ARP Stainless Steel Header Bolt Kit - Drilled - SB Chevy - 3/8" Diameter, .750" Under Head Length - 12 Pt. Head - (12 Pack) M61HAK A urethane plug is also

A urethane plug is also included for those cold weather applications where you want to block the auxiliary air scoop

Compact EFI Regulator and Fitting KitAeromotive Inc

A 3/4'' thick head deck makes it ideal for nitrous or blower applications

Not for use on vehicles that have been converted to side motor mounts

see the SS Fuel Pump

ARP Stainless Steel Header Bolt Kit - Drilled - SB Chevy - 3/8" Diameter, .750" Under Head Length - 12 Pt. Head - (12 Pack) M61HAK A urethane plug is alsoChoose 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 possibilty of retempering due to exhaust temperature cycles. Rated 170, 000 psi tensile strength. Since 1968, ARP is the fastener of champions and the world leader in fastener technology. Product Description: Header Bolt 3 8 16 in Thread 0. 75 in Long 12 Point Head Stainless Polished Drilled Small Block