MAS Control Unit Interchangability
 

Are mass control units universally interchangable if visually they are the same? Specifically, my part number is 008 545 8132. I may have access to PN 7932 from a 1990 300E, or 8532 that I am told may be from a 300SL. The reason for replacing my original is that the air compressor does not work. Upon doing some diagnostics and swapping a unit from another car (91 300E), the compressor and ac worked perfectly.
I physically do not have access to the 2 units I speak so if any one knows the interchangibility, it would be a great help.

check the number 008-545-81-32, it doesn't come back as a good number. give me your chassis number and i will verify that the mas unit you have is correct, and will also tell you which ones, if any will interchange

Mass Control Unit Interchangability
 

Here is the vin,

WDBEA30D9LB197314.

I was wrong on the part number on the car. It is 007 545 65 32