Quicksilver 35-864572 Fuel FilterReplacement inline fuel filter 864572 fits MerCruiser sterndrive and inboard gasoline engines with a fuel booster pump. Installed between the fuel tank and booster pump. Prevents debris from reaching the pump inlet. Replace at least once per season and before winterizing. Easy to install. Refer to your owner's manual for replacement intervals.Application: Fits all MCM/MIE gasoline engines using a boost pump. Installed between the fuel tank and the booster pump; Prevents debris that may be in the gasoline fuel tank from getting to the boost pump inlet; Replace the filter once each season or as your owner's manual recommends based on engine use; Produced to meet Mercury Marine original equipment manufacturer specifications to maximize the performance of your Mercury and Mariner outboard or MerCruiser sterndrive;