Cylinder Head Bolt Kit for Chevrolet 18° standard port

Cylinder Head Bolt Kit for Chevrolet 18° standard portAll Pro Series bolts are cold forged to ensure molecular integrity, heat treated prior to thread rolling and machining, and meet theARP ZERO defect ZERO failure quality standard. ARP Pro Series head bolt kits are application specific and designed to deliversuperior strength typically associated with competition engines. Pro Series kits are available in standard (8740) 190,000 psi tensilestrength material and proprietary (ARP2000) 220,000 psi tensile

They run-in straight and true

ARP has designed an extra heavy-duty shaft that will provide you with the necessary reliability

which requires less energy to operate

rated at 190

Most applicationshave undercut short bolts that can help eliminate head gasket failures through providing more “stretch” to compensate for theadditional compression of gaskets

Material 2: Custom Age 625+

Specially drilled “NASCAR” models are available for those who wish to safety wire their header bolts to prevent loosening

This helps prevent blown head gaskets

That’s whythe fastener experts at ARP have developed special bolts that are far superior to OEM hardware

Whether you’re mounting your fan directly to the water pump

A true high performance washer from ARP

All Pro Series head bolts have are 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