Fuel Filters | West Marine 18-79905 Fuel Filter Element, 10 Micron. (1)MAR-FUELF-IL-TR Fuel Filter/Water Separator, 10-Micron. (2)120AP Spin-On Fuel Filter/Water Separator, 30 Micron. (1) Everyday Value. RACOR. 120RMAM2 18-7928-1 AquaVue Bowl Fuel Filter/Water Separator, 10 Micron. (1)See all full list on westmarine Fuel Filters | Wholesale Marine Marine Fuel Filters Marine fuel filters are just that- a filter in the fuel line that screens dirt, rust, and debris from the gas. Fuel filters are cartridges that contain a paper filter, and are intended to be changed routinely, to prevent damage to engines and other fuel line components. No boat engine fuel line should be without one.