ARP Cylinder Head Bolt Kit, High Performance Series, 12-Point Head, Chromoly, Black Oxide, Big Block Chevy (Bowtie / Dart / Afr / World)

High Performance head bolts are available with a reduced wrenching hex or 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180,000 psi (which is 15% stronger than Grade 8) and kits come complete with hardened parallel-ground washers.