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Dorman 904-478 Fuel Injection Harness - Left
Fuel Injector Harness for Ford Super Duty
This Dorman fuel injector harness is a direct replacement for the original wiring on select Ford Super Duty diesel applications. Built to restore proper injector signal transfer, it uses quality materials and insulated electrical connectors to help resist corrosion in demanding underhood conditions.
Key Features
- Direct replacement fuel injector harness for OE fit and function
- Matches direct injection and pulse width modulation fuel injection systems
- Standard replacement grade for service repairs
- Black connectors with fully insulated electrical terminals
- 16-gauge wiring with 8-wire construction and 5 connectors
- Controls 4 fuel injectors
- Length: 12.5 in.
Detailed Description
Dorman 904-478 is a replacement fuel injector harness engineered for select Ford F-250 Super Duty and Ford F-350 Super Duty models. It is built to match the fit and function of the original equipment harness, helping restore injector communication and stable operation in the fuel injection system. This harness is intended for 2008-2010 Ford F-250 Super Duty, left, and 2008-2010 Ford F-350 Super Duty, left applications. The Dorman 904-478 part number is also referenced by 8C3Z9D930BA, 1856011C95, AP63516, and Standard Ignition IFH9 for the same application.
What It Helps Fix
- Intermittent injector signal loss
- Corrosion at injector connector terminals
- Damaged or brittle wiring in the injector circuit
- Rough running caused by poor electrical connection
- Fuel injection system faults related to harness wear
Installation Notes and Tips
Verify the vehicle side and position before installation. This harness is listed for the left side on 2008-2010 Ford F-250 Super Duty and 2008-2010 Ford F-350 Super Duty models. Compare connector style, wire count, and harness routing to the original part before service. Confirm direct injection and pulse width modulation system requirements match the vehicle configuration.
Quality Assurance
Dorman manufactures this harness as a standard replacement part using materials selected for service durability and connector protection. The insulated electrical connectors are designed to help reduce corrosion at the connection points and support reliable injector circuit performance.
| Brand | Dorman |
|---|---|
| Part Number | 904-478 |
| Connector Color | Black |
| Connector Gender | Male |
| Connector Quantity | 5 |
| Fuel Injection Metering Style | Pulse Width Modulation |
| Fuel Injection Style | Direct Injection |
| Heat Shield | No |
| Item Grade | Standard Replacement |
| Length | 12.5 |
| Number Of Fuel Injectors Controlled | 4 |
| Package Contents | 1 Fuel Injector Wiring Harness |
| Plug/Connector Type | Male |
| Wire Gauge Measurement | 16 |
| Wire Quantity | 8 |
This part fits 6 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2010 | Ford | F-250 Super Duty | 6.4L | V8 | Left | |
| 2010 | Ford | F-350 Super Duty | 6.4L | V8 | Left | |
| 2009 | Ford | F-250 Super Duty | 6.4L | V8 | Left | |
| 2009 | Ford | F-350 Super Duty | 6.4L | V8 | Left | |
| 2008 | Ford | F-250 Super Duty | 6.4L | V8 | Left | |
| 2008 | Ford | F-350 Super Duty | 6.4L | V8 | Left |
* 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.