Abstract: The filter assembly includes a threadless closure system for sealing a filter element of the filter assembly within a bowl of the filter assembly. The bowl is fluidly connectable to opposing fluid transfer passages. The filter element and a cover element connected to the filter element are received into the bowl. The filter element is retained in the bowl via a pin of the filter assembly that engages the cover element. The filter element may be removed and replaced without the unscrewing of threads exposed to an external environment external to the filter assembly during typical use of the filter assembly.

Abstract: The filter assembly includes a threadless closure system for sealing a filter element of the filter assembly within a bowl of the filter assembly. The bowl is fluidly connectable to opposing fluid transfer passages. The filter element and a cover element connected to the filter element are received into the bowl. The filter element is retained in the bowl via a pin of the filter assembly that engages the cover element. The filter element may be removed and replaced without the unscrewing of threads exposed to an external environment external to the filter assembly during typical use of the filter assembly.

Abstract: Provided is a filter element includes an end cap having at least one stop member extending radially outwardly from an outer surface, the at least stop member having at least one stop surface for contacting a tab on a slip thread collar of a filter head assembly. When the filter element is coupled to the filter head assembly, the filter element prevents rotation of the slip thread collar relative to a filter head, thereby allowing threads on the slip thread collar to mate with threads on a filter bowl to couple the filter head assembly to the filter bowl. The interaction between the filter element and filter head assembly prevents the filter head assembly from being coupled to the filter bowl when the filter element is not installed.