{"product_id":"sierra-10-micron-marine-fuel-water-separator-available-as-complete-kit-or-filter-with-bonus-pack","title":"Sierra 18-7983 Mercury Fuel\/Water Separator Filter - Available as Kit or Filter with Bonus Pack","description":"\u003cp\u003eThe Sierra 18-7983 is a 10 micron fuel\/water separator filter built for Mercury outboard fuel injected engines, designed to protect sensitive fuel injection components from water contamination and debris. The filter uses a 1\/4 inch aluminum short-filter housing and removes over 99.8 percent of emulsified water from gasoline while filtering out over 90 percent of particles as small as 10 microns. Rated to flow up to 90 gallons per hour, it supplies enough clean, dry fuel for high-demand outboard motors without restricting flow.\u003c\/p\u003e\u003cp\u003eEach build includes the core filter element (18-7944) along with the mounting base\/seal component (18-7853-1), giving you a complete water-separating assembly rather than just a replacement cartridge. It is engineered as a direct match for a wide range of Mercury outboards, cross-referencing to numerous Mercury OEM part numbers, so it installs as a factory-equivalent solution. The 18-7983 is offered in two configurations so you can choose the complete kit or a filter that comes bundled with a bonus item, depending on whether you are doing a first-time install or a routine filter change.\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 18-7983\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Fuel\/Water Separator Filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicron Rating:\u003c\/strong\u003e 10 Micron\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter Material:\u003c\/strong\u003e Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter Housing Length:\u003c\/strong\u003e Short Filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter Diameter\/Thread Size:\u003c\/strong\u003e 1\/4 inch (6.4mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow Rate:\u003c\/strong\u003e 90 Gallons Per Hour\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Removal Efficiency:\u003c\/strong\u003e Over 99.8 percent of emulsified water\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParticle Filtration Efficiency:\u003c\/strong\u003e Over 90 percent of particles as small as 10 micron\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e 1 filter element (18-7944) and 1 base\/seal component (18-7853-1)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit Type:\u003c\/strong\u003e Universal Fit for compatible Mercury outboards\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e Mercury 35-802893A4, Q4, 35-60494A4, 35-807172A4, 35-60494A1, 35-57250A1, 35-55501A1, 35-52456A1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSizes \u0026amp; Options\u003c\/h3\u003e\u003cp\u003eThe Sierra 18-7983 line is available in two configurations. The Fuel\/Water Separator Kit is the complete assembly, ideal for a first-time installation or when the mounting base needs replacing along with the filter. The Filter with Bonus Pack version is intended for buyers who already have the base assembly installed and need a replacement filter, and it ships with an extra bonus item included. Choose based on whether you need the full assembly or just a filter replacement.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat micron rating does the Sierra 18-7983 filter use?\u003c\/strong\u003e The Sierra 18-7983 fuel\/water separator filter uses a 10 micron element, which is over 90 percent efficient at removing particles as small as 10 microns from the fuel stream.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much water can the 18-7983 remove from fuel?\u003c\/strong\u003e It removes over 99.8 percent of emulsified water from gasoline, protecting fuel injected engines from water-related damage.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the flow rate of the Sierra 18-7983?\u003c\/strong\u003e This filter flows at up to 90 gallons per hour, enough capacity to feed high-demand outboard motors without restricting fuel delivery.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat Mercury OEM part numbers does the 18-7983 replace?\u003c\/strong\u003e The 18-7983 cross-references to Mercury 35-802893A4, Q4, 35-60494A4, 35-807172A4, 35-60494A1, 35-57250A1, 35-55501A1, and 35-52456A1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size fitting does this filter use?\u003c\/strong\u003e The Sierra 18-7983 has a 1\/4 inch (6.4mm) fitting size and uses an aluminum short-filter housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I choose the Kit or the Filter with Bonus Pack?\u003c\/strong\u003e Choose the Fuel\/Water Separator Kit if you need the complete assembly including the base\/seal component, such as for a first-time installation; choose the Filter with Bonus Pack if you already have the base installed and just need a replacement filter, since it comes with an extra bonus item included.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included with the 18-7983 kit?\u003c\/strong\u003e The kit configuration of the Sierra 18-7983 includes one filter element (18-7944) and one base\/seal component (18-7853-1).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-7983 a genuine Sierra part or an aftermarket equivalent?\u003c\/strong\u003e The 18-7983 is manufactured by Sierra as a direct-fit aftermarket replacement engineered to Mercury OEM specifications, not a repackaged factory part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the filter housing made of?\u003c\/strong\u003e Both configurations of the 18-7983 use an aluminum outer housing in the short-filter length.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this filter work with fuel injected outboard engines?\u003c\/strong\u003e Yes, the Sierra 18-7983 is designed specifically to protect sensitive inboard, sterndrive, and outboard fuel injection systems from water and particulate contamination.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the 18-7983 different from other Sierra fuel\/water separators like the 18-7982-1?\u003c\/strong\u003e The 18-7983 uses a short aluminum filter housing with a 1\/4 inch fitting and a 10 micron rating, distinguishing it from other Sierra separators that use a tall housing, a different fitting size, or stainless steel construction.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the filter need to be replaced on a schedule?\u003c\/strong\u003e Fuel\/water separator filters like the Sierra 18-7983 are a routine maintenance item and should be replaced periodically as part of regular engine service to maintain the rated 90 gallon-per-hour flow and filtration efficiency.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Kit","offer_id":48988057075931,"sku":"SIE-18-7983-1","price":41.73,"currency_code":"USD","in_stock":true},{"title":"Filter with Bonus Pack","offer_id":48988057108699,"sku":"SIE-18-7983-2","price":43.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-7983-2__23442.1739458911.500.750.jpg?v=1785188658","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-10-micron-marine-fuel-water-separator-available-as-complete-kit-or-filter-with-bonus-pack","provider":"Good Vibes Marina","version":"1.0","type":"link"}