Thanks for the photos. You got it out of the foam very neatly. With mine it is the cylinder part not the extension and it is quite literally shattered in to many pieces. Looks like I will have to attempt gluing it as I think the chances of finding a RHD armrest are remote. I don't think they are interchangeable with LHD.
They are interchangeable as the armrest is always on the left seat.
There's a few for sale on German eBay:
here and
hereIf you get stuck with sourcing a proper one, and won't mind waiting a few weeks, we could try the 3D printing route.
Given reasonably complete metric measurements, I could attempt to repro that internal element in CAD, and you'd just need to find someone locally to print it for you.
I've had good results so far with parts I've reproduced for my W124s (see below) so there's that as a last resort option

Unfortunately I've sold my spare armrest last year.


