Our ARP main cap stud kit are the best main studs you can buy for the big block Mopar engine. These are forged from aircraft quality 8740 Chrome Moly steel that exceeds the most stringent quality standards. Parallel ground and hardened washers (shown above) are also included. Finished in black oxide for good looks and corrosion resistance. For the super important job of holding the crank firmly in the block, when you need the absolute maximum strength available, just can't buy a better stud. Period.