All-in-one kit for doing an injector install on an LB7 Duramax engine. Includes BD-Built stock replacement injectors (8) injector lines (8), valve cover gasket set, all required injector O-rings and seal washers, silicone sealant, and Permatex Red high-temp thread locker. Injectors are OE quality, assembled using OE procedures, and fully calibrated/tested to ensure perfect operation.