High Performance Series cylinder head bolts are a premium replacement for OEM fasteners
Bolts are 180,000 psi, which is 15% stronger than Grade 8 hardware
Wide area flanged head eliminates the need for valve train removal to facilitate cylinder head retorquing
Features reduced wrenching hex style heads
Comes complete with hardened parallel-ground washers
ARP High Performance series head bolt kits are tough. They are rated at 180,000 psi--15 percent stronger than Grade 8 fasteners. They come available with a reduced wrenching hex head or 12-point head that help eliminate the need for valve train removal when re-torqueing cylinder heads.