ARP 454-2101 Small Block Ford Stainless Steel Intake Manifold Bolts 221-302, 351W

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. Uses 3/8 in. socket.

Thread Size: 5/16-18 in.
Washer Included: Yes
Head Style: 12-point
Fastener Style: Bolt
Fastener Finish: Polished
Fastener Material: Stainless steel