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 aluminum clutch piston• Outside Diameter: 390.55 mm (15.375 in)• Inside Diameter: 306.25 mm (12.057 in)• Width: 37 mm (1.456 in)Application:Consult your owner's manual or contact your local Cat Dealer for more information.