Description:Lockup clutch piston for torque converter used to transmit and multiply torque to the transmission.Attributes:• Cast iron clutch piston• (132) tooth external spline provides exact OEM fit• Width: 24.5 mm (0.9645 in)• Inside Diameter: 311.16 mm (12.250 in)• Outside Diameter: 424.95 mm (16.730 in)Application:Consult your owner's manual or contact your local Cat Dealer for more information.