Delphi FP10490 Fuel Injection Pressure Regulator

Delphi FP10490 Fuel Pressure Regulator

The Delphi FP10490 fuel injection pressure regulator is built for precise fuel system control in select Honda applications. It uses a metal body, a push-in inlet, and a hose outlet to support stable fuel pressure at 39 psi.

Key Features

• Metal construction for fuel system durability
• Push-in inlet with 11.0 mm inlet port diameter
• Hose outlet with 8.0 mm outlet port diameter
• Single inlet and single outlet layout
• Bolt-mounted design
• Fixed-pressure regulator with no adjustment provision
• No gauge port

Application Details

Compatible with 1985-1987 Honda Accord and 1985-1987 Honda Prelude. This Delphi FP10490 fuel injection pressure regulator is a direct-fit style replacement for vehicles that require a 39 psi system pressure regulator with the listed inlet and outlet configuration. It is also cross-referenced to Standard Ignition PR86 and PR478 for the same application.

What It Helps Address

• Fuel pressure that is too high or too low
• Hard starting caused by unstable fuel delivery
• Rough idle related to inconsistent injector pressure
• Fuel mixture issues tied to regulator wear
• Driveability problems from a failing pressure control component

Installation Notes and Tips

Verify inlet and outlet port sizes, mounting style, and system pressure before installation. Confirm the vehicle uses a push-in inlet and hose outlet arrangement, and inspect fuel lines and seals for wear during replacement. Always follow the service procedure for the specific Honda Accord or Honda Prelude application.

Quality Assurance

Delphi brings OE heritage and more than a century of original-equipment experience to aftermarket fuel system parts. FP10490 is built using that OE-focused engineering background to support consistent fit and function in the listed applications.