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: 32.1 mm (1.2637 in)• Inside Diameter: 284 mm (11.181 in)• Outside Diameter: 398 mm (15.669 in)Application:Consult your owner's manual or contact your local Cat Dealer for more information.