So, I usually buy parts from Pelican Parts, but they were out of stock when I needed a new regulator. I ordered the following part:

https://www.ecklersmbzparts.com/mercedes-window-regulator-manual-front-right.html

Is there supposed to be a plastic bushing that rides along the rail of the window slide? The picture of the part doesn't seem to show one, but I'm pretty sure that the one I removed had one in there (before I threw it away a month ago). The one I received does not have a bushing and the regulator rides metal-on-metal on the rail.

Does anybody know?

__________________
1982 240D - 292,000 miles and counting
Same family for 33 years
Newly rebuilt Monark injectors
Newly replaced clutch
New Bilstein shocks

Yes, it's white plastic. It simply slides on the end. If you're not careful on re-install, its easy to break it. Dont ask me how I know. LOL