Have a lid spacer and still want to run the engine beauty covers? Sold in a set of 5 in a variety of lengths, with 10mm worth of M6 threads on the bottom side just like the stock studs. Both the ZL1 lid and the CTS-V lid use the same stud set. Can be anodized as well for a small fee. If you need a custom length, quantity, or color, please contact us before ordering!!! We can also make these in any length needed, but contact us for special orders.
Stock studs are GM PN 11589406 for the 4 studs that hold down the fuel rails. The snout stud is GM PN 11588967. They MAY fit other applications, such as LS7 engine covers. The overall length of a STOCK stud from the bottom of the hex base to the top of the stud is:
Short 8mm Ball Studs: 29mm
Long 10mm Ball Stud: 39mm