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:• Material: Cast aluminum• Outside Diameter: 133.05 mm (5.238 in)• Inside Diameter: 54.0 mm (2.125 in)• Thickness: 22 mm (0.866 in)Application:Consult your owner's manual or contact your local Cat Dealer for more information.