Description:Cat clutch pistons are a key component in the planetary assemblies that power tough Cat transmissions to convert engine power into the exact combination of speed and force required by individual machines.Attributes:• Cast iron clutch piston• Outside Diameter: 520.04 mm (20.474 in)• Inside Diameter: 462.25 mm (18.198 in)• Width: 23.58 mm (0.928 in)Application:Consult your owner's manual or contact your local Cat Dealer for more information.