Delphi FP10520 Fuel Injection Pressure Regulator

Fuel Pressure Control for Toyota EFI Systems

The Delphi FP10520 fuel injection pressure regulator is built for Toyota fuel delivery systems that need stable, consistent fuel pressure. With a metal body, hose inlet, and threaded outlet, it supports precise fuel metering for 1988-1995 Toyota 4Runner, 1988-1995 Toyota Pickup, and 1993-1994 Toyota T100 applications.

Key Features

• Metal construction for durable fuel system service
• Hose inlet and threaded outlet for OE-style routing
• 1 inlet and 1 outlet configuration
• Non-adjustable design for factory-style pressure control
• No gauge port
• Delphi FP10520 fuel injection pressure regulator for Toyota EFI applications

Detailed Description

Delphi FP10520 is a fuel injection pressure regulator engineered for vehicles that rely on accurate fuel pressure regulation to maintain proper injector performance. Delphi draws on OE experience and supplier knowledge developed over decades of original equipment work, and that background is reflected in the fit, materials, and function of this replacement part. This regulator is a direct-match option for 1988-1995 Toyota 4Runner, 1988-1995 Toyota Pickup, and 1993-1994 Toyota T100 models that use a hose inlet and threaded outlet layout. If you are searching for a Toyota 4Runner fuel injection pressure regulator or a Toyota Pickup fuel pressure regulator, FP10520 is the part number to reference.

This part cross-references Standard Ignition PR114 for the same application.

Common Issues This Part May Address

• Fuel pressure that is too high or too low at the rail
• Hard starting caused by unstable injector pressure
• Rich or lean running conditions tied to pressure regulation
• Fuel odor or drivability concerns related to regulator failure
• Inconsistent throttle response on Toyota EFI systems

Installation Notes and Tips

Confirm the inlet and outlet style before installation: this regulator uses 1 hose inlet and 1 threaded outlet, with no gauge port and no adjustment feature. Verify the vehicle’s fuel system layout and match the regulator to the original configuration on 1988-1995 Toyota 4Runner, 1988-1995 Toyota Pickup, or 1993-1994 Toyota T100. Clean the surrounding fuel lines and inspect sealing surfaces before reassembly to help prevent leaks.

Quality Assurance

Delphi builds aftermarket parts using OE heritage and technical knowledge developed through supplying major automakers, giving this FP10520 regulator a service-focused design rooted in original equipment experience.