The Genuine VW / Audi Ignition Coil Kit - 178408 is a comprehensive kit of products designed specifically for cars from the Volkswagen and Audi brands. This kit includes all the necessary components for the ignition coil system, which is responsible for providing the spark that ignites the fuel in the engine. The kit contains multiple ignition coils, which are essential for the proper functioning of the engine. It also includes other necessary components such as spark plugs, wiring harnesses, and other small parts that are crucial for the ignition system to work efficiently. This kit is designed to be used on a wide range of Volkswagen and Audi car models, making it a versatile and reliable choice for car owners. With this kit, car owners can ensure that their vehicle's ignition system is in top condition, providing smooth and reliable performance.