Dorman 904-157 Fuel Injector Line - Supply

Fuel Injector Line for GM 6.6L Applications

This Dorman fuel injector line is a direct replacement for specific GM diesel applications that require a precise OE-style fuel delivery path. Built from steel with a silver zinc finish, Dorman 904-157 is engineered to match the original fit and routing on the listed vehicles.

It is a fuel injector feed line for the supply side and is designed for 2007-2010 Chevrolet Express 2500, Chevrolet Express 3500, Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, GMC Savana 2500, GMC Savana 3500, GMC Sierra 2500 HD, and GMC Sierra 3500 HD. This part cross-references 98006527 for the same application.

Key Features

• Direct replacement fuel injector line for specific Chevrolet and GMC diesel trucks and vans
• Steel construction with silver zinc finish for corrosion resistance
• Female inlet and outlet fittings with M14 x 1.5 and M18 x 1.5 metric coarse threads
• Built to match original fit and design on the listed applications
• Rated for high-pressure fuel system service up to 25000 PSI
• Fits supply-side routing for cylinders 2 and 7 on the confirmed applications

Detailed Description

Dorman 904-157 is a replacement fuel injector line for the fuel injection system on select 2007-2010 Chevrolet Express, Silverado HD, GMC Savana, and Sierra HD models. The line measures 5.75 inches in length and uses steel fittings and tubing to replicate the original configuration where precise fuel delivery is critical. With female M14 x 1.5 inlet threads and female M18 x 1.5 outlet threads, this injector feed line is built for the specified supply-side applications and supports high-pressure operation in demanding diesel fuel systems.

For buyers searching for a fuel injector line for 2007-2010 Chevrolet Silverado 2500 HD or GMC Sierra 3500 HD, Dorman 904-157 provides a vehicle-specific replacement option that aligns with the original design. It is also a practical choice for 2007-2010 Chevrolet Express 3500 and GMC Savana 2500 fuel system repair work where the factory line has failed, corroded, or no longer seals correctly.

What It Helps Fix

• Fuel leaks at the injector line connection points
• Hard starting caused by damaged or restricted injector feed lines
• Loss of fuel pressure in the supply circuit
• Corrosion or fatigue in the original steel line
• Incorrect fitment from non-OE-style replacement lines

Installation Notes and Tips

Verify the vehicle application, engine configuration, and cylinder location before installation. This line is listed for supply-side use on cylinders 2 and 7 for the confirmed Chevrolet Express, Chevrolet Silverado HD, GMC Savana, and GMC Sierra HD applications. Inspect the mating fittings and sealing surfaces carefully, and confirm the M14 x 1.5 and M18 x 1.5 thread sizes match the original hardware before tightening.

Because this is a high-pressure fuel injector line, cleanliness is important during service. Keep the fuel system free of debris, and follow the vehicle service procedure for proper routing and torque specifications.

Quality Assurance

Dorman replacement parts are engineered to match the fit and design of the original component on specific vehicles. Part number 904-157 is built for the listed GM applications and is intended to restore proper fuel line function in the fuel injection system.