Description:Input shaft transfers power from torque converter to the transmission system of Cat heavy duty equipment.Attributes:• Hardened steel shaft• End 1 External Spline Number of Teeth: 20• Center External Spline Number of Teeth: 50• End 2 External Spline Number of Teeth: 44• Thread Size: M16Application:Consult your owner's manual or contact your local Cat Dealer for more information.