Re: part #
I do realize this is an old thread, but I needed a new IAT and used this thread to find the number. Unfortunately I did end up going with the Chrysler part# because I TOO never could find a GOOD Mercedes #... And of course, the Chrysler # gets you the same part, but a much higher price... Best I could find was $39.00 online.
I received the part today and found it still in the Mercedes box, and the original part # still visible. So for anyone who needs this part, save yourself the headache, time AND MONEY, what you need is a Mercedes:
0005422818
Readily available under $20..