You and me both. I thought it was a one piece tubular driveshaft.
Rick, that's a pick I found on a Benz site doing a search on W124 bearing carrier.
Just went out and snapped my own pics. U-joint is bad I think. lot of play.
to get to it, I have to drop the exhaust, worst possible job. I hate exhaust work of any kind.
going to call the yard I got the diff from and hope they have the driveshaft.