The Bosch Fuel Injector Reseal Kit - 140679 is a comprehensive kit designed for servicing fuel injectors in a car. It includes a set of products that help to reseal and maintain the fuel injectors, ensuring proper function and preventing leaks. The kit contains three essential components: a set of fuel injector seals, a fuel injector o-ring, and a fuel injector spacer. These products are designed to fit a wide range of car models and can be used for both gasoline and diesel engines. This kit is a cost-effective solution for repairing or maintaining fuel injectors and can help improve the overall performance and efficiency of a car's engine.