Description:Synchronizers are used in the transmission to adjust the speed of the shaft so that the gears align more quickly during shifting. The synchronizer uses the friction between cone and collar to synchronize the speed of rotating components.Attributes:• Synchronizer for direct drive transmission• End 1 External Spline Number of Teeth: 42• End 2 External Spline Number of Teeth: 35Application:Consult your owner's manual or contact your local Cat Dealer for more information.