Just replaced a lower ball joint, That when it popped it pulled the avel from the trans, when replacing I did not know if anything goes back into the transaxel with the axel. Reason I ask is there was a bearing the was on the floor covered in grease like it came from the trans/axle joint, but I am unsure where it goies to. It does not fit over the axle, and there was not a spot that it fit snuggly into the transaxel. Bearing is about 1'1/2. Flat one side on other there is a slight ridge that borders the center hole. In center there is a ring that is movable 360 degrees. My thoughts is it could be a spacer, but that is only a guess.