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: 25.8 mm (1.0157 in)• Inside Diameter: 270.25 mm (10.6397 in)• Outside Diameter: 398 mm (15.669 in)Application:Consult your owner's manual or contact your local Cat Dealer for more information.