GBR 739-104 Diesel Fuel Injector Pump

Reman Diesel High Pressure Fuel Pump

GBR 739-104 is a remanufactured diesel high-pressure fuel pump for select Chevrolet Silverado 2500 HD, Silverado 3500, GMC Sierra 2500 HD, and Sierra 3500 applications. It is built for 2004-2005 trucks and remanufactured to meet or exceed OE specifications through bench testing and inspection.

Key Features

• Remanufactured high-pressure fuel pump for diesel fuel injection systems
• Completely torn down, ultrasonically cleaned, inspected, and rebuilt with premium components
• 100% tested on a flow bench under multiple operating parameters
• Direct application coverage for 2004-2005 Chevrolet Silverado 2500 HD and Silverado 3500
• Direct application coverage for 2004-2005 GMC Sierra 2500 HD and Sierra 3500
• Cross-references Bosch 0445020030 and 0986437308 for the same application

Product Details

The GBR Reman Diesel High Pressure Fuel Pump line focuses on restoring fuel delivery performance with a controlled remanufacturing process. Each pump is disassembled, cleaned with ultrasonic equipment, inspected, and rebuilt using premium components, then flow-tested across multiple operating conditions to verify output. Part number 739-104 is a practical OE-style replacement for diesel trucks that need consistent high-pressure fuel delivery in the fuel injection system.

Compatible With 2004-2005 Chevrolet Silverado 2500 HD, N/A; 2004-2005 Chevrolet Silverado 3500, N/A; 2004-2005 GMC Sierra 2500 HD, N/A; and 2004-2005 GMC Sierra 3500, N/A. This part number 739-104 is also referenced in interchange listings for select OE and aftermarket applications.

Common Issues This Pump May Address

• Hard starting caused by insufficient high-pressure fuel delivery
• Loss of engine power under load
• Fuel pressure irregularities in the injection system
• Driveability concerns related to inconsistent pump output
• Diagnostic trouble codes tied to fuel pressure performance

Installation Notes

Verify the vehicle application against the listed fitment and any applicable technical bulletin TB-0122-E before installation. Clean the fuel system thoroughly and inspect related components such as lines, filters, and injectors to help prevent contamination from affecting the replacement pump. Confirm all connections and system priming procedures are completed according to service information for the vehicle.

Quality Assurance

GBR remanufactures this pump using a teardown, ultrasonic cleaning, inspection, and flow-bench testing process to help ensure it meets or exceeds OE specifications. Part number 739-104 is tested under multiple operating parameters before release.