ARP stainless steel intake manifold bolts are 15 percent stronger than Grade 8 steel bolts and have a wide-area flange for better load distribution. They also have precision-rolled threads, which prevent galling and promote more consistent torque loading. These bolts are both corrosion and heat-resistant and come highly polished. Bolts are available in both hex head and 12-point types, and washers are included.

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ARP Bolts, 12-Point Head, Stainless 300, Polished, 5/16 in.-18 RH Thread, 3.250 in. UHL, Set of 5

ARP Bolts, 12-Point Head, Stainless 300, Polished, 5/16 in.-18 RH Thread, 3.250 in. UHL, Set of 5

$50.22

ARP Nut, 12-point, ARP Stainless Steel, Polished, 12mm x 1.25 Thread, 180000psi, Set of 2

ARP Nut, 12-point, ARP Stainless Steel, Polished, 12mm x 1.25 Thread, 180000psi, Set of 2

$24.72

ARP Connecting Rod Bolts, High Performance Series, Through-Bolt, 180, 000psi, 8740 Chromoly Steel, For Oldsmobile, Set of 8

ARP Connecting Rod Bolts, High Performance Series, Through-Bolt, 180, 000psi, 8740 Chromoly Steel, For Oldsmobile, Set of 8

$90.13

ARP Bolts, 12-Point Head, Chromoly Steel, Black Oxide, 10mm x 1.50 RH Thread, 100mm UHL, Set of 5

ARP Bolts, 12-Point Head, Chromoly Steel, Black Oxide, 10mm x 1.50 RH Thread, 100mm UHL, Set of 5

$46.11

ARP Bolts, 12-Point Head, Stainless 300, Polished, 5/16 in.-18 RH Thread, 1.750 in. UHL, Set of 5

ARP Bolts, 12-Point Head, Stainless 300, Polished, 5/16 in.-18 RH Thread, 1.750 in. UHL, Set of 5

$42.93