Description:Replacement impeller for torque convertor group.Attributes:• Material: Cast Aluminum• Number of Blades: 27• Outside Diameter: 392.00 mm (15.433 in)• Inside Diameter: 169.50 mm (6.673 in)• Height: 70.86 mm (2.789 in)Application:Consult your owner's manual or contact your local Cat Dealer for more information.