The Hitachi High Pressure Fuel Pump Kit - 135925 is a comprehensive kit designed for use in cars. It includes a high pressure fuel pump, as well as other essential components for maintaining and optimizing fuel pressure within the vehicle. The kit contains three main components, including a fuel pump, a fuel pressure regulator, and a fuel filter. These components work together to ensure that the fuel system is functioning properly and delivering the correct amount of fuel to the engine. The kit is designed to be compatible with a wide range of car models and can be easily installed by a trained mechanic. With this kit, car owners can ensure that their vehicle's fuel system is running smoothly and efficiently.