The Bosch Fuel Injector Kit - 140667 is a comprehensive set of products designed to service a car's fuel injection system. The kit includes a variety of components such as fuel injectors, seals, o-rings, and other necessary parts for proper installation and maintenance of the fuel injectors. These products are essential for ensuring the proper functioning of the fuel injection system, which is responsible for delivering fuel to the engine for combustion. The kit is designed to be compatible with a variety of car makes and models, providing a convenient and reliable solution for fuel injector maintenance.