OK...I feel lame. I spent the last hr looking for this dang aux water pump. I removed the air filter box thinking it was underneath it but it was not. I saw some old pics of Ph2cho of his aux water pump along the passenger side front/below the coolant expansion tank. I saw the monovalve assembly behind the fire wall in front of the battery...is the bigger cylinder on the monovalve the Aux pump for the m104 95 e320?? They look the same but I'm a little stumped. thoughts?