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 Header Bolts, 12-Point Head, 30mm UHL, Stainless Steel, Polished, For Chrysler, For Dodge, Ram, 5.7L, 6.1L, Set of 16

ARP Header Bolts, 12-Point Head, 30mm UHL, Stainless Steel, Polished, For Chrysler, For Dodge, Ram, 5.7L, 6.1L, Set of 16

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ARP Header Bolts, Hex Head, Stainless Steel, Polished, 3/8 in.-16, For Oldsmobile, 330-455, Set of 14

ARP Header Bolts, Hex Head, Stainless Steel, Polished, 3/8 in.-16, For Oldsmobile, 330-455, Set of 14

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