Diesel engines are equipped with a fuel transfer pump that sucks fuel from the fuel tank and supplies it under pressure to the fuel injection system. Between the fuel tank and the fuel transfer pump (the vacuum side), boatbuilders or boaters fit a fuel filter/water separator (the primary filter). Between the fuel transfer pump and the fuel injection system (the pressure side) the engine manufacturer fits a fuel filter (the secondary filter).
Glass fiber, Fuel filter paper, Composite paper
Cross Reference For FF63013
FLEETGUARD FF63013 CUMMINS 3696765 396765A2080A