Dorman 904-248 Diesel Glow Plug Wiring Harness - Left or Right

Reliable Diesel Glow Plug Wiring Harness for Ford Super Duty

The Dorman 904-248 Diesel Glow Plug Wiring Harness is designed specifically for Ford Excursion, F-250 Super Duty, and F-350 Super Duty models. This harness ensures proper electrical connectivity for your diesel glow plugs, supporting efficient engine starting in cold conditions.

• Length: 22 inches for precise fitment
• Color: Black for seamless integration
• Insulator Material: Durable PTFE for heat resistance
• Terminal Gender: Female terminals for secure connections
• Terminal Material: Copper/steel for reliable conductivity
• Wire Core Material: Tinned copper to prevent corrosion
• Wire Gauge: 14 gauge for optimal current flow
• Wire Quantity: 4 wires to match factory specifications
• Specific fitment for Ford Excursion, F-250 Super Duty, and F-350 Super Duty

Durable Construction and Precise Fitment

The Dorman 904-248 harness is engineered with high-quality materials to withstand the demanding environment of diesel engine compartments. The PTFE insulator provides excellent heat resistance, while the tinned copper wire cores ensure long-lasting corrosion protection. The 14-gauge wire size supports the necessary current for glow plug operation, and the female copper/steel terminals offer secure and stable connections. This harness is tailored specifically for Ford Excursion, F-250 Super Duty, and F-350 Super Duty models, ensuring a direct replacement that meets OEM standards.

Applications and Common Issues Addressed

• Restores proper electrical flow to diesel glow plugs
• Eliminates intermittent glow plug failures due to wiring faults
• Prevents engine starting difficulties in cold weather
• Replaces damaged or corroded wiring harnesses
• Supports consistent glow plug operation for improved engine performance

Installation Notes and Tips

Installation of the Dorman 904-248 harness requires basic automotive electrical knowledge. Ensure the vehicle’s ignition is off before beginning. Disconnect the battery to avoid electrical shorts. Carefully remove the old wiring harness and compare it to the new harness for correct length and terminal type. Connect the female terminals securely to the glow plugs and verify all connections are tight. Avoid sharp bends or pinching of wires during installation to maintain harness integrity.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications. The 904-248 Diesel Glow Plug Wiring Harness undergoes rigorous quality control to ensure durability and reliable performance. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship. Refer to Dorman’s official documentation for exact warranty terms.