Searched and couldn't find this particular issue. The rubber covered rollers at the end of the arms that lock the manual sunroof up into place....

My rubber is gone, and the EPC shows only the whole arm (for $100).

What have other folks done?

Yes....the 240D gets closer to the road and I keep finding things....'gee, the rear of the sunroof if a little low, lets yank it and take a look.'

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Eric, CPO, Submarines, retired.
Here's a sig line...
Mine: '68 Corvette LS1/4L65E, 83 240D, 2000 GMC 4x4, 08 FLSTC Anniv
Hers: '72 Corvette 454/4spd, '99 MB SLK, '93 Metro vert, 78 240D, '92 Silverado, '65 Fjord Rustang, '59 Fjord Fairlane, '17 Slingshot.

yes, i also confronted this recently and confirmed that only the whole arms are available. i assume that one could rig up a replacement with cabinet hardware of some sort. the wheels don't look complicated and nor do they need to be particularly robust. i myself deleted the sunroof instead of pursuing it.

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'77 240D, 504H, OM617.952, etc.