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• Six external flanges provide exact OEM fit• Outside Diameter: 535 mm (21.062 in)• Inside Diameter: 406.6 mm (16.007 in)• Width: 26 mm (1.023 in)Application:Consult your owner's manual or contact your local Cat Dealer for more information.