ARP | 5.9L 12 Valve – Cummins 14mm Main Studs

ARP | 5.9L 12 Valve – Cummins 14mm Main Studs

Fits: 89-98 (5.9L) 12-valve cummins trucks

These ARP main studs are made from 8740 chromoly steel and have a 200,000 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.

Please note – If your Engine has 2 factory oil drains you will need the 12mm Main Stud Kit