Be careful with this, many of the Mercedes fan clutches look similar but are model-specific. The only interchangeability I found is below:

1990-1993 300D's
1992 and 1993 300SD's

That's not to say there might not be others, but be careful.... you don't want to drop big bucks on the wrong fan clutch. Why do you want to use a fan clutch from another model anyways?

__________________
"I would rather be ashes than dust!
I would rather that my spark should burn out in a brillaint blaze
than it should be stifled by dryrot.
I would rather be a superb meteor,
every atom of me in magnificent glow,
than a sleepy and permanent planet.
The proper function of man is to live, not to exist.
I shall not waste my days in trying to prolong them.
I shall use my time."

-Jack London 1876-1916

1983 300CDT (running WVO since 12/05)
1981 300SD (parts car)