The Genuine VW / Audi Ignition Coil Kit - 178405 is a comprehensive set of products designed for use in a car's ignition system. This kit includes a variety of components that are essential for ensuring proper ignition and combustion in the engine. The contents of the kit may vary, but typically include ignition coils, spark plugs, and other related parts. These components work together to provide a reliable and efficient spark, which is crucial for starting and running a car's engine. This kit is specifically designed for use in Volkswagen and Audi vehicles, but may also be compatible with other makes and models. It is a high-quality and genuine product, ensuring optimal performance and longevity for the car's ignition system.