{"product_id":"fuel-water-separator-filter-for-mercury-mariner-outboards-replaces-35-807172-10-micron-3-88in-metal-bowl-90-gph","title":"Sierra 18-7944 Fuel Water Separator Filter, 10 Micron, Replaces Mercury Marine 35-807172","description":"\u003cp\u003eThe Sierra 18-7944 is a 10 micron fuel water separator filter built to protect fuel-injected marine engines from the water and particulate contamination common in ethanol-blended fuel. Ethanol-blended fuel absorbs more water and loosens more particulate than regular fuel, so proper filtration is required for every horsepower engine. This filter rates over 90% efficient at removing particles as small as 10 micron and flows at 90 GPH to keep up with high-demand engines. It is built with a metal outer housing for durability in the marine environment. The 18-7944 is the short-filter version in Sierra's fuel water separator lineup and is used as the filter element in Sierra's 1\/4 inch aluminum fuel water separator kits (part numbers 18-7983-1 and 18-7983-2), each of which pairs it with an 18-7853-1 mounting bracket and 1\/4 inch pipe plugs. For engines built around a taller filter housing, Sierra offers the related 18-7945 filter instead, so confirm which filter your existing bracket and housing were built for before ordering. The 18-7944 is a universal-fit filter intended as a direct equivalent to the OEM Mercury Marine filter it replaces.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-7944\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicron Rating:\u003c\/strong\u003e 10 Micron\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow Rate:\u003c\/strong\u003e 90 GPH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFiltration Efficiency:\u003c\/strong\u003e Over 90 percent efficient at removing particles as small as 10 micron\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1 pound\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit Type:\u003c\/strong\u003e Universal Fit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVehicle Service Type:\u003c\/strong\u003e Watercraft\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Equivalent Part Number:\u003c\/strong\u003e Mercury Marine 35-807172\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eUniversal fit for watercraft fuel systems using this filter size; not restricted to a specific make, horsepower, or model in the source data.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury Marine 35-807172\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-7944 fuel water separator filter do?\u003c\/strong\u003e It removes water and particulate contamination from marine fuel before it reaches the engine, which is important with ethanol-blended fuel because that fuel absorbs more water and loosens more particulate than regular fuel.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat micron rating is the 18-7944 filter?\u003c\/strong\u003e The 18-7944 is rated at 10 microns and is over 90 percent efficient at removing particles as small as 10 micron.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the OEM equivalent for the 18-7944?\u003c\/strong\u003e The Sierra 18-7944 is the equivalent to Mercury Marine part number 35-807172.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much fuel flow can the 18-7944 handle?\u003c\/strong\u003e The 18-7944 flows at 90 GPH, which is rated to feed even high-demand engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-7944 filter weigh?\u003c\/strong\u003e The Sierra 18-7944 fuel water separator filter weighs 1 pound.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the housing made of on the 18-7944?\u003c\/strong\u003e The 18-7944 has a metal outer housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-7944 fit a specific engine make or horsepower?\u003c\/strong\u003e The 18-7944 is listed as a universal fit filter for watercraft fuel systems rather than being tied to one specific engine make, horsepower, or model.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between the 18-7944 and the 18-7945 filter?\u003c\/strong\u003e The 18-7944 is the short-filter version used in Sierra's short-filter fuel water separator kits, while the 18-7945 is the tall-filter version used in Sierra's tall-filter kits; they are not interchangeable in a housing built for the other size.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat comes in the box with the 18-7944?\u003c\/strong\u003e The 18-7944 ships as a single fuel water separator filter unit; it does not include the mounting bracket or pipe plugs that come bundled in Sierra's complete filter kits like the 18-7983-1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-7944 a genuine part or aftermarket?\u003c\/strong\u003e The 18-7944 is manufactured and sold under the Sierra brand as a direct equivalent to the Mercury Marine 35-807172 filter, not a Mercury Marine branded part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow often should the 18-7944 filter be replaced?\u003c\/strong\u003e Proper filtration with a filter like the 18-7944 is required for every horsepower engine, and it should be replaced as part of routine fuel system maintenance since it is a consumable filtration component.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the 18-7944 be used in Sierra's fuel water separator kits?\u003c\/strong\u003e Yes, the 18-7944 is the filter element used in Sierra's 1\/4 inch aluminum short-filter kits, part numbers 18-7983-1 and 18-7983-2, alongside the 18-7853-1 bracket and 1\/4 inch pipe plugs.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988391538907,"sku":"SIE-18-7944","price":7.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/7__42587.1753840690.500.750.jpg?v=1785188945","url":"https:\/\/www.goodvibesmarina.com\/products\/fuel-water-separator-filter-for-mercury-mariner-outboards-replaces-35-807172-10-micron-3-88in-metal-bowl-90-gph","provider":"Good Vibes Marina","version":"1.0","type":"link"}