Delphi FP10427 Fuel Injection Pressure Regulator

Fuel Pressure Control for Mitsubishi and Dodge

Delphi FP10427 is a fuel injection pressure regulator built for select Mitsubishi and Dodge applications that require stable fuel system pressure. It is a metal, bolt-mounted regulator with a push-in inlet, hose outlet, and a 51 system pressure rating for direct replacement use on listed vehicles.

Compatible With 1989-1994 Mitsubishi Montero and Mighty Max, plus 1989-1991 Dodge Raider and Ram 50 applications. Delphi FP10427 is a practical choice when you need a fuel injection pressure regulator for Mitsubishi Montero fuel system service or a Dodge Ram 50 fuel pressure repair.

Key Features

• Delphi FP10427 fuel injection pressure regulator
• Metal construction for fuel system durability
• Push-in inlet and hose outlet configuration
• Bolt-on mounting style
• Fixed-pressure design; not adjustable
• Single inlet and single outlet layout
• 51 system pressure specification
• No gauge port

Detailed Description

This fuel injection pressure regulator helps maintain the fuel pressure required by the injection system on supported Mitsubishi and Dodge vehicles. Delphi builds this part using OE experience and heritage gained from supplying top automakers, and that background is reflected in the fit, materials, and application-focused design of FP10427. The regulator is intended for direct replacement on listed Montero, Mighty Max, Raider, and Ram 50 models where the original configuration matches the inlet, outlet, and mounting style.

This part cross-references Standard Ignition PR129 and NTK 23001 for the same application.

What It Helps Fix

• Fuel pressure that is too high or too low
• Hard starting caused by unstable fuel delivery
• Rough idle related to inconsistent injector pressure
• Fuel odor or rich-running symptoms from regulator failure
• Driveability issues tied to worn fuel pressure control

Installation Notes and Tips

• Verify the inlet and outlet style before ordering: push-in inlet, hose outlet.
• Confirm the mounting location and pressure specification match the original regulator.
• Inspect fuel hoses and connections during replacement to prevent leaks.
• Use the vehicle service procedure for depressurizing the fuel system before removal.
• Check for proper sealing after installation and before returning the vehicle to service.

Quality Assurance

Delphi applies OE-focused engineering and manufacturing knowledge to aftermarket fuel system parts, drawing on more than a century of original equipment experience. FP10427 is built to meet the application requirements of the listed Mitsubishi and Dodge vehicles.