Replacement inline fuel filter 864572 will fit MerCruiser sterndrive and inboard gasoline engines using a fuel booster pump. Installed between the fuel tank and the booster pump. Prevents debris that may be in the fuel tank from getting to the boost pump inlet. Replace the filter at least once each boating season and before winterizing your. Remove the old filter and easily insert the new clean filter. See your owner s manual for replacement recommendations based on your engine use. The Quicksilver brand is the leader in delivering uncompromising engine oils parts and accessories to the marine industry for over 65 years. Quicksilver is the premier supplier of Mercury Marine original equipment replacement engine parts oils and accessories but also works to serve all original equipment brands in the marine and powersports industries. It has earned a loyal following by providing the highest quality products that are tested through some of the most rigorous environments and testing procedures. No aftermarket company comes close to the level of research and design as Quicksilver; buying Quicksilver is buying performance protection and peace of mind.