{"product_id":"fuel-filter-for-mercury-mariner-6-25-hp-outboards-replaces-35-87946a3-sierra-18-7802","title":"Sierra 18-7802 Fuel Filter, Replaces 35-87946A3, for Mercury\/Mariner Outboard 6 HP thru 25 HP","description":"\u003cp\u003eThe Sierra 18-7802 is a replacement fuel filter engineered for Mercury and Mariner outboard motors from 6 HP thru 25 HP. It is built to fit the under-cowl fuel filter assemblies that use a screw-on bowl, restoring clean fuel delivery to the carburetor and protecting the engine from debris and contaminants that can cause rough running, stalling, or fuel system wear. The filter includes the filter screen and a Viton seal, giving it strong resistance to fuel and heat exposure in the demanding marine environment.\u003c\/p\u003e\u003cp\u003eSierra manufactures this filter to meet or exceed the performance of the original equipment part it replaces, and it is designed as a direct fit for the outboard fuel filter housings covered by this part number. Whether you are performing routine maintenance or replacing a clogged or deteriorated filter, the 18-7802 restores factory-level fuel filtration so your outboard receives consistent, clean fuel flow.\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 18-7802\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Fuel Filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.02 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicron Rating:\u003c\/strong\u003e 75\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Fuel filter screen and Viton seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Mercury\/Mariner outboard, 6 HP thru 25 HP\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury\/Mariner outboard motors, 6 HP thru 25 HP\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e35-87946A3\u003c\/li\u003e\n\u003cli\u003e35-87946-Q3\u003c\/li\u003e\n\u003cli\u003e35-87946-Q4\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-7802 fuel filter fit?\u003c\/strong\u003e The Sierra 18-7802 fits Mercury\/Mariner outboard motors from 6 HP thru 25 HP.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-7802 a direct OEM replacement?\u003c\/strong\u003e Yes, the 18-7802 replaces OEM numbers 35-87946A3, 35-87946-Q3, and 35-87946-Q4, and it is designed to meet or exceed the performance of the original filter it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included with the Sierra 18-7802?\u003c\/strong\u003e The Sierra 18-7802 includes the fuel filter screen and a Viton seal for the under-cowl fuel filter assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat micron rating does this fuel filter have?\u003c\/strong\u003e The 18-7802 has a micron rating of 75, filtering out particulate contamination before it reaches the carburetor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-7802 fuel filter weigh?\u003c\/strong\u003e This filter weighs 0.02 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat type of seal does the 18-7802 use?\u003c\/strong\u003e A Viton seal is used on the Sierra 18-7802, chosen for its resistance to fuel and heat in marine applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-7802 work with screw-on bowl fuel filter housings?\u003c\/strong\u003e Yes, the 18-7802 is built for Mercury under-cowl fuel filter assemblies that use a screw-on bowl.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich OEM part numbers does the Sierra 18-7802 cross-reference to?\u003c\/strong\u003e The 18-7802 replaces OEM numbers 35-87946A3, 35-87946-Q3, and 35-87946-Q4.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-7802 suitable for regular maintenance replacement?\u003c\/strong\u003e Yes, the 18-7802 is intended as a routine replacement fuel filter for Mercury\/Mariner outboards in the 6 HP thru 25 HP range.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy replace a fuel filter like the 18-7802 regularly?\u003c\/strong\u003e A worn or clogged fuel filter can restrict fuel flow and cause rough running or stalling; replacing it with the Sierra 18-7802 restores clean fuel delivery to the carburetor.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988388196571,"sku":"SIE-18-7802","price":7.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-7802_lg__39515.1558130428.500.750.jpg?v=1785188302","url":"https:\/\/www.goodvibesmarina.com\/products\/fuel-filter-for-mercury-mariner-6-25-hp-outboards-replaces-35-87946a3-sierra-18-7802","provider":"Good Vibes Marina","version":"1.0","type":"link"}