2018 ARP Catalog rev3

52 800-826-3045 Red part numbers indicate new items HEAD BOLTS Application High Performance Pro Series Stainless Hex 12-Point Hex 12-Point Hex 12-Point AUDI - SEE VOLKSWAGEN, PAGE 56 AMC 258 cid inline 6 with 1/2˝ bolts, all same length 112-3601 290-343-390 cid (1969 and earlier) 7/16˝ 114-3601 290-343-390 cid (1969 and earlier) with Edelbrock heads 7/16˝ 114-3605 304-360-390-401 cid (1970 & later) 1/2˝ 114-3602 304-360-390-401 cid (1970 & later) with Edelbrock heads 1/2˝ 114-3604 401 cid with Indy heads 114-3603 BUICK V6 Stage I (1977-85) 123-3601 123-3701 223-3701 423-3601 423-3701 V6 Grand National and T-Type (1986-87) 123-3603 123-3703 223-3703 V6 with 1986-87’ block and GN1 Champion heads 223-3705 V6 Stage II 223-3700 HIGH PERFORMANCE SERIES 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. PROFESSIONAL SERIES All Pro Series bolts are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining, and meet the ARP “ZERO defect – ZERO failure” quality standard. ARP Pro Series head bolt kits are application specific and designed to deliver superior strength typically associated with competition engines. Pro Series kits are available in standard (8740) 190,000 psi tensile strength material and proprietary (ARP2000®) 220,000 psi tensile strength material where noted. All Pro Series head bolts have a reduced wrenching hex or 12-point head and wide area flange to permit the use of larger diameter valve springs and eliminate the need for valve train removal during cylinder head retorquing. Hardened parallel-ground washers are included in each kit. Most appli- cations have undercut short bolts that can help eliminate head gasket failures through providing more “stretch” to compensate for the additional compression of gaskets. CYLINDER HEAD BOLTS