The Hitachi Fuel Injector Kit - 135922 is a comprehensive kit designed for servicing fuel injectors in a car. It includes a variety of products that are necessary for maintaining and improving the performance of a car's fuel injectors. The kit contains multiple fuel injectors, as well as related components such as seals, gaskets, and O-rings. These parts are essential for ensuring proper fuel delivery and preventing leaks. The kit also includes a fuel injector cleaner, which helps to remove buildup and improve fuel flow. Additionally, the kit may include specialized tools for installation and maintenance of the fuel injectors. This kit is a convenient and efficient solution for keeping a car's fuel injectors in top condition.