ARP 244-5400 Main Studs Chromoly Hex Head 2-Bolt - Chrysler Dodge 5.7/6.1L Kit. Main studs chromoly hex head 2-bolt Chrysler Dodge 5.7 / 6.1L Kit. ARP main stud kit strengthens the main caps to eliminate walk/fretting and protects the threads in your engine block. The studs are made from 8740 chromoly steel & heat treated in-house to 190,000 psi tensile strength rating.  Precision J-form threads are rolled after heat-treating to increase the strength of the threads. The kit includes hardened parallel ground washers & high quality nuts. The kit does not work with windage tray. Look the pictures over to ensure it meets your satisfaction and check your application before making a offer or buying now...Feel free to check out my store for additional items you may need or want...or just for fun...Thanks