What size....
 

....is the nut holding the armrest on in a W123? I need to know what size to buy. Thanks

oh boy.

I can't wait to find out what you're talking about when I have to repair that.

what??

If you remove the back panel on the drivers side seat you'll see the big nut that holds the armrest to the seat. Im removing the seat covers off of some seats I got from the junkyard to sell on ebay. If I don't remove the armrest I cant remove the MBTEX cover.