Delphi FP10375 Fuel Injection Pressure Regulator

Fuel Pressure Control for OE-Style Repair

The Delphi FP10375 fuel injection pressure regulator is built for returnless fuel systems that need stable pressure control and consistent fuel delivery. With a metal body, push-in inlet, clamp mounting, and no gauge port, it matches the needs of select GM truck and SUV applications.

Compatible with 2000-2003 Chevrolet and GMC fuel system applications, including Silverado 1500, Tahoe, Sierra 1500, and Yukon models, this regulator supports direct replacement service where the original unit has failed or pressure control has become inconsistent. Delphi FP10375 is also referenced by several aftermarket part numbers for the same application.

Key Features

• Fuel injection pressure regulator for returnless fuel systems
• Metal construction for durable underhood service
• Push-in inlet with clamp-style mounting
• 1 inlet and 1 outlet configuration
• No gauge port
• Non-adjustable design
• Inlet port diameter: 0.91 in. / 23.0 mm
• OE-focused engineering from Delphi

Detailed Description

Delphi FP10375 is a fuel injection pressure regulator designed around OE-style fit and function for select Chevrolet, Cadillac, and GMC applications. It is specified for returnless fuel delivery systems and uses a metal housing with a push-in inlet and clamp mounting for a secure installation. Delphi draws on long-term OE supply experience, and that background is reflected in the design and application coverage of this regulator.

This part cross-references Standard Ignition PR121 and PR217 for the same application. It is a direct-fit option for vehicles such as the 2000-2002 Chevrolet Silverado 1500, 2000-2002 GMC Sierra 1500, and 2000-2002 Chevrolet Tahoe with top mounted vacuum port, 2nd design.

What It 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 trim problems from inconsistent rail pressure
• Driveability complaints tied to a failing regulator

Installation Notes and Tips

Verify the vehicle’s fuel system design before ordering, since this regulator is listed for returnless applications and specific 2nd design configurations. Confirm the inlet style, mounting method, and port layout against the original part, especially on 2000-2003 Chevrolet Silverado, Tahoe, Suburban, Avalanche, and related GMC Sierra and Yukon models.

For best results, inspect the fuel lines, seals, and surrounding components during replacement. Always relieve fuel system pressure before service and follow the vehicle manufacturer’s repair procedures.

Quality Assurance

Delphi builds aftermarket parts using OE heritage and application knowledge developed through decades of supplying major automakers. FP10375 is engineered to meet the fitment and functional requirements of the listed GM applications.