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6.5L GM Diesel Glow Plug Extension Harness (GM 15320904)

Glow Plug Extension Harness Connector for 1994 - 2002 6.5L GM Diesel




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1994 - 2002 6.5L GM diesel

Part Number(s):



Select 1994 to 2002 model year GMC/Chevrolet vehicles equipped with the 6.5L GM turbodiesel feature two of these glow plug harness extensions on the passenger side beneath the turbocharger. They are incorporated into the glow plug harness to increase the serviceability of the cylinder 3 and 5 glow plug connector harness because there are two heat shields attached to the exhaust manifold. This part of the glow plug harness is typically replaced with the glow plugs since the connectors tend to deteriorate. Please note that this item is sold individually and 2 are required per vehicle.

Glow plug extension harness location on 6.5L diesel

Glow plug extension harness location; passenger side of engine, cylinders 3 and 5 (middle cylinders), through the exhaust manifold heat shields


• Made in the USA using primarily USA made materials

• No cutting, no splicing; direct replacement part

• OEM quality guaranteed - produced from OEM connectors and Military spec, aircraft grade wire

• High temperature wire sleeve

• Replaces GM 15320904, Dorman 645519, and Alliant Power AP0067

Application Notes

1994 - 2002 Chevrolet Silverado 1500/2500/3500/C3500HD (6.5L diesel)
1994 - 1999 Chevrolet Suburban/Tahoe (6.5L diesel)
1994 - 2002 GMC Sierra 1500/2500/3500/C3500HD (6.5L diesel)
1994 - 1999 GMC Yukon (6.5L diesel)

Additional Details



Part Number:


Alternative Part Number(s):

GM 15320904
Alliant Power AP0067
Dorman 645519




1 year, unlimited mileage

Shipping Weight:

5 oz

Estimated Delivery:

3 - 5 business days

Domestic shipping: This items ships for FREE to any address within the continental United States. Orders received by 2:00 pm PST are typically processed and shipped same day, Mon - Fri. Orders received after 2:00 pm PST or on weekends are shipped the following business day. Items are shipped to your confirmed PayPal address.

International shipping: We currently do not offer shipping outside of the United States and its territories.

Return Policy: Customer satisfaction is our highest priority. Unused, unopened products may be returned hassle free within 30 days. To initiate a return or for any additional customer service related questions, please contact us.