{"title":"Tohatsu MFS5 Outboard Parts - All Years \u0026 Models","description":"\u003c!-- AUTO:LEAF_INDEX:START --\u003e\n\u003cnav class=\"breadcrumb\" style=\"font-size:14px;color:#555;margin-bottom:16px;\"\u003e← Browse: \u003ca href=\"\/collections\/tohatsu-outboard-motor-parts\"\u003eTohatsu Parts\u003c\/a\u003e\u003c\/nav\u003e\n\u003ch2\u003eTohatsu MFS5 Outboard Parts Catalog\u003c\/h2\u003e\n\u003cp\u003eFind quality replacement and aftermarket parts for your \u003cstrong\u003eTohatsu MFS5\u003c\/strong\u003e outboard motor. Select your specific year and serial number range below.\u003c\/p\u003e\n\u003ch3\u003eBrowse by Year \u0026amp; Model (8 variants)\u003c\/h3\u003e\n\u003cul class=\"model-list\"\u003e\n \u003cli\u003e\u003ca href=\"\/collections\/tohatsu-mfs5c-lpg-2017\"\u003eMFS5C-LPG 2017\u003c\/a\u003e\u003c\/li\u003e\n \u003cli\u003e\u003ca href=\"\/collections\/tohatsu-mfs5c-lpg-2018\"\u003eMFS5C-LPG 2018\u003c\/a\u003e\u003c\/li\u003e\n \u003cli\u003e\u003ca href=\"\/collections\/tohatsu-mfs5c-lpg-2019\"\u003eMFS5C-LPG 2019\u003c\/a\u003e\u003c\/li\u003e\n \u003cli\u003e\u003ca href=\"\/collections\/tohatsu-mfs5d-lpg-2020\"\u003eMFS5D-LPG 2020\u003c\/a\u003e\u003c\/li\u003e\n \u003cli\u003e\u003ca href=\"\/collections\/tohatsu-mfs5d-lpg-2021\"\u003eMFS5D-LPG 2021\u003c\/a\u003e\u003c\/li\u003e\n \u003cli\u003e\u003ca href=\"\/collections\/tohatsu-mfs5d-lpg-2022\"\u003eMFS5D-LPG 2022\u003c\/a\u003e\u003c\/li\u003e\n \u003cli\u003e\u003ca href=\"\/collections\/tohatsu-mfs5d-lpg-2023\"\u003eMFS5D-LPG 2023\u003c\/a\u003e\u003c\/li\u003e\n \u003cli\u003e\u003ca href=\"\/collections\/tohatsu-mfs5d-lpg-2024\"\u003eMFS5D-LPG 2024\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- AUTO:LEAF_INDEX:END --\u003e","products":[{"product_id":"47-16154-3-outboard-rubber-impeller-with-key-pin-for-mercury-mariner-4-s-2-2-5-3-5-jlm-marine","title":"47-16154-3 Outboard Rubber Impeller with Key\/Pin for Mercury Mariner 4-S 2 2.5 3.5 | JLM Marine","description":"\u003ch2\u003eOutboard Rubber Impeller with Key\/Pin – Fits Mercury Mariner 4-Stroke 2, 2.5, 3.5 HP (Carb)\u003c\/h2\u003e\n\n\u003cp\u003eThis aftermarket rubber impeller is precision-engineered to fit Mercury Mariner 4-stroke 2 HP, 2.5 HP, and 3.5 HP carbureted outboard engines. Designed to deliver reliable water pump performance, this impeller ensures consistent cooling to protect your engine from overheating during operation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDirect Replacement for OEM Part Number:\u003c\/strong\u003e 47-16154-3. This impeller comes complete with the drive key\/pin for straightforward installation.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eComplete kit includes rubber impeller and drive key\/pin\u003c\/li\u003e\n\u003cli\u003eDesigned for small 4-stroke carbureted outboards\u003c\/li\u003e\n\u003cli\u003eDrop-in replacement for OEM part 47-16154-3\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Mariner\u003c\/td\u003e\n\u003ctd\u003e47-16154-3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Mariner\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eCarbureted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Mariner\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2.5 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eCarbureted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Mariner\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3.5 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eCarbureted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Part Number\u003c\/td\u003e\n\u003ctd\u003e47-16154-3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eRubber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eWater Pump Impeller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine Type\u003c\/td\u003e\n\u003ctd\u003e4-Stroke Carbureted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003eOutboard Rubber Impeller\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003eDrive Key \/ Pin\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n\u003cli\u003eDisconnect the fuel line and remove the lower unit from the outboard engine. Refer to your service manual for specific disassembly instructions.\u003c\/li\u003e\n\u003cli\u003eRemove the water pump housing cover and carefully extract the old impeller. Inspect the housing and plate for damage or corrosion.\u003c\/li\u003e\n\u003cli\u003eClean the impeller cavity thoroughly, removing any debris or old gasket material. Ensure all surfaces are smooth and free of contaminants.\u003c\/li\u003e\n\u003cli\u003eLubricate the new impeller blades with glycerin or water pump grease (never petroleum-based products). This prevents blade damage during installation.\u003c\/li\u003e\n\u003cli\u003eInsert the drive key\/pin into the impeller hub slot, ensuring it is fully seated. Verify the key is correctly positioned before proceeding.\u003c\/li\u003e\n\u003cli\u003eCarefully compress the impeller blades and slide the impeller into the pump housing, rotating in the correct direction. Ensure all blades are properly aligned.\u003c\/li\u003e\n\u003cli\u003eInstall a new water pump gasket and reassemble the pump housing cover. Torque fasteners to manufacturer specifications.\u003c\/li\u003e\n\u003cli\u003eReinstall the lower unit onto the engine, aligning the driveshaft and water tube properly. Double-check all connections are secure.\u003c\/li\u003e\n\u003cli\u003eReconnect the fuel line and flush the cooling system with fresh water. Run the engine briefly to verify proper water flow from the telltale indicator.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this impeller fits my Mercury Mariner engine?\u003c\/strong\u003e\u003cbr\u003e\nA: Verify your engine is a 4-stroke carbureted model rated at 2, 2.5, or 3.5 HP. Cross-check your original impeller against OEM part number 47-16154-3. If your part number matches or your engine model is listed in our compatibility table, this impeller will fit.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace my water pump impeller?\u003c\/strong\u003e\u003cbr\u003e\nA: Most manufacturers recommend replacing the impeller every 2–3 years or 200–300 hours of operation, whichever comes first. If you run in sandy or debris-filled water, or if the engine has overheated, inspect and replace the impeller more frequently.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs that my impeller is failing?\u003c\/strong\u003e\u003cbr\u003e\nA: Common symptoms include reduced or no water flow from the telltale\/pilot hole, engine overheating, weak stream pressure, or visible damage to impeller blades. If you notice any of these signs, inspect and replace the impeller immediately to prevent engine damage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I use petroleum-based grease when installing the impeller?\u003c\/strong\u003e\u003cbr\u003e\nA: No. Petroleum-based products will damage the rubber blades. Always use glycerin, water pump grease, or a lubricant specifically designed for rubber impellers to ensure safe installation and optimal performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this an OEM impeller or an aftermarket replacement?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n\u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":49587706069305,"sku":"17IT001-K","price":21.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/Water_Pump_Impeller_for_Tohatsu_Nissan_25-6_HP_18-3098_-_JLM_MARINE-8288311.jpg?v=1754991725"},{"product_id":"water-pump-impeller-for-tohatsu-mercury-evinrude-impeller-3-to-5-hp-2-stroke-2-5-4-5-6-hp-4-stroke-1-cyl-3c8-65021-2-3c8650210m-3c8650211m-3c8650212m","title":"3C8-65021-2 Water Pump Impeller for Nissan Tohatsu 40D 50D | JLM Marine","description":"\u003ch2\u003eWater Pump Impeller for Nissan Tohatsu 40D 50D – OEM 3C8-65021-2\u003c\/h2\u003e\n\n\u003cp\u003eThis \u003cstrong\u003ewater pump impeller\u003c\/strong\u003e is engineered for \u003cstrong\u003eNissan and Tohatsu 2-Stroke 40D and 50D outboard motors\u003c\/strong\u003e. Designed to maintain optimal cooling performance, this impeller ensures reliable water flow through your engine's cooling system, protecting against overheating and extending engine life.\u003c\/p\u003e\n\n\u003cp\u003eThis replacement impeller directly replaces OEM part numbers \u003cstrong\u003e3C8-65021-2\u003c\/strong\u003e, 3C8650212, and 3C8650212M, providing a cost-effective solution for routine maintenance or emergency repairs.\u003c\/p\u003e\n\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003e6-blade design\u003c\/strong\u003e with neoprene construction and nylon hub for durability\u003c\/li\u003e\n \u003cli\u003ePrecise OEM dimensions: 50.40 mm diameter, 17.20 mm shaft\u003c\/li\u003e\n \u003cli\u003eFits both 2-Stroke and 4-Stroke Nissan\/Tohatsu 40-50 HP models (2002-2017)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\n\u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eNissan \/ Tohatsu\u003c\/td\u003e\n \u003ctd\u003e3C8-65021-2\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eNissan \/ Tohatsu\u003c\/td\u003e\n \u003ctd\u003e3C8650212\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eNissan \/ Tohatsu\u003c\/td\u003e\n \u003ctd\u003e3C8650212M\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n \u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eNissan \/ Tohatsu\u003c\/td\u003e\n \u003ctd\u003e40D\u003c\/td\u003e\n \u003ctd\u003e40 HP\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e2002-2017\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eNissan \/ Tohatsu\u003c\/td\u003e\n \u003ctd\u003e50D\u003c\/td\u003e\n \u003ctd\u003e50 HP\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e2002-2017\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eNissan\u003c\/td\u003e\n \u003ctd\u003eMD40A, MD40B, MD40B2\u003c\/td\u003e\n \u003ctd\u003e40 HP\u003c\/td\u003e\n \u003ctd\u003e2-Stroke \u0026amp; 4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2002-2017\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eNissan\u003c\/td\u003e\n \u003ctd\u003eNSD40A, NSD40B, NSD40B2\u003c\/td\u003e\n \u003ctd\u003e40 HP\u003c\/td\u003e\n \u003ctd\u003e2-Stroke \u0026amp; 4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2002-2017\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eNissan \/ Tohatsu\u003c\/td\u003e\n \u003ctd\u003eM40D2, NS40D2\u003c\/td\u003e\n \u003ctd\u003e40 HP\u003c\/td\u003e\n \u003ctd\u003e2-Stroke \u0026amp; 4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2002-2017\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eNissan \/ Tohatsu\u003c\/td\u003e\n \u003ctd\u003eMFS40A, NSF40A\u003c\/td\u003e\n \u003ctd\u003e40 HP\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2002-2017\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eNissan\u003c\/td\u003e\n \u003ctd\u003eMD50A, MD50B, MD50B2\u003c\/td\u003e\n \u003ctd\u003e50 HP\u003c\/td\u003e\n \u003ctd\u003e2-Stroke \u0026amp; 4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2002-2017\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eNissan\u003c\/td\u003e\n \u003ctd\u003eNSD50A, NSD50B, NSD50B2\u003c\/td\u003e\n \u003ctd\u003e50 HP\u003c\/td\u003e\n \u003ctd\u003e2-Stroke \u0026amp; 4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2002-2017\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eNissan \/ Tohatsu\u003c\/td\u003e\n \u003ctd\u003eNS50D2, M50D2\u003c\/td\u003e\n \u003ctd\u003e50 HP\u003c\/td\u003e\n \u003ctd\u003e2-Stroke \u0026amp; 4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2002-2017\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eNissan \/ Tohatsu\u003c\/td\u003e\n \u003ctd\u003eNSF50A, MFS50A\u003c\/td\u003e\n \u003ctd\u003e50 HP\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2002-2017\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eSpecification\u003c\/th\u003e\n \u003cth\u003eValue\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eOEM Part Number\u003c\/td\u003e\n \u003ctd\u003e3C8-65021-2 \/ 3C8650212 \/ 3C8650212M\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eNumber of Blades\u003c\/td\u003e\n \u003ctd\u003e6\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOverall Diameter\u003c\/td\u003e\n \u003ctd\u003e50.40 mm \/ 1.99 inch\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eShaft Diameter\u003c\/td\u003e\n \u003ctd\u003e17.20 mm \/ 0.68 inch\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMaterial\u003c\/td\u003e\n \u003ctd\u003eNeoprene with Nylon Hub\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eWeight\u003c\/td\u003e\n \u003ctd\u003e20 g\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eApplication\u003c\/td\u003e\n \u003ctd\u003eNissan \u0026amp; Tohatsu 40\/50 HP 2-Stroke \u0026amp; 4-Stroke Outboards\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cul\u003e\n \u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e1 × Outboard Impeller\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n \u003cli\u003e\n\u003cstrong\u003eDisconnect the fuel line and remove the engine cowling\u003c\/strong\u003e to access the lower unit. Ensure the engine is off and cool before beginning work.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRemove the water pump housing bolts\u003c\/strong\u003e and carefully separate the housing from the lower unit. Take note of gasket orientation.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eExtract the old impeller\u003c\/strong\u003e using needle-nose pliers or an impeller removal tool. Inspect the pump housing for debris, scoring, or wear.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eClean the pump chamber thoroughly\u003c\/strong\u003e with a soft cloth and remove any old gasket material. Check the wear plate and housing for damage.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eLubricate the new impeller blades\u003c\/strong\u003e with water pump grease or dish soap to ease installation and prevent tearing.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInsert the new impeller into the housing\u003c\/strong\u003e, ensuring the blades curve in the correct rotational direction (refer to your service manual).\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInstall a new gasket and wear plate\u003c\/strong\u003e if included or if the originals show signs of wear.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eReassemble the water pump housing\u003c\/strong\u003e, aligning all bolt holes. Torque bolts to manufacturer specifications in a crisscross pattern.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eReinstall the lower unit\u003c\/strong\u003e onto the engine, ensuring all seals and gaskets are properly seated.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eReconnect the fuel line and replace the cowling\u003c\/strong\u003e. Double-check all fasteners are secure.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRun the engine in a test tank or on-water\u003c\/strong\u003e and confirm strong water flow from the telltale (pee hole). Monitor engine temperature during initial operation.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInspect for leaks around the pump housing\u003c\/strong\u003e and verify consistent cooling performance under load.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this impeller fits my Nissan or Tohatsu engine?\u003c\/strong\u003e\u003cbr\u003e\nA: Cross-reference your engine model and year with the compatibility table above. Verify your original impeller's OEM part number matches 3C8-65021-2, 3C8650212, or 3C8650212M. Measure the diameter (50.40 mm) and blade count (6) to ensure a precise match.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace my water pump impeller?\u003c\/strong\u003e\u003cbr\u003e\nA: Most manufacturers recommend replacing the impeller every 2–3 years or 200–300 hours of operation, whichever comes first. If you notice overheating, weak telltale flow, or the engine has been run dry, inspect and replace the impeller immediately.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs of a failing impeller?\u003c\/strong\u003e\u003cbr\u003e\nA: Common symptoms include weak or absent water discharge from the telltale, engine overheating alarms, steam from the cowling, or reduced performance. Inspect the impeller if you experience any of these issues.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this impeller on both 2-stroke and 4-stroke engines?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes, this impeller is compatible with both 2-stroke and 4-stroke Nissan and Tohatsu 40–50 HP models manufactured between 2002 and 2017, as listed in the compatibility table.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between this aftermarket impeller and the OEM version?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n \u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n \u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":50488454086969,"sku":"17IT007","price":8.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/17IT0071_c543a66d-117b-47c4-b0e0-d98ac8d13465.jpg?v=1755252007"},{"product_id":"water-pump-impeller-for-mercury-tohatsu-evinrude-impeller-3-to-5-hp-2-stroke-2-5-4-5-6-hp-4-stroke-1-cyl-47-161543","title":"369-65021-1 Water Pump Impeller for Nissan Tohatsu 2HP 2.5HP 3.5HP 4HP 5HP 6HP 4-Stroke | JLM Marine","description":"\u003ch2\u003eWater Pump Impeller for Nissan Tohatsu 2HP 2.5HP 3.5HP 4HP 5HP 6HP 4-Stroke Outboard Motors\u003c\/h2\u003e\n\n\u003cp\u003eThis premium aftermarket water pump impeller is designed for \u003cstrong\u003eNissan and Tohatsu 2HP, 2.5HP, 3.5HP, 4HP, 5HP, and 6HP 4-stroke outboard engines\u003c\/strong\u003e. Engineered to meet OEM specifications, this impeller ensures reliable cooling system performance and protects your engine from overheating during operation.\u003c\/p\u003e\n\n\u003cp\u003eThis impeller directly replaces OEM part numbers \u003cstrong\u003e369-65021-1\u003c\/strong\u003e and \u003cstrong\u003e47-16154-3\u003c\/strong\u003e, providing a cost-effective solution for maintaining your outboard's water pump assembly.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eConstructed from durable \u003cstrong\u003eneoprene with a nylon hub\u003c\/strong\u003e for long-lasting performance\u003c\/li\u003e\n\u003cli\u003eFeatures \u003cstrong\u003e6 precision-molded blades\u003c\/strong\u003e for optimal water flow\u003c\/li\u003e\n\u003cli\u003eLubricate with silicone grease, glycerine, or dish soap during installation (lubricant not included)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan \/ Tohatsu\u003c\/td\u003e\n\u003ctd\u003e369-65021-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan \/ Tohatsu\u003c\/td\u003e\n\u003ctd\u003e47-16154-3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan \/ Tohatsu\u003c\/td\u003e\n\u003ctd\u003e369650211\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan \/ Tohatsu\u003c\/td\u003e\n\u003ctd\u003e369650211M\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eHP\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eMFS2A\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eNSF2A\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003e2.5\u003c\/td\u003e\n\u003ctd\u003eMFS2.5A, MFS2.5B\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003e2.5\u003c\/td\u003e\n\u003ctd\u003eNSF2.5A, NSF2.5B\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003e3.5\u003c\/td\u003e\n\u003ctd\u003eM3.5B, M3.5B2\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003e3.5\u003c\/td\u003e\n\u003ctd\u003eNS3.5B, NS3.5B2\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003e3.5\u003c\/td\u003e\n\u003ctd\u003eMFS3.5A, MFS3.5B\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003e3.5\u003c\/td\u003e\n\u003ctd\u003eNSF3.5A, NSF3.5B\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003eMFS4A, MFS4A2, MFS4B, MFS4C\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003eNSF4A, NSF4A2, NSF4B, NSF4C\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003eM5B\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003eNS5B\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003eMFS5A, MFS5A2, MFS5B, MFS5C\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003eNSF5A, NSF5A2, NSF5B, NSF5C\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003eMFS6A, MFS6B, MFS6C\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003eNSF6A, NSF6B, NSF6C\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eMFS2A\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eNSF2A\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e2.5\u003c\/td\u003e\n\u003ctd\u003eMFS2.5A, MFS2.5B\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e2.5\u003c\/td\u003e\n\u003ctd\u003eNSF2.5A, NSF2.5B\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e3.5\u003c\/td\u003e\n\u003ctd\u003eM3.5B, M3.5B2\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e3.5\u003c\/td\u003e\n\u003ctd\u003eNS3.5B, NS3.5B2\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e3.5\u003c\/td\u003e\n\u003ctd\u003eMFS3.5A, MFS3.5B\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e3.5\u003c\/td\u003e\n\u003ctd\u003eNSF3.5A, NSF3.5B\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003eMFS4A, MFS4A2, MFS4B, MFS4C\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003eNSF4A, NSF4A2, NSF4B, NSF4C\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003eM5B\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003eNS5B\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003eMFS5A, MFS5A2, MFS5B, MFS5C\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003eNSF5A, NSF5A2, NSF5B, NSF5C\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003eMFS6A, MFS6B, MFS6C\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003eNSF6A, NSF6B, NSF6C\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Blades\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Impeller Overall Diameter\u003c\/td\u003e\n\u003ctd\u003e33.60 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Shaft Insert Diameter\u003c\/td\u003e\n\u003ctd\u003e10.35 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eNeoprene with Nylon Hub\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eItem Weight\u003c\/td\u003e\n\u003ctd\u003e6 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cp\u003eYour purchase includes:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e1 × Outboard Impeller\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n\u003cli\u003eDisconnect the fuel line and remove the lower unit from the outboard motor following your engine's service manual.\u003c\/li\u003e\n\u003cli\u003eRemove the water pump housing cover and carefully extract the old impeller from the pump body.\u003c\/li\u003e\n\u003cli\u003eClean the pump housing thoroughly, removing any debris, old gasket material, or corrosion.\u003c\/li\u003e\n\u003cli\u003eApply a generous amount of silicone grease, glycerine, or dish soap to the new impeller blades and pump housing. This lubrication is critical for proper installation and initial operation.\u003c\/li\u003e\n\u003cli\u003eInstall the new impeller into the pump housing, ensuring the blades rotate in the correct direction (typically matching the drive shaft rotation).\u003c\/li\u003e\n\u003cli\u003eReplace the water pump housing cover and any worn gaskets or seals.\u003c\/li\u003e\n\u003cli\u003eReinstall the lower unit onto the outboard motor, ensuring proper alignment and torque specifications.\u003c\/li\u003e\n\u003cli\u003eReconnect the fuel line and perform a water flow test before operating the engine under load.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this impeller fits my engine?\u003c\/strong\u003e\u003cbr\u003e\nA: Cross-reference your engine's model number with the compatibility table above. Verify that your original impeller matches OEM part number 369-65021-1 or 47-16154-3 before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace my water pump impeller?\u003c\/strong\u003e\u003cbr\u003e\nA: Most manufacturers recommend replacing the impeller annually or every 200–300 hours of operation, whichever comes first. If you notice overheating, reduced water flow from the telltale, or visible blade damage, replace it immediately.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs of a failing impeller?\u003c\/strong\u003e\u003cbr\u003e\nA: Common symptoms include weak or no water flow from the telltale (pee hole), engine overheating, steam from the engine, or an overheating alarm. Inspect the impeller if you experience any of these issues.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can this impeller be used in both 2-stroke and 4-stroke engines?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes, this impeller is compatible with select Nissan and Tohatsu 2-stroke and 4-stroke models as listed in the compatibility table. Always verify your specific engine model before installation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Why is lubrication important during installation?\u003c\/strong\u003e\u003cbr\u003e\nA: Lubricating the impeller allows the blades to flex properly during installation and provides initial lubrication until water flow begins. Dry installation can damage the impeller blades and cause immediate failure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this an OEM or aftermarket part?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n\u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":50488835080505,"sku":"17IT001","price":11.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/17IT0011_0dc8836f-1498-48cd-bd0b-0cdc8bf62f2c.jpg?v=1754991283"},{"product_id":"water-pump-impeller-kit-for-mercury-2-5-3-5-hp-8m0181314","title":"8M0181314 Maintenance Service Kit for Mercury Mariner 2.5HP 3.5HP | JLM Marine","description":"\u003ch2\u003eMaintenance Service Kit for Mercury Mariner 2.5HP 3.5HP Outboard Engines – OEM 8M0181314\u003c\/h2\u003e\n\n\u003cp\u003eThis comprehensive maintenance service kit is designed for \u003cstrong\u003eMercury Mariner 2.5HP and 3.5HP outboard engines\u003c\/strong\u003e. It provides all the essential components needed for routine maintenance and service, helping to keep your engine running smoothly and reliably season after season.\u003c\/p\u003e\n\n\u003cp\u003eThis kit directly replaces \u003cstrong\u003eMercury Mariner Quicksilver part number 8M0181314\u003c\/strong\u003e and aftermarket equivalent \u003cstrong\u003e47-16154-3\u003c\/strong\u003e, ensuring broad compatibility with your original equipment.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eComplete service kit with impeller, thermostat, gaskets, seals, and hardware\u003c\/li\u003e\n\u003cli\u003eFits Mercury Mariner 2.5HP and 3.5HP outboard motors\u003c\/li\u003e\n\u003cli\u003eReplaces OEM 8M0181314 for cost-effective maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Mariner Quicksilver\u003c\/td\u003e\n\u003ctd\u003e8M0181314\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAftermarket\u003c\/td\u003e\n\u003ctd\u003e47-16154-3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Mariner\u003c\/td\u003e\n\u003ctd\u003e2.5HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Mariner\u003c\/td\u003e\n\u003ctd\u003e3.5HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Number\u003c\/td\u003e\n\u003ctd\u003e8M0181314\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReplaces\u003c\/td\u003e\n\u003ctd\u003eMercury Mariner Quicksilver 8M0181314, 47-16154-3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eMercury Mariner 2.5HP and 3.5HP Outboard Engines\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cp\u003eThis maintenance service kit includes the following components:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e1 x Impeller 47-16154-3\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e1 x Pin Key 28-16155\u003c\/li\u003e\n\u003cli\u003e1 x Thermostat 804540\u003c\/li\u003e\n\u003cli\u003e1 x Gasket 8035161\u003c\/li\u003e\n\u003cli\u003e1 x Oil Seal 26-95348\u003c\/li\u003e\n\u003cli\u003e2 x Drain Gasket 27-95220\u003c\/li\u003e\n\u003cli\u003e1 x O-ring 25-16131\u003c\/li\u003e\n\u003cli\u003e1 x Cotter Pin 95295\u003c\/li\u003e\n\u003cli\u003e2 x Pin 17-815111Q02\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreparation:\u003c\/strong\u003e Disconnect the fuel line and remove the engine cover. Ensure the engine is cool and positioned securely.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove Lower Unit:\u003c\/strong\u003e Drain the lower unit gear oil completely. Unbolt and carefully remove the lower unit from the engine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess Water Pump:\u003c\/strong\u003e Remove the water pump housing cover by unscrewing the retaining bolts. Take note of component orientation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove Old Impeller:\u003c\/strong\u003e Extract the old impeller, pin key, and gaskets. Inspect the housing for wear or corrosion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall New Components:\u003c\/strong\u003e Insert the new pin key 28-16155 into the drive shaft slot. Lubricate the new impeller with water or glycerin and install it carefully.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplace Gaskets \u0026amp; Seals:\u003c\/strong\u003e Install the new gasket 8035161, O-ring 25-16131, oil seal 26-95348, and drain gaskets 27-95220 in their respective positions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Thermostat:\u003c\/strong\u003e Place the new thermostat 804540 into its housing, ensuring proper seating and orientation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReassemble Water Pump:\u003c\/strong\u003e Reinstall the water pump housing with new gaskets. Torque bolts to manufacturer specifications in a cross pattern.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReattach Lower Unit:\u003c\/strong\u003e Align the lower unit with the drive shaft and secure with bolts. Refill with fresh lower unit gear oil.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure Hardware:\u003c\/strong\u003e Install cotter pin 95295 and pins 17-815111Q02 as specified in your engine's service manual.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest Operation:\u003c\/strong\u003e Reconnect fuel line, start the engine in a test tank, and confirm water discharge from the tell-tale. Check for leaks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinal Check:\u003c\/strong\u003e Reinstall engine cover and verify all fasteners are secure. Dispose of old parts responsibly.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I know if this kit fits my Mercury Mariner engine?\u003c\/strong\u003e\u003cbr\u003e\nA: This kit is designed specifically for Mercury Mariner 2.5HP and 3.5HP outboard engines. Verify your engine's horsepower rating on the identification plate and cross-reference the OEM part number 8M0181314 with your service manual or parts diagram.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace the impeller and service components?\u003c\/strong\u003e\u003cbr\u003e\nA: Mercury recommends replacing the water pump impeller annually or every 100 hours of operation, whichever comes first. Regular maintenance prevents overheating and extends engine life, especially in saltwater or sandy conditions.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs that my impeller needs replacement?\u003c\/strong\u003e\u003cbr\u003e\nA: Common symptoms include weak or no water flow from the tell-tale, engine overheating, steam from the engine, or loss of power. Inspect the impeller annually even if symptoms aren't present, as rubber degrades over time.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I install this kit myself or do I need a mechanic?\u003c\/strong\u003e\u003cbr\u003e\nA: If you have basic mechanical skills and tools, you can install this kit following the service manual. However, professional installation is recommended if you're unfamiliar with lower unit removal or water pump service procedures.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Does this kit include everything I need for a complete service?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes, this kit includes the impeller, thermostat, gaskets, seals, O-ring, pins, and hardware needed for routine water pump and cooling system maintenance. You may need fresh lower unit oil separately.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this an OEM part or aftermarket replacement?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n\u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":50489844531513,"sku":"23KM770","price":36.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/23KM770_1_a2fa708e-2112-4826-8210-e912b37d2963.jpg?v=1755251990"},{"product_id":"thermostat-for-tohatsu-mercury-2-6-hp-4-st-3h6-01030-0-804540-345-01030-0-3h6-01030-0","title":"18-3638 Outboard Thermostat for Mercury Mariner | JLM Marine","description":"\u003ch2\u003eThermostat for Mercury Mariner Outboard – Fits 2.5-6 HP Models\u003c\/h2\u003e\n\n\u003cp\u003eThis high-quality aftermarket thermostat is engineered to fit Mercury Mariner 2-stroke outboard engines ranging from 2.5 HP to 6 HP. Designed as a direct replacement for OEM part numbers 804540 and 853704, it ensures reliable temperature regulation for your outboard motor.\u003c\/p\u003e\n\n\u003cp\u003eThe kit includes both the thermostat and a rubber seal ring, providing everything needed for a complete installation. Compatible with Mercury Mariner 2.5-3.5 HP models (serial 0R131842 \u0026amp; Up) and 4-6 HP models (serial 0R411838 \u0026amp; Up).\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eComplete kit includes thermostat and rubber seal ring\u003c\/li\u003e\n\u003cli\u003eDirect replacement for OEM 804540 and 853704\u003c\/li\u003e\n\u003cli\u003eEnsures proper engine temperature control\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Mariner\u003c\/td\u003e\n\u003ctd\u003e804540\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Mariner\u003c\/td\u003e\n\u003ctd\u003e853704\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJLM Marine\u003c\/td\u003e\n\u003ctd\u003e18-3638\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Mariner\u003c\/td\u003e\n\u003ctd\u003eSerial 0R131842 \u0026amp; Up\u003c\/td\u003e\n\u003ctd\u003e2.5-3.5 HP\u003c\/td\u003e\n\u003ctd\u003e2-Stroke Outboards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Mariner\u003c\/td\u003e\n\u003ctd\u003eSerial 0R411838 \u0026amp; Up\u003c\/td\u003e\n\u003ctd\u003e4-6 HP\u003c\/td\u003e\n\u003ctd\u003e2-Stroke Outboards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Number\u003c\/td\u003e\n\u003ctd\u003e18-3638\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReplaces OEM Part Numbers\u003c\/td\u003e\n\u003ctd\u003e804540, 853704\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eMercury Mariner 2.5-6 HP Outboards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine Type\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e1 × Thermostat\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e1 × Ring Rubber Seal\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n\u003cli\u003eAllow the engine to cool completely before beginning work. Ensure the ignition is off and disconnect the battery if applicable.\u003c\/li\u003e\n\u003cli\u003eLocate the thermostat housing on your Mercury Mariner outboard engine. It is typically found near the cylinder head or water jacket outlet.\u003c\/li\u003e\n\u003cli\u003eRemove the mounting bolts securing the thermostat housing cover using the appropriate wrench or socket. Keep track of all fasteners.\u003c\/li\u003e\n\u003cli\u003eCarefully lift the housing cover and remove the old thermostat and seal. Inspect the housing for corrosion or debris and clean thoroughly.\u003c\/li\u003e\n\u003cli\u003eInstall the new rubber seal ring into the groove of the thermostat housing. Ensure it seats properly without twisting or pinching.\u003c\/li\u003e\n\u003cli\u003ePosition the new thermostat in the housing with the temperature-sensing element facing the correct direction (typically toward the engine block).\u003c\/li\u003e\n\u003cli\u003eReplace the housing cover and hand-tighten the mounting bolts. Then torque bolts to manufacturer specifications in a crisscross pattern to ensure even sealing.\u003c\/li\u003e\n\u003cli\u003eReconnect the battery if disconnected. Start the engine and allow it to reach operating temperature while monitoring for leaks around the thermostat housing.\u003c\/li\u003e\n\u003cli\u003eCheck coolant levels and top off if necessary. Verify that the engine temperature remains within normal operating range.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this thermostat fits my Mercury Mariner outboard?\u003c\/strong\u003e\u003cbr\u003e\nA: Check your engine's serial number plate. This thermostat fits 2.5-3.5 HP models with serial 0R131842 \u0026amp; up, and 4-6 HP models with serial 0R411838 \u0026amp; up. Cross-reference your current part number with OEM 804540 or 853704.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs that my thermostat needs replacement?\u003c\/strong\u003e\u003cbr\u003e\nA: Common symptoms include engine overheating, failure to reach operating temperature, excessive steam from the cooling system, or coolant leaks around the thermostat housing. If your temperature gauge reads abnormally high or low, inspect the thermostat.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace the thermostat on my outboard?\u003c\/strong\u003e\u003cbr\u003e\nA: Thermostats should be inspected annually and replaced every 2-3 years or sooner if symptoms of failure appear. Always replace the rubber seal when installing a new thermostat to prevent leaks.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Does this kit include the gasket or seal?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes, this package includes both the thermostat and the rubber seal ring required for proper installation. No additional seals need to be purchased separately.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this an OEM part or aftermarket?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n\u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":50579288228153,"sku":"23TH619","price":38.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/Thermostat_for_Tohatsu_Mercury_2-6_hp_4-St_3H6-01030-0_804540___345-01030-0_3H6-01030-0_-_JLM_MARINE-8291185.jpg?v=1755251566"},{"product_id":"thermostat-for-tohatsu-nissan-outboard-m-ns-3-5hp-40hp-50º-350-01030-346-01030-3h6-01030-0-346-01030","title":"Thermostat Repair Service Kit for Nissan Tohatsu MFS MF M MD 2-50 HP Outboard Motors 346-01030","description":"\u003ch2\u003eThermostat Repair Kit – Fits Tohatsu\/Nissan Outboard Motors 2-50 HP (Replaces 346-01030, 345-01030)\u003c\/h2\u003e\n\u003cp\u003eThis thermostat repair kit is designed for a wide range of Tohatsu and Nissan 2-stroke and 4-stroke outboard motors, from 2 to 50 HP. It includes the essential components to restore the engine's cooling system to its proper operating temperature.\u003c\/p\u003e\n\u003cp\u003eThis kit is a direct replacement for Tohatsu\/Nissan OEM part numbers: \u003cstrong\u003e346-01030-0, 346-01030-1, 345-01030-0, 345-01030-1, 350-01030-1, and 3H6-01030-0\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eComplete Kit:\u003c\/strong\u003e Includes the thermostat, housing gasket, and seals for a full replacement.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePrecise Temperature Control:\u003c\/strong\u003e Features a thermostat rated for \u003cstrong\u003e50°C (122°F)\u003c\/strong\u003e to ensure optimal engine performance.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSimple Installation:\u003c\/strong\u003e Designed as a direct, bolt-in replacement for the original factory parts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n \u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003e346-01030-0\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003e346-01030-1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003e345-01030-0\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003e345-01030-1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003e350-01030-1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003e3H6-01030-0\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n \u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003eMFS2\u003c\/td\u003e\n \u003ctd\u003e2\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e346-01030\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003eMFS2.5\u003c\/td\u003e\n \u003ctd\u003e2.5\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e346-01030\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003eMFS3.5\u003c\/td\u003e\n \u003ctd\u003e3.5\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e346-01030\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003eMFS4B, MFS4C\u003c\/td\u003e\n \u003ctd\u003e4\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e346-01030\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003eMFS5, MFS5B, MFS5C\u003c\/td\u003e\n \u003ctd\u003e5\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e346-01030\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003eMF6, MFS6B, MFS6C\u003c\/td\u003e\n \u003ctd\u003e6\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e346-01030\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003eM8B\u003c\/td\u003e\n \u003ctd\u003e8\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e346-01030\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003eM9.8B\u003c\/td\u003e\n \u003ctd\u003e9.8\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e346-01030\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003eM9.9D2\u003c\/td\u003e\n \u003ctd\u003e9.9\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e346-01030\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003eM15D2\u003c\/td\u003e\n \u003ctd\u003e15\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e346-01030\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003eM18E2\u003c\/td\u003e\n \u003ctd\u003e18\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e346-01030\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003eM25C3\u003c\/td\u003e\n \u003ctd\u003e25\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e346-01030\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003eM30A4\u003c\/td\u003e\n \u003ctd\u003e30\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e346-01030\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003eMD40B, MD40B2, M40C\u003c\/td\u003e\n \u003ctd\u003e40\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e346-01030\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003eMD50B, MD50B2\u003c\/td\u003e\n \u003ctd\u003e50\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e346-01030\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eNissan\u003c\/td\u003e\n \u003ctd\u003eNS3.5B2\u003c\/td\u003e\n \u003ctd\u003e3.5\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e346-01030\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eNissan\u003c\/td\u003e\n \u003ctd\u003eNS5B2\u003c\/td\u003e\n \u003ctd\u003e5\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e346-01030\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eNissan\u003c\/td\u003e\n \u003ctd\u003eNS6B2\u003c\/td\u003e\n \u003ctd\u003e6\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e346-01030\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eNissan\u003c\/td\u003e\n \u003ctd\u003eNS25D2\u003c\/td\u003e\n \u003ctd\u003e25\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e346-01030\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eNissan\u003c\/td\u003e\n \u003ctd\u003eNS30D2\u003c\/td\u003e\n \u003ctd\u003e30\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e346-01030\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eNissan\u003c\/td\u003e\n \u003ctd\u003eNS40D2\u003c\/td\u003e\n \u003ctd\u003e40\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e346-01030\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eSpecification\u003c\/th\u003e\n \u003cth\u003eValue\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n \u003ctd\u003eThermostat Repair\/Service Kit\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cstrong\u003eInstallation\u003c\/strong\u003e\u003c\/td\u003e\n \u003ctd\u003eDirect replacement\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cstrong\u003eTemperature Rating\u003c\/strong\u003e\u003c\/td\u003e\n \u003ctd\u003e50°C (122°F)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cstrong\u003eHousing Material\u003c\/strong\u003e\u003c\/td\u003e\n \u003ctd\u003eStainless steel housing with corrosion-resistant spring\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n \u003ctd\u003e50°C (122°F)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 x Thermostat (Replaces 346-01030)\u003c\/li\u003e\n \u003cli\u003e1 x Thermostat Housing Gasket\u003c\/li\u003e\n \u003cli\u003e2 x Thermostat Seals\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eEnsure the engine is off and cool. Disconnect the battery terminals.\u003c\/li\u003e\n \u003cli\u003eDrain the engine coolant completely to avoid spills.\u003c\/li\u003e\n \u003cli\u003eLocate the thermostat housing on the engine. It is typically a small dome-shaped cover with two or three bolts.\u003c\/li\u003e\n \u003cli\u003eCarefully remove the bolts and the housing cover. Note the orientation of the old thermostat.\u003c\/li\u003e\n \u003cli\u003eRemove the old thermostat and the gasket\/seals from the housing.\u003c\/li\u003e\n \u003cli\u003eThoroughly clean the mating surfaces of the housing and cover, removing any old gasket material.\u003c\/li\u003e\n \u003cli\u003eInstall the new thermostat in the \u003cstrong\u003esame orientation\u003c\/strong\u003e as the original.\u003c\/li\u003e\n \u003cli\u003ePlace the new gasket and seals into position.\u003c\/li\u003e\n \u003cli\u003eRe-install the housing cover and tighten the bolts to the torque specified by the manufacturer.\u003c\/li\u003e\n \u003cli\u003eRefill the cooling system with the appropriate coolant.\u003c\/li\u003e\n \u003cli\u003eReconnect the battery, start the engine, and carefully check for any leaks around the housing.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I confirm this kit fits my Tohatsu\/Nissan engine?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis kit is designed for a wide range of Tohatsu and Nissan 2-50 HP models. Please review the \"Compatible Engine Models\" table and cross-reference the OEM part numbers (e.g., 346-01030, 345-01030) with your original part to ensure an exact match.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat are the signs of a failing thermostat?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCommon symptoms include engine overheating at idle or low speeds, the engine taking too long to reach its normal operating temperature, or inconsistent readings on the temperature gauge.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the operating temperature of this thermostat?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis thermostat is rated to open at \u003cstrong\u003e50°C (122°F)\u003c\/strong\u003e, ensuring your engine warms up quickly and maintains the correct temperature for efficient performance and longevity.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOEM vs. Aftermarket?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow fast do you ship and how much does it cost?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is your warranty and return policy?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n \u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":50579312181561,"sku":"23TH616","price":23.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/23TH616_1_1f99fe24-5742-4094-b080-b914a992ae26.jpg?v=1755742231"}],"url":"https:\/\/jlmmarine.com\/collections\/tohatsu-mfs5-parts.oembed","provider":"JLM Marine Boat Parts Limited","version":"1.0","type":"link"}