Description:Shaft and coupling (6G-3664) for use with the axle shaft that transmits power from the differential to the final drive of Cat heavy duty equipment.Drive train components must endure incredible torque, high impact loads, and frequent direction and gear changes. Cat designs and manufactures its transmissions and final drive components with these demands in mind. The result is a drive train that lasts longer and works harder over the life of the machine.Attributes:• Hardened steel shaft with coupling• External Spline Number of Teeth: 43 (Shaft)• Internal Spline Number of Teeth: 43 (Coupling)• Shaft Diameter: 67.666 mm (2.664 in)• Shaft Length: 1002 mm (39.44 in)Application:Consult your owner's manual or contact your local Cat Dealer for more information.