Description:Clutch piston for torque converter used to transmit and multiply torque to the transmission.Attributes:• Cast iron clutch piston• (100) tooth external spline provides exact OEM fit• Outside Diameter: 518.26 mm (20.403 in)• Inside Diameter: 303.27 mm (11.939 in)• Width: 45.27 mm (1.782 in)Application:Consult your owner's manual or contact your local Cat Dealer for more information.