The Beru Ignition Tune-Up Kit - 135176 is a comprehensive kit designed to improve the performance and efficiency of a car's ignition system. It includes three essential components: a spark plug set, an ignition coil, and a distributor cap. The spark plug set contains multiple spark plugs, which are crucial for creating the spark needed to ignite the fuel and air mixture in the engine. The ignition coil is responsible for converting the battery's low voltage into the high voltage needed to create the spark. The distributor cap is a crucial component that helps distribute the high voltage from the ignition coil to the correct spark plug. Together, these products work to ensure that the car's engine runs smoothly and efficiently. This kit is suitable for a wide range of car models and is an essential tool for maintaining a well-functioning ignition system.