Abstract: A crankcase filter assembly for filtering air in a crankcase ventilation system. The crankcase filter assembly (71) includes a crankcase filter housing disposed in an air cleaner assembly. The crankcase filter housing defines an opening in fluid communication with the air cleaner assembly and includes a first air inlet or drain hole spaced from opening and an air outlet in fluid communication with an engine crankcase. A filter cartridge supports first and second filters within the crankcase filter housing in respective first and second filter positions establishing a filter spacing therebetween. The filter cartridge interconnects the first and second filters for allowing their insertion and removable from the crankcase filter housing as a single unitary cartridge structure while maintaining the filter spacing between the first and second filters.