That is on your 96 E320, when my pump failed on my SL320 it accumulated water in the same place. they fail at about 100k. Not a fun project, just take your time and be patient. Remove the belt, the PS pump and when you remove the hex bolts that hold on the pump be sure they are clean as you could strip the bolt if the allen doesn't go all the way into the head. You might also have to remove the compressor and the oil separator. Takes a Saturday. Be sure to put it up on ramps before you start cause you will have to get underneath it. Good luck!
Brian

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Brian W. Heitman

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