The Hitachi Fuel Injector Kit - 135909 is a comprehensive set of products designed to service and maintain the fuel injectors in a car. It includes a variety of essential components such as fuel injectors, seals, o-rings, and gaskets. These parts are crucial for ensuring the proper functioning of the fuel delivery system in a car, which is responsible for supplying fuel to the engine. The kit is suitable for use in a wide range of car models and can help improve fuel efficiency, performance, and overall engine health. With the Hitachi Fuel Injector Kit - 135909, car owners can easily replace worn or damaged fuel injector parts and keep their vehicles running smoothly.