ONLY ONE SET Three of these came off a low mileage 240D and one of them is new. The felt on the used ones is still all intact. They fit most W123 sunroofs(note - there are some early models that did not use these - inspect your feet before you order! Most wagon manual sunroofs do not use them either - check your roof first. Four are required for applicable sunroofs. If your sunroof is not closing tightly or jams easily it may mean one or more of these felts are damaged or missing.
One is located at each corner of the sunroof. See the pictures below. Removal of the sunroof is required for track cleaning and felt replacement. See my manual on sunroof removal and repair if you are not familiar with this procedure. Look below.
Enough grease is provided to lubricate the felt pads and the rest of the sunroof tracks.