HomeIgnition > Secondary IgnitionDorman 904-091 Diesel Glow Plug Wiring Harness
Part #: 904-091

Dorman 904-091 Diesel Glow Plug Wiring Harness

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⚙️ 18 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Volkswagen, Beetle, Golf, Jetta, and Passat
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Reliable Diesel Glow Plug Wiring Harness for Volkswagen Models

The Dorman 904-091 Diesel Glow Plug Wiring Harness is designed specifically for select Volkswagen vehicles, including the Beetle, Golf, Jetta, and Passat. Engineered to meet precise fitment requirements, this harness ensures consistent electrical connectivity for your diesel glow plugs.

  • Length: 15.5 inches for optimal routing
  • Black EPDM rubber distributor boots for durability and heat resistance
  • Two copper conductor wires with 14-gauge thickness for reliable current flow
  • Plastic insulator and cable jacket materials for protection against wear
  • Male blade terminals made of copper/steel for secure connections
  • Specific fitment for Volkswagen Beetle, Golf, Jetta, and Passat diesel models

Durable Construction and Precise Fitment

This Dorman diesel glow plug wiring harness features a robust design with copper wire cores and copper/steel blade terminals to maintain strong electrical conductivity. The black EPDM rubber distributor boots provide resistance to heat and environmental factors, while the plastic insulator and cable jacket protect the wiring from abrasion and damage. With a length of 15.5 inches and an outside diameter of 0.5 inches, the harness is tailored for a specific fit on Volkswagen diesel engines, ensuring proper installation and function.

Compatible Volkswagen Diesel Models

This wiring harness is compatible with Volkswagen Beetle, Golf, Jetta, and Passat diesel models. It is engineered to replace the original glow plug wiring harness, restoring reliable ignition system performance and helping maintain efficient cold starts.

  • Eliminates intermittent glow plug failures
  • Prevents electrical shorts and open circuits
  • Resolves issues with cold engine starting
  • Reduces risk of glow plug overheating
  • Restores proper voltage delivery to glow plugs

Installation Notes and Tips

When installing the Dorman 904-091 harness, ensure the vehicle is turned off and the battery is disconnected to avoid electrical hazards. Carefully route the harness along the original wiring path to prevent contact with hot engine components. Verify that the male blade terminals are securely connected to the glow plugs and distributor boots. Inspect the EPDM rubber boots for proper seating to maintain protection against moisture and contaminants.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications, providing dependable performance for your Volkswagen diesel vehicle. The 904-091 Diesel Glow Plug Wiring Harness undergoes rigorous quality control to ensure durability and fitment accuracy. Please refer to Dorman's warranty policy for specific coverage details.

BrandDorman
Part Number904-091
Boot ColorBlack
Boot MaterialRubber
Cable Jacket MaterialPlastic
ColorBlack
Conductor MaterialCopper
Distributor Boot ColorBlack
Distributor Boot MaterialEPDM Rubber
Insulator MaterialPlastic
Length15.5
Outside Diameter0.5
Package Contents1 Glow Plug Harness
Plug Terminal Quantity2
RFI SuppressionNo
Resistor TypeNo
Terminal GenderMale
Terminal MaterialCopper/Steel
Terminal TypeBlade
Universal Or Specific FitSpecific
Wire Core MaterialCopper
Wire Gauge Measurement14

This part fits 18 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2003VolkswagenBeetle1.9LL4DIESELN/Aw/RPO Code QG1 (Extended Service Interval)
2002VolkswagenBeetle1.9LL4DIESELN/Aw/RPO Code QG1 (Extended Service Interval)
2001VolkswagenBeetle1.9LL4DIESELN/A
2001VolkswagenGolf1.9LL4DIESELN/A
2001VolkswagenJetta1.9LL4DIESELN/A
2000VolkswagenBeetle1.9LL4DIESELN/A
2000VolkswagenGolf1.9LL4DIESELN/A
2000VolkswagenJetta1.9LL4DIESELN/A
1999VolkswagenBeetle1.9LL4DIESELN/A
1999VolkswagenGolf1.9LL4DIESELN/A
1999VolkswagenJetta1.9LL4DIESELN/A
1998VolkswagenBeetle1.9LL4DIESELN/A
1998VolkswagenGolf1.9LL4DIESELN/A
1998VolkswagenJetta1.9LL4DIESELN/A
1997VolkswagenGolf1.9LL4DIESELN/A
1997VolkswagenJetta1.9LL4DIESELN/A
1997VolkswagenPassat1.9LL4DIESELN/A
1996VolkswagenPassat1.9LL4DIESELN/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:

028971766

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.