The Beru Ignition Service Kit - 135166 is a comprehensive kit designed to service the ignition system of a car. It includes a variety of essential components that are necessary for maintaining and improving the performance of a car's ignition system. The kit contains four main products, including spark plugs, ignition wires, distributor cap, and ignition coil. Each of these products is crucial for the proper functioning of the ignition system and helps to ensure that the car starts smoothly and runs efficiently. This kit is suitable for a wide range of car models and makes, and it is an ideal choice for those looking to maintain their car's ignition system.