The Genuine VW / Audi Haldex Service Kit - 178367 is a comprehensive kit of products designed for servicing a specific part on a car, known as the Haldex system. This system is responsible for distributing power between the front and rear wheels of the car, providing better traction and control. The kit includes four essential components, which are necessary for maintaining the proper functioning of the Haldex system. These components include a filter, gasket, oil, and a drain plug. The filter helps to remove any impurities from the oil, ensuring that the system is not clogged or damaged. The gasket is used to create a tight seal between the Haldex system and the car, preventing any leaks. The oil is the main component of the kit and is responsible for lubricating the Haldex system, allowing it to function smoothly. Lastly, the drain plug is used to drain out the old oil from the system, making space for the new oil. This kit is specifically designed for VW and Audi cars, ensuring compatibility and high-quality performance.