OE Quality
60-Day Returns

Dorman 502-513 Fuel Injector
Reliable Diesel Fuel Injector for Chevrolet and GMC Trucks
The Dorman 502-513 fuel injector is engineered for direct injection diesel engines, designed to restore optimal fuel delivery in heavy-duty Chevrolet and GMC trucks. This injector is compatible with multiple models including Silverado 2500 HD and Sierra 3500, ensuring precise fuel atomization and engine performance.
- Maximum outside diameter: 21 mm for precise fitment
- Fuel type: Diesel, suitable for direct injection systems
- Blade terminal type with 2 male terminals for secure electrical connection
- Includes one gasket or seal and one O-ring for leak prevention
- Steel body material for durability under high pressure
- Attachment method: clip (mounting hardware not included)
- Package contains one fuel injector
Detailed Product Description
The Dorman 502-513 fuel injector is specifically designed for diesel-powered Chevrolet and GMC trucks such as the Express 2500, Savana 3500, and Silverado 3500 HD Classic. Constructed with a steel body, this injector withstands the demanding conditions of direct fuel injection systems. The injector features a blade terminal type with two male terminals, ensuring a reliable electrical connection. It comes with a gasket or seal and an O-ring to maintain a tight seal and prevent fuel leaks. The clip attachment method allows for secure installation, although mounting hardware is not included. This injector supports direct injection fuel delivery, which is critical for efficient combustion and engine performance in diesel engines.
Compatible Vehicles and Applications
- Chevrolet Express 2500 and 3500 diesel models
- GMC Savana 2500 and 3500 diesel models
- Chevrolet Silverado 2500 HD, 3500, and their Classic variants
- GMC Sierra 2500 HD, 3500, and Classic models
Common Issues Addressed by This Fuel Injector
- Engine misfires or rough idling in diesel trucks
- Reduced fuel efficiency and power output
- Fuel leaks due to worn seals or O-rings
- Inconsistent fuel delivery affecting engine performance
- Check engine light related to fuel injection faults
Installation Notes and Tips
When installing the Dorman 502-513 fuel injector, ensure the gasket or seal and O-ring are properly seated to prevent leaks. Use the clip attachment method to secure the injector in place. Since mounting hardware is not included, retain original components or source compatible hardware separately. Verify electrical connections to the blade terminals are secure and free of corrosion for optimal injector operation.
Quality Assurance and Warranty
Dorman fuel injectors are manufactured to meet or exceed OEM specifications, providing reliable performance for diesel fuel injection systems. This product includes a gasket or seal and O-ring to ensure proper sealing. Please refer to Dorman's warranty policy for specific coverage details.
| Brand | Dorman |
| Part Number | 502-513 |
| Maximum Outside Diameter | 21 |
| Fuel Type | Diesel |
| Terminal Type | Blade |
| Mounting Hardware Included | No |
| Gasket Or Seal Included | Yes |
| Terminal Quantity | 2 |
| Connector Gender | Male |
| Terminal Gender | Male |
| O-Ring Quantity | 1 |
| Attachment Method | Clip |
| Body Material | Steel |
| Retainer Clips Included | No |
| Fuel Injection Type | Direct injection |
| Package Contents | 1 injector |
This part fits 20 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2007 | Chevrolet | Express 2500 | 6.6L | V8 | N/A | |
| 2007 | Chevrolet | Express 3500 | 6.6L | V8 | N/A | |
| 2007 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | N/A | |
| 2007 | Chevrolet | Silverado 2500 HD Classic | 6.6L | V8 | N/A | |
| 2007 | Chevrolet | Silverado 3500 Classic | 6.6L | V8 | N/A | |
| 2007 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | N/A | |
| 2007 | GMC | Savana 2500 | 6.6L | V8 | N/A | |
| 2007 | GMC | Savana 3500 | 6.6L | V8 | N/A | |
| 2007 | GMC | Sierra 2500 HD | 6.6L | V8 | N/A | |
| 2007 | GMC | Sierra 2500 HD Classic | 6.6L | V8 | N/A | |
| 2007 | GMC | Sierra 3500 Classic | 6.6L | V8 | N/A | |
| 2007 | GMC | Sierra 3500 HD | 6.6L | V8 | N/A | |
| 2006 | Chevrolet | Express 2500 | 6.6L | V8 | N/A | |
| 2006 | Chevrolet | Express 3500 | 6.6L | V8 | N/A | |
| 2006 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | N/A | |
| 2006 | Chevrolet | Silverado 3500 | 6.6L | V8 | N/A | |
| 2006 | GMC | Savana 2500 | 6.6L | V8 | N/A | |
| 2006 | GMC | Savana 3500 | 6.6L | V8 | N/A | |
| 2006 | GMC | Sierra 2500 HD | 6.6L | V8 | N/A | |
| 2006 | GMC | Sierra 3500 | 6.6L | V8 | N/A |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.