20 micron filtration delivering over 90% efficiency to provide your engine with clean fuel for peak performance Water separating fuel filters help keep damaging debris from getting to your engine while also keeping performance robbing water from reducing the efficiency and economy of the engine Replace the filter once each season or as your owner's manual recommends based on engine use Replaces GLM 24941, Mallory 9-37800, Fram PS3808, Moeller 33323-10, WIX 33225, Sierra 18-7844 Universal Head fit, 93mm height