Bolts, Intake Manifold, Chromemoly, Black Oxide, Hex Head, Ford, 221-302/351W, Kit, 5/16-18, 3/8" Socket.
Keep your intake in place and prevent leaks.
ARP's rugged, black-oxide coated chromemoly 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.