Delphi FP10404 Fuel Injection Pressure Regulator

Delphi Fuel Injection Pressure Regulator Overview

The Delphi FP10404 fuel injection pressure regulator is designed to maintain consistent fuel pressure in your vehicle's fuel injection system. Engineered with durable metal construction, this regulator ensures reliable performance for select Geo, Lexus, and Toyota models including the 4Runner, Avalon, Camry, Celica, Corolla, ES300, Prizm, T100, and Tacoma.

• Durable metal material for long-lasting use
• Non-adjustable design for precise factory-set pressure
• System pressure rating of 44 psi
• Push-in inlet type with 0.43 inch (11.0 mm) diameter
• Hose outlet type with 0.31 inch (8.0 mm) diameter
• Single inlet and outlet ports for straightforward installation
• Bolt mounting type for secure attachment

Technical Details and Specifications

The FP10404 fuel injection pressure regulator by Delphi is constructed entirely from metal, providing strength and resistance to wear under high-pressure fuel system conditions. It features a push-in inlet port with a diameter of 0.43 inches (11.0 mm) and a hose-type outlet port measuring 0.31 inches (8.0 mm). This regulator is designed with one inlet and one outlet port, simplifying fuel flow management. The mounting is secured via bolts, ensuring a stable fit within the fuel injection system. The system pressure is set at 44 psi, matching factory specifications for consistent fuel delivery.

Compatible Vehicles and Applications

This fuel injection pressure regulator is compatible with a range of Geo, Lexus, and Toyota vehicles. It is suitable for models such as the Toyota 4Runner, Avalon, Camry, Celica, Corolla, Tacoma, and T100, as well as the Lexus ES300 and Geo Prizm. The FP10404 part number corresponds to the exact replacement part needed for maintaining proper fuel pressure in these vehicles' fuel injection systems.

Common Issues Addressed by the FP10404 Regulator

• Fuel pressure fluctuations causing engine performance issues
• Hard starting or stalling due to inconsistent fuel delivery
• Reduced fuel efficiency from improper fuel pressure
• Engine hesitation or misfires under load
• Fuel leaks or pressure loss from worn or damaged regulators

Installation Notes and Tips

Installation of the Delphi FP10404 fuel injection pressure regulator requires basic mechanical skills and proper tools. Ensure the engine is cool and fuel system pressure is relieved before removal. The bolt mounting type allows for secure attachment; verify that the push-in inlet and hose outlet connections are properly seated and free of leaks. Replace any worn fuel lines or clamps during installation to maintain system integrity.

Quality Assurance and Warranty

Delphi manufactures the FP10404 fuel injection pressure regulator to meet OEM standards for fit, form, and function. The metal construction and precise system pressure rating ensure durability and consistent performance. While specific warranty details may vary, Delphi parts typically come with a limited warranty covering defects in materials and workmanship.