Abstract: A fuel tank water separator assembly includes a tank, a water separating plate having a sloping portion and a top part and a bottom part on the sloping portion. The plate is connected to the tank and defines therewith communicating upper and lower chambers, the plate and the tank being of a construction sufficient for gravity settling and separation of water from the fuel in response to movement of the water along the sloping portion of the plate. A first opening at the bottom part of the sloping portion passes fluid to the lower chamber, and a second opening at the top part passes displaced fuel to the upper chamber.