ARP Stainless Steel Header Bolt Kit - Drilled - SB Chevy - 3/8" Diameter, .750" Under Head Length - Hex Head - (12 Pack) 1034903 no need to modify the

no need to modify the filler neck

1969-1971 Pontiac Acadian

Vehicle Applications: CHEVROLET SILVERADO 1500 DOUBLE/CREW/GMC SIERRA 1500 DOUBLE/CREW 14-18/CHEVROLET SILVERADO 1500 LD 19-19/CHEVROLET SILVERADO 2500/3500 DOUBLE/CREW/TAHOE/SUBURBAN/GMC YUKON/YUKON XL 15-20/GMC SIERRA 1500 LIMITED 19-19

Kits increase safety and the structural integrity of the vehicle

ARP Stainless Steel Header Bolt Kit - Drilled - SB Chevy - 3/8" Diameter, .750" Under Head Length - Hex Head - (12 Pack) 1034903 no need to modify theChoose 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 Hex Head Stainless Polished Drilled Small Block