Delphi FP10404 Fuel Injection Pressure Regulator

Fuel Pressure Control for Toyota Applications

The Delphi FP10404 fuel injection pressure regulator is built for precise fuel system control in a range of Toyota and Lexus applications. It uses a metal body, a push-in inlet, and a hose outlet to support stable fuel pressure at 44 psi in the specified applications.

With OE-focused engineering informed by Delphi’s long history supplying automakers, this regulator is a direct-fit style replacement for vehicles such as the Toyota Tacoma, 4Runner, T100, Camry, Avalon, Celica, Corolla, Lexus ES300, and Geo Prizm.

Key Features

• Delphi FP10404 fuel injection pressure regulator
• Metal construction for fuel system durability
• Push-in inlet and hose outlet configuration
• Single inlet and single outlet design
• Fixed setting; not adjustable
• System pressure rating: 44 psi
• Bolt-on mounting style
• No gauge port

Detailed Product Overview

The FP10404 is a fuel injection pressure regulator engineered for consistent fuel delivery control in gasoline injection systems. Its 11.0 mm push-in inlet and 8.0 mm hose outlet dimensions support the specified OE-style plumbing layout, while the metal housing helps maintain reliable operation in demanding underhood conditions. This part number is commonly searched as Delphi FP10404 for Toyota Tacoma and Toyota 4Runner fuel pressure regulator replacement needs.

This part cross-references Beck/Arnley 158-1557 and Standard Ignition PR271 for the same application.

What This Part Helps Address

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

Installation Notes and Tips

Verify inlet and outlet port sizes, mounting style, and system pressure before installation. Confirm vehicle application by year, make, and model, especially on Toyota Tacoma, 4Runner, Camry, and Corolla fuel system repairs. Inspect connected hoses and seals for wear, and replace any damaged fuel lines or clamps during service. The FP10404 is not adjustable, so correct application matching is important for proper fuel pressure control.

Quality Assurance

Delphi draws on more than a century of OE experience and supplier knowledge used by major automakers. That OE heritage is reflected in the FP10404’s application-specific design and fuel system specifications for the listed vehicles.

Compatible Vehicles

• Fits 1995-2004 Toyota Tacoma, N/A
• Fits 1996-2000 Toyota 4Runner, N/A
• Fits 1994-1998 Toyota T100, N/A
• Fits 1994-1996 Lexus ES300, N/A
• Fits 1995-1996 Toyota Avalon, N/A
• Fits 1994-1996 Toyota Camry, N/A
• Fits 1992-1993 Toyota Celica, N/A
• Fits 1988-1992 Toyota Corolla, N/A
• Fits 1989 Geo Prizm, N/A