Product review (4 stars): Metal bushings may make machine harder to repair in the future.
I am concerned about the "improved" metal bushings on this part. I had a hard time getting the old all plastic coupling off of the transmission. Unlike some of the other models. my machine (an older Kitchenaid) had very little access to the sides and back of the old coupler - there is no way in my machine to get behind it with a screwdriver or hammer claw because the coupler is mostly surrounded by the cast iron housing of the transmission.  Even removing the faceplate of the transmission would not have helped.  Finally I hit upon the idea of slipping a piece of string behind the coupler and pulling it off the shaft - this worked great for the old all plastic part. But in order to get the new part down flush with the end of the shaft I had to (as the online videos suggest) drive it down by tapping it with the back of a screwdriver being hit by a hammer.  So now it is on the shaft very snug metal on metal.  I hope it doesn't break again because I have no idea how I could ever pull this off the shaft again - I doubt the string trick will work for something that was driven on with a hammer.  Ironically the old part in my machine failed by breaking off the prongs (all but 1) and not at the center.  It would have actually made it easier to remove from the shaft if the old part had failed at the center hole but in fact the connection to the shaft remained perfectly intact , so the bushing was not a failure point (in my machine) to begin with.  I understand that there are still all plastic couplers available - you may want to look for those so that your machine remains fixable in the future.

You can argue that the metal bushings may make the part less likely to NEED a repair again but every part (even the new improved version with bushing)  is going to fail eventually and you want something that is fixable when it fails.  This part is MADE to break.  It's made out of soft plastic not because Whirlpool is cheap (though they are) but in order to function as a sacrificial part - better to shred a $5 coupler than burn out a $100+ motor.  If your machine breaks again shortly after installing this part, you need to investigate what is causing the excessive load.