ARP rugged, black-oxide coated chromoly intake manifold bolts are rated at 170,000 psi. They're precision-machined for optimum thread engagement and have a wide-area flange for better load distribution. They also feature precision-rolled threads, which prevent galling, while promoting more consistent torque loading. These bolts are available with either hex or 12-point heads, and washers are included.

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ARP Bolts, 8740 Chromoly, Black Oxide, Hex Head, 1/2-13 in. Thread, 2.75 in. UHL, Set of 5

ARP Bolts, 8740 Chromoly, Black Oxide, Hex Head, 1/2-13 in. Thread, 2.75 in. UHL, Set of 5

$52.50

ARP Bolts, 12-Point Head, Stainless 300, Polished, 3/8 in.-16 RH Thread, 4.000 in. UHL, Set of 5

ARP Bolts, 12-Point Head, Stainless 300, Polished, 3/8 in.-16 RH Thread, 4.000 in. UHL, Set of 5

$58.13

ARP Washer, Hardened, High Performance, Flat, 1/4 in. ID, 0.550 in. OD, 0.075 Thick, Stainless Steel, Polished, Set of 10

ARP Washer, Hardened, High Performance, Flat, 1/4 in. ID, 0.550 in. OD, 0.075 Thick, Stainless Steel, Polished, Set of 10

$13.11

Wilwood Bolt, Hex Head, Alloy Steel, Grade 8, Hex, 1.500 in. Length, 1/2-20 Thread, Kit

Wilwood Bolt, Hex Head, Alloy Steel, Grade 8, Hex, 1.500 in. Length, 1/2-20 Thread, Kit

$7.88

ARP Nut, Hex, Self Locking, Steel, Cadmium, 5/16 in.-24 Thread, 1/2 in. Height, Each

ARP Nut, Hex, Self Locking, Steel, Cadmium, 5/16 in.-24 Thread, 1/2 in. Height, Each

$26.82