ARP Main Stud 4-Bolt Kit Main 12PT Nut suit Dart LS Next Iron Block
ARP main stud kits are made from 8740 chromoly steel and have a 190,000 psi tensile-strength rating. They are precision centerless-ground and thread-rolled to Mil-S-8879 specs, with a black oxide finish for corrosion resistance. The kits come complete with hardened washers and high-strength hex nuts.
Socket Size(s): 9/16 12pt, 9/16 hex, 3/16 Allen, 5/32 Allen
