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 valvetrain removal when re-torqueing cylinder heads.

More From This Category

ARP Valve Cover Bolts, Stainless 12-Pt, Merlin Block BRO Head, 1/4 in.-20 x 4.000, 4 Pc

ARP Valve Cover Bolts, Stainless 12-Pt, Merlin Block BRO Head, 1/4 in.-20 x 4.000, 4 Pc

$36.81

ARP Header Studs, Stainless Hex, For Buick V6, 3.8L, Set of 12

ARP Header Studs, Stainless Hex, For Buick V6, 3.8L, Set of 12

$135.86

ARP Cylinder Head Stud, Pro-Series, 12-point Nut, For Chevrolet SB, 18 Raised Port, Kit

ARP Cylinder Head Stud, Pro-Series, 12-point Nut, For Chevrolet SB, 18 Raised Port, Kit

$473.30