Genuine OEM Audi Glow Plug Rail Wiring Harness, part number 045971782A. This electrical component is designed to connect the glow plugs to the vehicle's main electrical system. It ensures proper power delivery to the glow plugs, which are essential for starting diesel engines in cold weather. Weighing approximately 0.153 kg, this harness is built to factory specifications. Choosing a genuine OEM harness guarantees correct electrical connections, insulation integrity, and resistance to engine bay conditions, preventing misfires or starting issues.