here is a excellent bosch site i found this afternoon,
http://www.boschusa.com/home.asp
it gives most of the MB bosch fuel injection part # for the 16v and the 8v,
The plus is that it tells you the closest place to you that can get
bosch parts, my local Acme auto, or pep boys told me 64.00 for the little black meter or 399.00 for the whole air flow meter new!! Alot better then the 650 they want at MB dealer with the club discount.