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• (60) tooth external spline provides exact OEM fit• Outside Diameter: 450.22 mm (17.725 in)• Inside Diameter: 178.114 mm (7.0123 in)• Width: 66.435 mm (2.6155 in)Application:Consult your owner's manual or contact your local Cat Dealer for more information.