Okay, still no joy. I just got off the phone with MB dealer in Phoenix who has a throttle body in stock and the gasket/flang is NOT part of the throttle body. I will take the part to a Chrysler dealer and see if they can find it.

ImportLabSRT could not find the part on the SLK32 and the line pipe is the same between the SLK32 and the C32. So it would not need this part to rotate the mounting holes. They both mount square and use a paper gasket.

Still searching.....

MikeR