Description:Part # 590-1889 provides a speed sensor drive adapter for the transmission planetary.Attributes:• Drive adapter with expander plug• Hardened steel• Internal Spline Number of Teeth: 31• Outside Diameter: 72 mm (2.835 in)• Flange Diameter: 100 mm (3.937 in)• Width: 50 mm (1.968 in)• Mounting Hole Size: 9 mm (0.35 in) (4X)• Application:Consult your owner's manual or contact your local Cat Dealer for more information.