Looking for a brake and clutch pedal mount. Mercedes part number is removed however in pink it is stamped 82263BKQ7. Any advice please and thank you.

 

I'll try to get the part number off of my 2006 tomorrow.

 

I couldn't see the part number on mine without taking the lower dash apart.
However, I think I found the part number: 170 290 01 19. It's called a Bearing Bracket.
I would take your broken part to your local Mercedes-Benz dealer and have him verify the part number I found.
When you go to the MB dealer they will want a VIN for your car. Go online and find a 2001 - 2003 SLK 320 for sale and use that VIN.
Here is the link to the part I found. (It's PART # 5 in the diagram).

Clutch pedal bracket