ARP Stainless Steel Header Bolt Kit - SB Chevy - 3/8" Diameter, .750" Length - Hex Head - (12 Pack) 23-FLT-NFO-S More area and smoother transitions

More area and smoother transitions from the inlet to the outlet

C2 is high in torque value yet has very long pad wear life while remaining rotor friendly

Ultra Lightweight Three-Layer Construction Soft Aramid construction

springs and either 1" or 1-1/8" jack bolts

Japanese and other manufactures from around the world specifying Mercon V type transmission fluids

ARP Stainless Steel Header Bolt Kit - SB Chevy - 3/8" Diameter, .750" Length - Hex Head - (12 Pack) 23-FLT-NFO-S More area and smoother transitionsChoose from ARP Black Oxide or 300 stainless steel in hex or 12 pt. Heads. The 300 stainless material is not affected by extreme heat, eliminating the possibility of retempering due to exhaust temperature cycles. Rated 170, 000 psi tensile strength. ARPs product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline. These range from quality high performance OEM replacement parts