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• Outside Diameter: 408.92 mm (16.099 in)• Inside Diameter: 370.25 mm (14.576 in)• Width: 40.16 mm (1.581 in)• Thread Size: 3/8-16 (2 Places)Application:Consult your owner's manual or contact your local Cat Dealer for more information.