AUS Injection MP-50101 Remanufactured Fuel Injector - Chevrolet/GMC With 7.4L V8 Engine Remanufactured In the USA All units are 100% factory tested before packaging Clean injectors provide better gas milage and increase overall performance All injectors are lubricated prior to packaging ensuring a trouble free installation All injectors are backed by a 12 month 12,000 mile warranty