The SunCoast Billet Direct Drum for your 1994-2007 Dodge 5.9L Cummins Automatic Transmission is CNC machined from C1040 solid steel. This billet drum contains NO CAST IRON! It will hold 5 - 6 friction Plates. 55%, YES that's 55% MORE Piston Apply Area! This results in double the Clamping Force needed in Third Gear.