ARP main studs kit for all IRON blocks

ARP Main studs kit for all IRON blocks 4.6/5.4 Helps locate the main block caps better for more durability and performance in high HP applications.Balck Oxide Finish, 12pt head, Re-usable FACTORY BOLTS CANNOT BE RE-USED (they are a torque to yield style) and must be replaced everytime they are removed. Includes all 10 Studs, washers and 12 pt nuts with ARP moly lube.