Abstract: The filter may include a first end cap, a second end cap, and a filter media. The filter media may be located between the first end cap and the second end cap. The filter media and the end caps may be located in a shell. An insert including a projection may be connected to the shell. The projection may engage a valve in the filter head when the filter is mounted onto a filter head. The projection may include a curved portion. The curved portion may engage a ball in the valve. The filter media may be a coalescing media which may assist in separating water from a fuel and water mixture.

Abstract: An adapter clip is provided for a filter assembly that includes a housing, a specialized replaceable filter element, and an extension and locking mechanism for cooperating with the specialized filter element to preclude operation of the filter assembly without a specialized filter element. The adapter clip will render the extension and locking mechanism inoperative and permit the use of a universal filter element. Also, the use of the adapter clip will enable filter assembly operation without any filter installed, as may be desirable in emergency situations.