ARP 234-4316 12pt. Head Stud Kit 1997-2003 GM GEN III LS LS1 LS6 LQ9 5.3 6.0 4.8. 12pt Nut w/Washers. Since 1968, Automotive Racing Products has been engineering and perfecting bolts, studs, nuts, and other fasteners for engines, cylinder heads, headers, wheels, transmissions, and more.
