Walker 255-1025 Fuel Injection Pressure Regulator

Fuel Pressure Control for GM Applications

Walker Products 255-1025 is a fuel injection pressure regulator for select Chevrolet, GMC, Buick, Cadillac, Pontiac, Oldsmobile, and Isuzu applications from 1988-1995. It is built for direct replacement service on vehicles such as the Chevrolet S10, GMC Sonoma, and Chevrolet C1500, with fitment coverage across many GM trucks, vans, SUVs, and passenger models.

Key Features

• Fuel injection pressure regulator for air and fuel delivery service
• Walker Products replacement part number 255-1025
• Fits a broad range of 1988-1995 GM and Isuzu applications
• Includes O-ring references in select fitment notes
• Backed by Walker Products manufacturing and engineering support
• Walker Products has supplied fuel system components since 1946

Product Details

Walker Products 255-1025 is a fuel injection pressure regulator engineered for vehicles that require stable fuel pressure at the injection system. Walker Products manufactures fuel system and engine management components to meet or exceed OEM standards and specifications, with production supported by in-house product management, engineering, and technical documentation. This part cross-references Standard Ignition PR131 and Gates 21025 for the same application.

Compatible With 1988-1995 Chevrolet S10, 1989-1995 GMC Sonoma, and 1995 Chevrolet C1500 applications, this regulator also covers many related GM truck, van, SUV, and passenger car platforms. Use the part number 255-1025 to verify application details during lookup and ordering.

Common Symptoms This Part May Address

• Fuel pressure that is too high or too low at the rail
• Hard starting after the vehicle sits
• Rough idle or inconsistent engine performance
• Fuel odor from a leaking regulator or seal area
• Driveability issues tied to unstable injector fuel delivery

Installation Notes and Tips

Confirm the vehicle year, make, model, and engine-specific application before installation. Review the fitment notes for O-ring references and application-specific details, especially on 1995 Chevrolet and GMC listings. Inspect the fuel system for contamination, damaged seals, or related wear before replacing the regulator. After installation, check for leaks and verify fuel pressure against service specifications.

Quality Assurance

Walker Products is an ISO 9001 and IATF 16949 certified manufacturer with a long history in fuel system components and engine sensors. The company states its parts are produced to meet or exceed OEM standards and specifications, with engineering and technical support used to maintain application accuracy.