ARP 1/2-13 in Thread to 3/8-24 in Thread Chromoly Stud - 3.25 in Long - Broached - Black Oxide Exhaust Pipe Reducer 5821Since 1938

5821Since 1938

Includes light and heavy spring sets

1998-1998 Peterbilt 378

Waterman Pumps

ARP 1/2-13 in Thread to 3/8-24 in Thread Chromoly Stud - 3.25 in Long - Broached - Black Oxide Exhaust Pipe Reducer 5821Since 1938Product Description: Stud 1 2 13 in Thread to 3 8 24 in Thread 3. 25 in Long Broached Chromoly Black Oxide Universal ARP is the fastener of champions. They say that to be successful you must identify a need and satisfy it. Back in 1968 racing enthusiast Gary Holzapfel saw that many of his friendsa broken engines were caused by fastener failure. At the time, there were no commercially available studs and bolts up to the challenge. So Holzapfel called