The IAG ARP 1/2" Head Stud Nut is intended to directly replace (1) of the nuts included with our 1/2 Inch Head Stud Set with part number: IAG-ENG-1700. The nuts are sold individually, (x12) are required for (1) engine or (x6) per cylinder head.
WE ARE CURRENTLY EXPERIENCING A HIGH VOLUME OF ORDERS. PLEASE EXPECT DELAYS IN ORDER PROCESSING.