Product review (5 stars): Part works but other repairs are needed
As others have noted, this drive cup breaks because the auger gets out of alignment due to poor design of the ice bucket. If you need to replace this drive cup, you probably also need to fix this other issue or it will break again. You can see from the photos I uploaded that the center shaft of the augur has threads at the front end of the ice bucket where it threads into a plastic nut. The plastic nut should rotate with the auger shaft but over time it ends up screwing further into the nut and pushing the end of the shaft into the plastic housing, where it bores a hole.

My solution was to drill a small hole inside the plastic nut, bend a small finishing nail and stick it into the hole, then I poured plastic epoxy inside the nut to keep the nail in place and generally make sure the augur shaft can't screw further into the nut. I stood the augur upright while the epoxy cured. Once it was done curing, I noticed the augur didn't turn as freely as it used to, so I don't know if epoxy/glue is the best option. I'm afraid the drive cup will break again because of how much resistance there is turning the augur now. But for the time being, my freezer is dispensing ice.