The Genuine VW / Audi Coil Spring Isolator Kit - 178107 is a comprehensive set of products designed for use in a car. It contains various components that work together to provide support and stability to the coil springs of the vehicle. The kit includes two coil spring isolators, which are rubber or polyurethane pieces that sit between the coil spring and the vehicle's chassis. These isolators help to reduce noise and vibrations, as well as prevent metal-to-metal contact between the spring and the chassis.

In addition to the coil spring isolators, the kit also contains two dust covers, which are protective rubber or plastic covers that fit over the top of the coil springs. These covers help to keep dirt and debris from entering the coil springs, which can cause damage and affect the performance of the suspension system.

The kit also includes two coil spring seats, which are metal or plastic components that sit on top of the coil spring and provide a surface for the spring to rest on. These seats help to distribute the weight of the vehicle evenly on the spring and prevent it from shifting or becoming misaligned.

Lastly, the kit includes two bump stops, which are rubber or polyurethane pieces that sit at the bottom of the coil spring and help to absorb shocks and impacts from the road. These bump stops also help to prevent the coil spring from compressing too much, which can cause damage to the suspension system.

Overall, the Genuine VW / Audi Coil Spring Isolator Kit - 178107 is a complete package of essential components that work together to ensure the proper functioning and longevity of the coil springs in a car.