The GB Remanufacturing Fuel Injector Kit - 473968 is a comprehensive kit designed for servicing and maintaining the fuel injection system of a car. It includes a set of fuel injectors, which are responsible for delivering the correct amount of fuel to the engine, ensuring optimal performance and fuel efficiency. The kit also contains O-rings, gaskets, and seals to prevent leaks and maintain a tight seal between the fuel injectors and the engine. Additionally, the kit includes a fuel injector cleaner, which helps remove any buildup or deposits that may be affecting the performance of the injectors. This kit is suitable for a wide range of car models and can help improve the overall functioning of the fuel injection system.