ARP ARP2000 Main Stud Kit | 2004-2007 Dodge Cummins 5.9L (247-5403)2004 2007 Dodge Cummins 5. 9L Main Stud Kit by ARP Includes a set of fourteen ARP2000 M12 main studs, fourteen newly manufactured 8740 chrome moly steel (low height) 12 point nuts to clear the OEM main girdle, fourteen 8740 accessory bolts that secure the main girdle to the engine block and a 1 2 oz. pack of ARP Ultra Torque fastener assembly lubricant. All Pro Series ARP2000 studs are centerless ground, heat treated prior to thread rolling and