Unfortunately it is not available, the motors are made with the shaft. They start with a hole in the bottom that is half the diameter of the shaft and the shaft is pressed in with a press and it is generally a one time shot, after the first install the seat is stretched and cannot firmly grasp a replacement, especially if the old one has to be forcibly extracted because it is broken off. We can sometimes save them if they pulled out intact due to calcium build up and you have the complete shaft. In general this will only happen on the very first motors from Oct 2006- June 2007, their was a design change in July 2007, a new shaft material and tighter and deeper fit remedied this issue.