original manufacturers part, but not as we know it Jim.
Heliguy always sets standards in service, and parts arrived very quickly. This part is needed because the bevel gear at the tail end is easy to damage, and it's bonded to the shaft. I was initially worried when I received it because the shaft only carries one ball race, whereas my original had two. Heliguy confirmed, in a quick phone call, that this mod was fine, and so its proved.