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• Five external flanges provide exact OEM fit• Width: 27.43 mm (1.0799 in)• Inside Diameter: 327.71 mm (12.9019 in)• Outside Diameter: 431.8 mm (17.000 in)Application:Consult your owner's manual or contact your local Cat Dealer for more information.