The Genuine VW / Audi Haldex Service Kit - 178366 is a comprehensive kit of products specifically designed for servicing the Haldex system in a car. The Haldex system is a type of all-wheel drive system commonly found in Volkswagen and Audi vehicles. This kit includes four different components, each essential for properly maintaining the Haldex system. The contents of the kit are a Haldex filter, Haldex oil, Haldex gasket, and Haldex drain plug. The Haldex filter is responsible for removing any debris or contaminants from the Haldex oil, ensuring the system runs smoothly. The Haldex oil is the lubricant that keeps the Haldex system functioning properly. The Haldex gasket provides a tight seal for the system, preventing any leaks. Lastly, the Haldex drain plug allows for easy draining of old oil during the servicing process. This kit is specifically designed for VW and Audi vehicles, making it a reliable and trustworthy choice for maintaining the Haldex system in these cars.