Hi Lea,

Following my own tests, I did some additional destructive testing on both the individual bmss as well as the complete Clutch assembly, consequently I don't have the parts anymore. Referring to my notes however, I see that the part no that was stamped on the bms' was 1901. The clutch fan unit itself was a "Behr". There were two Part No's on it: A) 603-200-00-22 2 B) 65.306.00.000.

I also remember that Mercedes in their Technical Bulletin stated that there are 3 possible bmss, and refereed to them by color, rather than part no's. They did not elaborate as to what the differences between the different colored bmss were.

I should also mention that when I conducted my tests, I rigged-up a contact above each bms so that when it bend, it would touch that contact, complete an electrical circuit, which then activated an LED. Otherwise, I would not have been able to determine when they bend. They where submerged in water, consequently I had no visual access from the sides, and very limited visual access from the top.

I used a spark-plug feeler gauge, to insure that the distance between the bms' and the contact was identical in all cases.

Regards,

Phil

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'95 E300 Diesel, 264,000 Miles. [Sold it]