A-RE23191-AI Cross & Bearing Kit 35mm X 87mmOne New Aftermarket Replacement Cross and Bearing Kit (U Joint) Fits John Deere 40 Series Tractors This aftermarket replacement cross and bearing kit is a driveshaft universal joint (u joint) used in the front axle driveshaft assembly of Fits John Deere (Fits JD) 40 Series tractors equipped with a ZF front axle. It connects and transmits torque through the front driveshaft, allowing angular movement while maintaining power transfer to the front wheels