ARP 235-4102 – Cylinder Head 6pt Stud Kit, Professional Series, BBC Heads w/ Mark IV, Iron Blocks (5 long exhaust bolts per head)

Big Block Chevy, BMP, World Merlin early Merlin aluminum, Brodix -2,-4,-2X,-3X, Canfield, Holley, Big Duke w/ 5 long exhaust studs per head (All Black Oxide)

5 long exhaust bolts per head. Use on Mark IV blocks