New GM cover stud kit. This listing is for 4 studs that mount the supercharge plastic engine cover to the engine. There are 3 different sizes, 4 studs in total. The short stud is the front most stud, the longest stud mounts on the LH Valve cover, while the 2 middle size studs mount on the LH fuel rail boss. This kit ONLY works on the factory LS9 Corvette superchargers, the studs for the LSA chargers are different, and listed in a different listing. For individual studs, view our other listings. Fits the following: