The one I took out, with the same part number, and which I assume to be original, had depressions on the drum side of the mounting hole. There were then plastic nipples on the drum that fit into the depressions. I cut the plastic nipples off of my drum so that it would work. I also wrapped duck tape around the middle so if it breaks again, it won't spew chunks of concrete. I tightened as tight as I could choked up all the way on the ratchet and used copious amounts of red Lock-tite. We will see if it holds.
We will see if it holds. My first time inside a front-loader and I gotta say that appears to be both well designed and well built. I have the Blue Samsung.