The South Bend 1939CB Clutch Kit is an upgrade for your 1999-2003 Ford 7.3L Powerstroke. This style of clutch disk has proven itself in the semi's for the past 20 years. This clutch disk is designed to absorb the vibrations of the diesel and gives the capability of hauling heavy loads without causing premature disk failure. The OEM Valeo disk has a tendency to throw the dampening springs. This disk, with the modified Valeo pressure plate, bolts directly to the OEM solid flywheel and will handle up to 450 hp and 900 ft. lbs. of torque. For use with your existing factory flywheel.