Wrong Fog Lamp Lense from MB?

Quick one for someone with access to the MB parts catalogue.

I've ordered a fog lamp lense from an MB main dealer. I gave them my registration number and they sent out the lense, however, it looks the wrong shape.

The part number on the box is A2038260290. I've done some Googling and I think it's for an SL, but I wanted confirmation before I send it back.

My car's an 08 plate SLK350 R171 Facelift sports pack (non-AMG bodykit).

Thanks in advance