The Genuine VW / Audi Ignition Coil Kit - 178383 is a comprehensive kit designed for use in cars made by Volkswagen and Audi. It includes a set of high-quality ignition coils that are essential for the proper functioning of the vehicle's engine. These coils are responsible for providing the necessary electrical charge to the spark plugs, which in turn ignite the fuel and air mixture in the engine. The kit also includes other components such as spark plug wires, connectors, and mounting hardware, all of which are crucial for the efficient operation of the ignition system. By using this kit, car owners can ensure that their vehicle's ignition system is in top condition, leading to improved performance and fuel efficiency.