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.

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ARP Cylinder Head Bolts, 12-point Head, High Performance, For Chevrolet BB, Mark V or Mark VI Block, late Bowtie, AFR & Heads, Kit

ARP Cylinder Head Bolts, 12-point Head, High Performance, For Chevrolet BB, Mark V or Mark VI Block, late Bowtie, AFR & Heads, Kit

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ARP Header Bolts, Hex Head, 5/16 in. Wrench, Custom 450, Black Oxide, 3/8 in.-16, 0.750 in. UHL, Set of 12

ARP Header Bolts, Hex Head, 5/16 in. Wrench, Custom 450, Black Oxide, 3/8 in.-16, 0.750 in. UHL, Set of 12

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ARP Cylinder Head Bolts, 12-point Head, Stainless, For Chevrolet SB, 23 Cast iron OEM, Kit

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ARP Rocker Arm Studs, High Performance, 3/8 in.-24 Thread, 1.75 in. Effective Stud Length, Kit

ARP Rocker Arm Studs, High Performance, 3/8 in.-24 Thread, 1.75 in. Effective Stud Length, Kit

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