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Dorman 502-552 Diesel Fuel Injector Pump
| Brand | Dorman 502-552 |
|---|---|
| Connector Gender | Female |
| Connector Quantity | 1 |
| Gasket Or Seal Included | Yes |
| Mounting Hardware Included | No |
| Package Contents | 1 Pump |
| Port Quantity | 3 |
| Pump Type | Mechanical |
| Terminal Gender | Male |
| Terminal Quantity | 2 |
| Terminal Type | Blade |
| Wire Quantity | 0 |
| Wiring Harness Included | No |
| Fits | Chevrolet and GMC · 8 vehicles |
Thoroughly remanufactured. Critical components are replaced, clearances verified, and each pump is tested.
Mechanical pump. Delivers dependable fuel injection performance with a simple, proven design.
Gasket included. Ready for installation with a seal provided in the package.
Cross-references GB 739-104, Standard Ignition IP23 and 97303762 for the same application. See all 4.
Dorman 502-552 Diesel Fuel Injector Pump
This Dorman diesel fuel injector pump is remanufactured for dependable fuel delivery in compatible Chevrolet Silverado 2500 HD, Silverado 3500, GMC Sierra 2500 HD, and Sierra 3500 diesel applications. Built for 2004-2005 trucks, part number 502-552 is a direct-fit mechanical pump solution for restoring injection system performance.
Key Features
- Remanufactured diesel fuel injection pump for mechanical fuel systems
- Critical internal components are replaced during the remanufacturing process
- Clearances are verified after cleaning, reassembly, and testing
- Female connector with 1 connector, 2 male terminals, and blade terminal type
- Includes a gasket or seal for installation
- 3-port pump configuration
- Cross-references Standard Ignition IP23 for the same application
Detailed Description
Dorman 502-552 is a remanufactured diesel fuel injector pump engineered for 2004-2005 Chevrolet Silverado 2500 HD, 2004-2005 Chevrolet Silverado 3500, 2004-2005 GMC Sierra 2500 HD, and 2004-2005 GMC Sierra 3500 models. The pump is rebuilt using a controlled process that replaces critical wear components and verifies internal clearances after assembly and testing. For diesel trucks that rely on a mechanical pump, this part number 502-552 provides a service replacement focused on fuel delivery consistency and system restoration.
What It Helps Address
- Hard starting caused by weak or inconsistent fuel injection pump output
- Loss of fuel delivery pressure in a mechanical diesel system
- Rough running related to worn pump internals
- Fuel system performance issues on Silverado 2500 HD and Sierra 3500 diesel trucks
- Injection pump replacement needs during diesel fuel system repair
Installation Notes and Tips
Verify vehicle application by year, make, and model before installation. This pump uses a female connector, blade terminals, and a mechanical pump design, so connector style and fuel system configuration should be matched to the original unit. A gasket or seal is included; mounting hardware is not listed as included. For best results, inspect related fuel system components and confirm clean fuel supply before returning the vehicle to service.
Quality Assurance
This Dorman pump is remanufactured through an exclusive process that focuses on quality and reliability. After cleaning and reassembly, critical dimensions are checked and the unit is tested to help ensure proper operation in compatible Chevrolet and GMC diesel applications.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2005 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | N/A | — |
| 2005 | Chevrolet | Silverado 3500 | 6.6L | V8 | N/A | — |
| 2005 | GMC | Sierra 2500 HD | 6.6L | V8 | N/A | — |
| 2005 | GMC | Sierra 3500 | 6.6L | V8 | N/A | — |
| 2004 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | N/A | — |
| 2004 | Chevrolet | Silverado 3500 | 6.6L | V8 | N/A | — |
| 2004 | GMC | Sierra 2500 HD | 6.6L | V8 | N/A | — |
| 2004 | GMC | Sierra 3500 | 6.6L | V8 | N/A | — |
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