The Genuine BMW Ignition Tune Up Kit - 474315 is a comprehensive set of products designed to improve the performance and efficiency of a car's ignition system. The kit includes various components such as spark plugs, spark plug wires, distributor cap, and rotor, all of which are essential for the proper functioning of the ignition system. These products are specifically designed to fit BMW cars and are made with high-quality materials to ensure durability and long-lasting performance. The kit is ideal for routine maintenance and tune-ups, as it contains all the necessary components to keep the ignition system running smoothly. With this kit, car owners can expect improved engine starting, smoother idling, and better fuel efficiency.