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:• Hardened steel clutch piston• Five external flanges provide exact OEM fit• Width: 26.18 mm (1.0307 in)• Inside Diameter: 281.37 mm (11.0775 in)• Outside Diameter: 398 mm (15.669 in)Application:Consult your owner's manual or contact your local Cat Dealer for more information.