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 Nut, 12-point, 8740 Chromoly, Steel, Black, 3/8 in.-24 Thread, 180000psi, Set of 2

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