Walker 255-1097 Fuel Injection Pressure Regulator

Fuel Pressure Control for GM Applications

Walker Products 255-1097 is a fuel injection pressure regulator for a wide range of GM trucks, vans, SUVs, and related platforms. It is built for direct replacement service on applications such as Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Astro, and GMC Safari.

Walker Products has supplied fuel system components since 1946 and manufactures to meet or exceed OEM standards and specifications. The Walker Products line focuses on fuel delivery and engine management parts backed by engineering, product management, and technical support.

Key Features

• Fuel injection pressure regulator for gasoline fuel delivery systems
• Walker Products part number 255-1097
• OE-style replacement for select Chevrolet, GMC, Cadillac, Oldsmobile, Isuzu, and GMC applications
• Application coverage includes 1996-2005 model years
• Cross-reference: Delphi FP10021 and Standard Ignition PR203

Detailed Description

This fuel injection pressure regulator helps maintain proper fuel pressure at the rail so the engine receives the fuel delivery it was calibrated for. It is a direct-fit replacement for many GM platforms, including Chevrolet Blazer, Chevrolet S10, GMC Sonoma, Chevrolet Tahoe, GMC Yukon, Cadillac Escalade, and Isuzu Hombre. Walker Products 255-1097 is also listed across multiple interchange numbers for broader catalog matching.

Compatible With 1996-2001 Chevrolet Astro, 1996-2002 Chevrolet Blazer, 1996-1999 Chevrolet C1500, 1996-2000 Chevrolet C2500, 1996-2000 Chevrolet C3500, 1996-1999 Chevrolet C1500 Suburban, 1996-1999 Chevrolet C2500 Suburban, 1996-2000 Chevrolet K2500, 1996-2000 Chevrolet K3500, 1996-1999 Chevrolet K1500, 1996-1999 Chevrolet K1500 Suburban, 1996-1999 Chevrolet K2500 Suburban, 1996-2000 Chevrolet Tahoe, 1996-2002 Chevrolet Express 1500, 1996-2002 Chevrolet Express 2500, 1996-2002 Chevrolet Express 3500, 1996-2002 Chevrolet S10, 1996-2005 Chevrolet Astro, 2003-2005 Chevrolet Blazer, 2003-2004 Chevrolet Express 1500, 2003-2004 Chevrolet Express 2500, 2003-2004 Chevrolet S10, 1999-2004 Chevrolet Silverado 1500, 1996-2001 GMC Jimmy, 1996-2001 GMC Safari, 1996-2002 GMC Savana 1500, 1996-2002 GMC Savana 2500, 1996-2002 GMC Savana 3500, 1996-2002 GMC Sonoma, 1999-2004 GMC Sierra 1500, 1996-2000 GMC Yukon, 2003-2004 GMC Savana 1500, 2003-2004 GMC Savana 2500, 2003-2004 GMC Sonoma, 2003-2004 GMC Sonoma, 2003-2004 Isuzu Ascender, and 1997-1999 Isuzu Hombre.

Common Problems This Part Addresses

• Fuel pressure that is too high or too low
• Hard starting after sitting
• Rough idle or hesitation under load
• Fuel smell or pressure-related drivability complaints
• Inconsistent fuel delivery on GM truck and van applications

Installation Notes and Tips

Verify the vehicle application by year, make, and model before ordering. Several listings note inclusion of an O-ring and retainer on specific applications, so compare the existing regulator and rail configuration before installation. Clean the fuel system connection points and inspect the sealing surfaces before fitting the new regulator.

Quality Assurance

Walker Products manufactures fuel system components to meet or exceed OEM standards and specifications. The company is ISO 9001 and IATF 16949 certified, with in-house engineering and technical support supporting product accuracy and application coverage.