ARP uses a premium grade 8740 alloy that is rated far superior to "aircraft" quality. Then, each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi.

Buick V6, Stage II, ARP 223-3700 12-Point Pro Series, Cylinder head bolts. Head bolts are available with a reduced wrenching 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing.

ARP's Professional Series head bolts deliver superior strength and meet the ARP "Zero Defect, Zero Failure" quality standard.

ARP uses a premium grade 8740 alloy that is rated far superior to aircraft quality. Each stud is placed vertically in special racks and precisely heat-treated to 200 000 psi.

ARP uses a premium grade 8740 alloy that is rated far superior to "aircraft" quality. Then, each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi.

Chevrolet Small Block Dart, Buick, Hex nuts, ARP Head Studs 234-4102ARP Chevy Small Block Head Studs Kits.: It is for good reason that virtually every top professional engine builder relies on ARP head studs for their all-out competition powerplants.

ARP uses a premium grade 8740 alloy that is rated far superior to aircraft quality. Each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi.

Chevrolet Small BlockDart Buick ARP 234-3709 12-Point Pro Series, Cylinder head bolts. Head bolts are available with a reduced wrenching 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing.