Stud - 1/2-13 and 1/2-20 in Thread - 8.500 in Long - Broached - Chromoly - Black Oxide - Universal - Each. Manufacturer: ARP (Automotive Racing Products). Automotive Racing Products (ARP) started in 1968, in Southern California.
ARP HEADER STUD KIT 400-1412 SB CHEVY 3/8 DIAMETER STUD 3/8 SIZE QTY 12
ARP HEADER STUD KIT 400-1402 SB CHEVY 3/8 DIAMETER STUD 3/8 SIZE QTY 12
ARP HEADER STUD KIT 120-1402 Buick 3.8L V6 3/8 BLACK OXIDE 12 POINT HEAD
Arp Header Stud 1.670 In Hex Nuts Polished Sbc 12 Pc P/N 400-1412
ARP Head Stud&Mahle Cylinder Head Gasket For 07.5-12 Dodge Cummins 6.7L 24V
ARP 12 Point Head Stud WASHERS LS VTEC B20B B16 Head GSR SI ITR (10 TOTAL)
