If both pumps are original then they "should" be replaced as a pair. MANY times we would replace 1 & with-in a few days the other one would quit.
MOST of the time that requires a TOW & a very un-happy person...

MB part number WAS 002-091-88-01 & can be replaced by 003-091-53-01.


They are at the rear of the car on the passenger side in a plastic housing.

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MERCEDES Benz Master Guild Technician (6 TIMES)
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