

• MerCruiser V6 and V8 GM-based engines (305, 350, 377 CID)
• EFI and MerCruiser 575 Sci engines
• Commonly used on performance cruisers, runabouts, and inboard powerboats

Performance & Practical Benefits

The 807952A1 regulator keeps your fuel system balanced under changing conditions — acceleration, idling, or high-load cruising. By maintaining proper fuel pressure, it prevents lean running, detonation, and loss of performance. You’ll notice smoother throttle response, cleaner starts, and fewer fuel delivery issues in rough conditions.

Its OEM build ensures the internal spring rate and diaphragm tension are precisely matched to Mercury’s EFI calibration. Mounted on the fuel cooler, it’s positioned for optimal temperature control and long-term durability. It’s the kind of part that works quietly in the background but makes a noticeable difference every time you turn the key.

Why Buy OEM

Aftermarket parts can vary in spring tension or sealing quality — small details that have big consequences for EFI systems. With Mercury’s OEM regulator, you’re getting factory-tested precision designed to maintain exact pressure tolerances. That means stable performance, better fuel economy, and fewer headaches over time.

When you buy OEM, you’re buying peace of mind. It fits perfectly, lasts longer, and keeps your engine running the way Mercury intended — strong, smooth, and dependable every trip.

FAQ

Q1: Which Mercury engines does the Quicksilver 807952A1 fit?
A: It’s used on MerCruiser sterndrive and inboard V6 and V8 GM engines (305, 350, 377 CID), including EFI and 575 Sci models.

Q2: What makes this different from aftermarket regulators?
A: It’s tuned and tested to Mercury Marine’s OEM pressure specs, ensuring consistent fuel delivery and longer component life.

Q3: How can I identify this regulator?
A: Look for the pink color mark and the absence of a ring on the base of the tube — those are the correct OEM identifiers.

Q4: Can I install this regulator myself?
A: Yes, most experienced boat owners or marine techs can replace it easily. Always depressurize the system and follow Mercury’s service instructions.

Q5: Is it safe for both saltwater and freshwater use?
A: Yes, though most regulators operate in protected engine spaces, the part is designed to withstand marine conditions typical for both environments.