help me !!!

I need help identifying parts 20, 21, 22 and 23 on the diagram. It's for the c32 if that is of any use. Any help would be greatly appreciated.

Hi everyone, I am hoping to get some help re problems with my C180 Avantgarde (2000 Model) I have owned this car since January 2010 and never had any problems with it. As it wasn't the only car in the household (though my favorite), I dont drive it regularly. I simply didn't want to pile on...

:dk: I now own a 1988 300te wagon ,the motor has 19500 miles on it, the the car sat for 5 years in a garage , I start it up the motor it runs pretty good , I go about 2 miles it runs pretty good , then out of the blue it starts chugging and I can barely get it home ... I let it set for an...