This under-cowl, in-line fuel filter fits many Mercury and Mariner outboards replacing contaminated filters and is mounted under the engine cowl. It also fits in specific MerCruiser fuel filter housing. It fits the filter housings for Verado L4, L6 (serial number 2B144122 and below). It fits 1.5L and 3.0L outboards using a vapor separator system with top screw in filters. It also fits MerCruiser 4.5L and 6.2L engines (serial number 2A456613 and newer. Don’t let water moisture or other fuel contaminants rob horsepower from your engine. Filter those particles before they can get to your engine. 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.