ARP Header Stud Kit - 12Pt. - 3/8" x 1.670" OAL (12) Header Fasteners, Studs, External 12-Point, Custom 450, Black Oxide, Chevy, SB 91301 Fittings fit in a 5/8"

Fittings fit in a 5/8" hole and are sold in a pack of 2

conforms to SFI 3

Standard plates are 1/2" thick

2-Port Body with dual AN-10 inlet/outlet ports and one AN-10 return port

ARP Header Stud Kit - 12Pt. - 3/8" x 1.670" OAL (12) Header Fasteners, Studs, External 12-Point, Custom 450, Black Oxide, Chevy, SB 91301 Fittings fit in a 5/8"ARP header stud kits facilitate the installation of your headers. Rated at 170 000 psi they're stronger than stock and will last under even the most severe conditions. Each kit includes the specific number of parts required for the desired application plus premium quality washers and either hex or 12 point nuts. ARPs product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline.