The Genuine VW / Audi Differential Service Kit - 178156 is a comprehensive kit of products designed for servicing the differential of a car. It includes various components that are essential for maintaining the proper functioning of the differential, which is responsible for transferring power from the engine to the wheels. The kit contains a variety of high-quality parts and fluids that are specifically designed for use in Volkswagen and Audi vehicles. These include gaskets, seals, and other necessary items for a complete differential service. The kit also includes specialized tools and instructions for performing the service, making it easy for car owners to do the job themselves. This kit is a reliable and convenient option for ensuring the optimal performance and longevity of the differential in VW and Audi cars.