Positive Battery/Alternator/Starter Cable Harness for 2005 Audi Allroad Quattro, OEM Part Number 4Z7971225E. This wire harness is crucial for connecting the positive terminal of the battery to the alternator and starter, ensuring efficient power distribution. Commonly, this part addresses issues related to poor electrical connections, starting failures, and charging system malfunctions. Designed specifically for the 4.2L engine, it guarantees a precise fit and optimal performance. Also known as "wireharnes," this harness may interchange with part number 4B1803123. Ensure reliable functionality in your Audi with this essential component.