{"product_id":"309-65021-2-47-95289-2-47-114812-water-pump-impeller-for-tohatsu-nissan-mercury-mariner-2-5a-3-5a-3-5b-jlm-marine","title":"309-65021-2 47-95289-2 47-114812 Water Pump Impeller for Tohatsu Nissan Mercury Mariner 2.5A 3.5A 3.5B | JLM Marine","description":"\u003ch2\u003eWater Pump Impeller – Fits Tohatsu Nissan Mercury Mariner 2.5HP 3.5HP Outboards\u003c\/h2\u003e\n\n\u003cp\u003eThis aftermarket water pump impeller is designed to fit \u003cstrong\u003eMariner 2HP, 2.5HP, and 3HP\u003c\/strong\u003e outboard engines, as well as compatible \u003cstrong\u003eTohatsu 2.5A, 3.5A, and 3.5B\u003c\/strong\u003e models. It provides reliable cooling system performance for your small outboard motor, ensuring consistent water flow and engine temperature regulation.\u003c\/p\u003e\n\n\u003cp\u003eThis impeller directly replaces OEM part numbers \u003cstrong\u003e309-65021-2\u003c\/strong\u003e, \u003cstrong\u003e47-95289-2\u003c\/strong\u003e, and \u003cstrong\u003e47-114812\u003c\/strong\u003e across Tohatsu, Nissan, Mercury, and Mariner brands, along with aftermarket references from CEF and Mallory.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eIncludes impeller with key\/pin for complete installation\u003c\/li\u003e\n\u003cli\u003eDesigned for small 2–3.5HP outboard engines\u003c\/li\u003e\n\u003cli\u003eDrop-in replacement for multiple OEM references\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\u003eTohatsu \/ Nissan\u003c\/td\u003e\n\u003ctd\u003e309-65021-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003e47-95289-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003e47-114812\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCEF\u003c\/td\u003e\n\u003ctd\u003e500396\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMallory\u003c\/td\u003e\n\u003ctd\u003e9-45312\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\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e2HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e2.5HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e3HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e2.5A\u003c\/td\u003e\n\u003ctd\u003e2.5HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e3.5A\u003c\/td\u003e\n\u003ctd\u003e3.5HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e3.5B\u003c\/td\u003e\n\u003ctd\u003e3.5HP\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\u003ePart Type\u003c\/td\u003e\n\u003ctd\u003eWater Pump Impeller\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\u003eIncludes\u003c\/td\u003e\n\u003ctd\u003eImpeller with Key \/ Pin\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\u003eOne (1) Outboard Rubber Impeller with Key \/ Pin\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. Note the direction of the impeller blades for proper orientation.\u003c\/li\u003e\n\u003cli\u003eClean the pump housing and inspect for wear, corrosion, or debris that could damage the new impeller.\u003c\/li\u003e\n\u003cli\u003eLubricate the new impeller with water pump grease or glycerin to ease installation and prevent dry starts.\u003c\/li\u003e\n\u003cli\u003eInsert the key\/pin into the impeller hub, aligning it with the drive shaft slot.\u003c\/li\u003e\n\u003cli\u003eCarefully slide the impeller onto the drive shaft, ensuring blades are oriented in the correct rotation direction.\u003c\/li\u003e\n\u003cli\u003eReinstall the pump housing cover, ensuring all gaskets and O-rings are properly seated.\u003c\/li\u003e\n\u003cli\u003eReassemble the lower unit to the outboard, torquing all fasteners to manufacturer specifications.\u003c\/li\u003e\n\u003cli\u003eReconnect the fuel line and run the engine in a test tank or on muffs to verify proper water flow from the tell-tale.\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 current impeller's OEM part number with the numbers listed above (309-65021-2, 47-95289-2, 47-114812). Additionally, confirm your engine model matches Mariner 2HP\/2.5HP\/3HP or Tohatsu 2.5A\/3.5A\/3.5B.\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, reduced water flow from the tell-tale, or visible wear\/cracks, 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 tell-tale indicator, engine overheating, steam from the engine, or loss of power. Inspect the impeller if you experience any of these issues.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Does this impeller come with the key or pin?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes, this package includes the impeller with the key\/pin required for installation on the drive shaft.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I install this myself or do I need a mechanic?\u003c\/strong\u003e\u003cbr\u003e\nA: If you have basic mechanical skills and follow your engine's service manual, you can install it yourself. However, professional installation is recommended to ensure proper orientation and avoid damage.\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":51940934779193,"sku":"17IT008K","price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/12_464a2c48-d6fc-406f-94cb-e43ed89bfa85.jpg?v=1771121404","url":"https:\/\/jlmmarine.com\/products\/309-65021-2-47-95289-2-47-114812-water-pump-impeller-for-tohatsu-nissan-mercury-mariner-2-5a-3-5a-3-5b-jlm-marine","provider":"JLM Marine Boat Parts Limited","version":"1.0","type":"link"}