The Genuine VW/Audi Timing Chain Kit - 178685 is a comprehensive kit designed for servicing the timing chain of a vehicle. It includes a variety of essential components to ensure the proper functioning of the timing chain system. The kit contains 13 items, each specifically chosen to provide the necessary parts for a complete timing chain replacement. These items include a timing chain, tensioner, guide rails, sprockets, seals, gaskets, and other related hardware. The kit is designed for use with both VW and Audi vehicles, ensuring compatibility and reliable performance. It is a genuine product, meaning it is made by the original manufacturer and meets the highest quality standards. This timing chain kit is a crucial component for maintaining the smooth operation of a vehicle's engine and should be used as recommended by the vehicle's manufacturer.