The Bosch Ignition Coil Service Kit - 140701 is a comprehensive kit designed to help maintain and service the ignition coil system of a car. It includes various products that are essential for ensuring the proper functioning of the ignition coil and improving the overall performance of the vehicle. The kit contains a set of ignition coils, spark plugs, and ignition wires, which are all crucial components of the ignition system. These parts work together to provide the necessary spark that ignites the fuel in the engine and powers the vehicle. The kit also includes an ignition coil tester, which is used to diagnose any issues with the ignition coil and ensure it is functioning correctly. With this service kit, car owners can easily replace and maintain their ignition coils, ensuring their vehicle runs smoothly and efficiently.