Dorman 645-519 Diesel Glow Plug Wiring Harness

Diesel Glow Plug Wiring Harness for GM Trucks

Dorman 645-519 is a direct replacement diesel glow plug wiring harness for specific Chevrolet and GMC applications. It is built to match the original harness fit and function, using durable materials for dependable electrical connection and cold-start performance.

Key Features

• Direct replacement for the original glow plug wiring harness
• Specific fit for selected Chevrolet and GMC diesel applications
• Black and white harness with plastic insulator and cable jacket
• Copper wire core with 20-gauge wire construction
• Male and female pin terminals made from tin brass with tin plating
• 11.81-inch length for OE-style routing and connection
• Part number 645-519 for easy identification

Detailed Description

This Dorman glow plug wiring harness is engineered for diesel engine service where the original harness has worn, damaged, or lost reliable electrical continuity. It is a specific-fit replacement that follows the original equipment layout, helping restore proper glow plug circuit operation on applications such as Chevrolet C1500, K1500, Tahoe, Express 2500, and GMC K2500, Savana 3500, and Yukon diesel models. The harness uses copper conductors, pin-style terminals, and plastic insulation to support consistent connection quality in demanding underhood conditions. If you are searching for a Dorman 645-519 glow plug harness for a Chevrolet or GMC diesel truck or van, this part is built for that service need.

This part cross-references GM 15320904 for the same application.

What It Helps Address

• Hard starting in cold weather
• Glow plug circuit faults that trigger a check engine light
• Intermittent or weak electrical connection at the glow plug harness
• Damage from heat, age, or vibration in the original wiring
• Restoration of proper glow plug signal delivery on diesel engines

Installation Notes and Tips

Verify connector style, harness length, and vehicle application before installation. This is a specific-fit harness, so routing and terminal orientation should match the original equipment layout. Inspect related glow plugs and connectors for corrosion, heat damage, or broken terminals before completing the repair. Confirm compatibility for your exact Chevrolet or GMC diesel model year, since fitment varies by platform.

Quality Assurance

Dorman manufactures this replacement harness to match OE fit and function using quality materials for durability and reliable performance. It is intended as a service replacement for the original glow plug wiring harness on listed Chevrolet and GMC diesel applications.