Delphi FP10391 Fuel Injection Pressure Regulator

Fuel Pressure Control for OE-Style Performance

The Delphi FP10391 fuel injection pressure regulator is a metal, push-in replacement built for precise fuel pressure control in older Chrysler, Dodge, and Plymouth fuel injection systems. It supports consistent injector operation and direct-fit service on a wide range of 1986-1996 applications, including Dodge Dakota, Dodge Caravan, and Plymouth Voyager.

Key Features

• Metal construction for durable fuel system service
• Push-in inlet and push-in outlet for OE-style connection points
• 1 inlet and 1 outlet configuration
• Non-adjustable design for factory-style pressure regulation
• No gauge port
• Delphi FP10391 fuel injection pressure regulator for direct replacement use

Detailed Description

Delphi FP10391 is a fuel injection pressure regulator engineered for vehicles that use a push-in fuel line layout and a single inlet/single outlet regulator design. Delphi draws on OE heritage and supplier experience to produce aftermarket parts with factory-style fit and function, making this regulator a practical choice for maintaining stable fuel delivery in Chrysler, Dodge, and Plymouth fuel injection systems. This part cross-references Standard Ignition PR13 for the same application.

Compatible With 1989-1996 Dodge Dakota, 1988-1995 Dodge Caravan, 1987-1995 Plymouth Voyager, and other listed Chrysler, Dodge, and Plymouth applications. The Delphi FP10391 is also a relevant search match for Dodge Dakota fuel injection pressure regulator replacement and Dodge Caravan fuel pressure regulator service.

Common Problems It Can Help Address

• Unstable fuel pressure at the injector rail
• Hard starting caused by incorrect fuel pressure regulation
• Rich or lean running from a failing regulator
• Fuel pressure loss after shutdown
• Driveability issues tied to inconsistent fuel delivery

Installation Notes and Tips

• Verify the vehicle uses push-in inlet and outlet connections before ordering.
• Confirm the regulator location and fuel system layout against the original part.
• Inspect fuel lines, seals, and surrounding components for wear before installation.
• Relieve fuel system pressure before removing the existing regulator.
• After installation, check for leaks and confirm proper fuel pressure during engine operation.

Quality Assurance

Delphi builds this regulator with OE experience and supplier knowledge developed through work with major automakers. The FP10391 reflects that background in an aftermarket replacement part intended for dependable fuel system service.