Dorman 904-478 Fuel Injection Harness - Left

Reliable Fuel Injection Harness for Ford Super Duty Trucks

The Dorman 904-478 fuel injection harness is designed specifically for Ford F-250 Super Duty and F-350 Super Duty models. This direct injection wiring harness ensures precise pulse width modulation control for up to four fuel injectors, maintaining optimal engine performance.

• Length: 12.5 inches for proper fitment
• Wire gauge: 16 AWG for reliable current flow
• Connector color: Black for easy identification
• Wire quantity: 8 wires to support multiple injector connections
• Connector quantity: 5 male connectors for secure attachment
• Fuel injection style: Direct injection with pulse width modulation metering
• Standard replacement grade for dependable operation

Technical Details and Compatibility

This fuel injection harness from Dorman is engineered to meet the electrical demands of Ford F-250 Super Duty and F-350 Super Duty trucks equipped with direct fuel injection systems. The harness features 16-gauge wiring and five male connectors, supporting four fuel injectors with pulse width modulation control. At 12.5 inches in length, it provides an exact fit without excess slack or tension. The black connectors simplify installation and maintenance by providing clear visual cues.

Common Applications and Problem Resolution

• Replaces damaged or worn fuel injector wiring harnesses
• Resolves intermittent injector firing issues caused by faulty wiring
• Eliminates electrical shorts or open circuits in fuel injector connections
• Restores proper pulse width modulation signals for direct injection systems
• Prevents engine misfires related to wiring harness failures

Installation Notes and Tips

Before installation, disconnect the vehicle battery to prevent electrical shorts. Ensure all connectors are clean and free of corrosion. Route the harness carefully to avoid contact with hot engine components, as this harness does not include a heat shield. Secure the wiring with appropriate clips or ties to prevent movement and wear. Verify all connections are fully seated and locked before reconnecting the battery and testing the system.

Quality Assurance and Warranty

The Dorman 904-478 fuel injection harness is manufactured to meet OEM standards for fit and function. It is a standard replacement grade part designed for durability and reliable performance in Ford F-250 Super Duty and F-350 Super Duty trucks. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship.