Thread Size:5/16-18 in.
Fastener Finish:Black oxide
Quantity:Sold as a kit.
Notes:Small block Chevy Vortec. Fits most aftermarket aluminum manifolds.
ARP's 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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