Industrial Injection 12mm Gorilla Girdle w/ ARP Xl Main Studs

2003-2018 Cummins Gorilla Girdle W/ ARP XL Main Studs. This kit includes: 1 Gorilla Girdle, 14 top spacers (large hole), 12 bottom spacers (small hole), 1 rear main spacer bar, 2 rear main stud nuts (12 point), 12 main stud nuts (Nylock). Available in 12mm or 14mm. 14MM Kit will require a stamped oil pan. On certain 6.7L Cummins engines that come factory with a windage tray instead of a factory girdle you will be required to get the early style longer oil pickup tube bolts as well as an early style oil pickup tube. Cummins oil pickup tube part number: 3949692 (qty 1) Cummins oil pickup tube bolt part number: 3902460 (qty 2).