between shaft and hex. Free Shipping - ARP Camshaft Drives with qualifying orders of $109. Shop Camshaft Drives at Summit Racing IE Race Exhaust Camshaft - VW/Audi 1.8T 20V IECVA1-1 Through-hardened shaft forged from ARP2000 chrome moly steel with corrosion-resistant oxide finish It is 1 long, features form rolled threads that are 9/16 -18 by . Threads are form rolled 9/16 by . Stop worrying about the survivability of your camshaft drive Arp 9340005 Camshaft Drive Belt ARP 934-0007 ARP Camshaft Drive Seal Plates Summit Racing Camshaft Drive Shaft 625 on the cam end and 3/8 hex on the drive, and the concentricity is ., 001 T., I., R. Intermediate shaft / Camshaft drive, size 0 / new / 911 964 / 103-10 Camshaft... If you have been concerned about the survivability of your camshaft drive, and its ability to make it through an entire race without stripping or breaking, ARP's new cam drive should put your mind to rest. This is a through-hardened (not just case hardened) shaft forged from ARP2000 alloy chrome moly steel with corrosion-resistant oxide finish, and it is rated at 220,000 psi.