{"product_id":"kefly-water-separating-fuel-filter-for-mercury-outboards-35-802893q01-cartridge-25-micron-protection","title":"Kefly Water-Separating Fuel Filter for Mercury Outboards — 35-802893Q01 Cartridge, 25-Micron Protection","description":"\u003cp\u003e\u003cstrong\u003eKefly 35-802893Q01 is a water-separating fuel filter designed to remove water and particulates from gasoline for Mercury Marine outboards, sterndrives, and compatible inboard engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eKeeping water and debris out of your fuel system prevents performance loss and helps extend engine life. This Kefly cartridge uses a 25-micron filtration element to trap contaminants before they reach injectors, carburetors, or fuel pumps. It installs in-line with existing fuel housings and replaces part number 35-802893Q01 for a reliable, OEM-friendly fit on most Mercury and MerCruiser gasoline marine engines (with noted exceptions).\u003c\/p\u003e\n\n\u003ch3\u003eHow does this filter protect my outboard during a day on the water?\u003c\/h3\u003e\n\u003cp\u003eThe filter separates free water from gasoline and captures solid particles, reducing the risk of engine sputtering, rough idle, or clogged injectors. By removing moisture and grit, it helps maintain consistent fuel flow and combustion.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e25-micron filter media traps small contaminants before they reach the engine.\u003c\/li\u003e\n  \u003cli\u003eWater-separating design collects free water for simple drainage or replacement.\u003c\/li\u003e\n  \u003cli\u003eDirect replacement for 35-802893Q01 ensures correct fit and proper sealing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich Mercury and MerCruiser engines will this cartridge fit?\u003c\/h3\u003e\n\u003cp\u003eThis Kefly filter is compatible with a broad range of Mercury Marine outboards and MerCruiser sterndrives and inboards, except for certain older and specific models. Always compare the part number and physical dimensions to your current filter before purchasing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits most Mercury outboards and MerCruiser sterndrives\/inboards.\u003c\/li\u003e\n  \u003cli\u003eNot compatible with 1992 MerCruiser 4.3L Gen II in-line setups.\u003c\/li\u003e\n  \u003cli\u003eNot for use with 1.6L Vazer and 3.0L MPI engines—verify model fitment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow often should I replace the water-separating fuel filter?\u003c\/h3\u003e\n\u003cp\u003eKefly recommends replacing the filter after one season or every 100 hours of operation under normal conditions. Replace sooner if you detect fuel contamination, water in the filter housing, or a sudden change in engine behavior.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStandard interval: one season or 100 hours of run time.\u003c\/li\u003e\n  \u003cli\u003eInspect filter housing for water or sediment during routine maintenance.\u003c\/li\u003e\n  \u003cli\u003eChange immediately if you notice engine sputter, loss of power, or fuel odor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the installation and maintenance basics?\u003c\/h3\u003e\n\u003cp\u003eInstallation is a straightforward swap of the cartridge element in your existing filter bowl or housing. Ensure the engine is off, relieve system pressure, and follow the engine manufacturer’s instructions for safe replacement and priming.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTurn off engine and vent pressure before removing the old cartridge.\u003c\/li\u003e\n  \u003cli\u003eInspect O-rings and replace if worn; lubricate seals lightly for proper seating.\u003c\/li\u003e\n  \u003cli\u003ePrime the fuel system after fitting the new cartridge to avoid air locks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Boaters, fishermen, and marine technicians who run Mercury Marine outboards, MerCruiser sterndrives, or compatible inboard engines and want a dependable, OEM-style replacement filter. If you need to guard engines against moisture and particulate contamination while preserving performance and reducing maintenance, the Kefly 35-802893Q01 cartridge is a practical, engine-friendly choice. Confirm model compatibility before purchase and follow scheduled replacement intervals to keep fuel systems clean and engines running smoothly.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this filter compatible with my 2005 Mercury outboard?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Likely yes if your engine uses a cartridge matching part number 35-802893Q01; confirm against your current filter and engine manual.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I clean and reuse the Kefly water-separating filter?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No—this is a replaceable 25-micron cartridge meant for one-season or 100-hour service to ensure proper filtration.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Kefly","offers":[{"title":"Default Title","offer_id":67591623868601,"sku":"B0FPWNJQNV","price":71.29,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/kefly-front-packaging-35-802893q01.jpg?v=1790556440","url":"https:\/\/redleafauto.ca\/products\/kefly-water-separating-fuel-filter-for-mercury-outboards-35-802893q01-cartridge-25-micron-protection","provider":"Redleaf Auto","version":"1.0","type":"link"}