{"product_id":"kunoanz-water-pump-impeller-kit-for-yamaha-9-9-15-hp-2-4-stroke-63v-w0078-rubber-impeller-seal-kit","title":"KUNOANZ Water Pump Impeller Kit for Yamaha 9.9\/15 HP 2- \u0026 4-Stroke (63V-W0078) — Rubber Impeller \u0026 Seal Kit","description":"\u003cp\u003e\u003cstrong\u003eKUNOANZ 63V-W0078-01-00 is a replacement water pump impeller kit engineered to fit Yamaha 9.9 and 15 HP 2- and 4-stroke outboards (1996–2024), restoring cooling flow with OEM-compatible parts.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen an outboard’s cooling system shows signs of reduced flow, overheating, or visible impeller damage, replacing the impeller and seal kit is a common maintenance step. This KUNOANZ kit corresponds to Yamaha OEM numbers 63V-W0078-00-00\/01-00 and fits many Sierra and aftermarket cross-references. The components are molded from durable rubber designed for repeated freshwater and saltwater immersion, and the kit targets 2-cylinder 9.9 and 15 HP engines produced across multiple model years.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I know this kit fits my Yamaha outboard?\u003c\/h3\u003e\n\u003cp\u003eConfirm fitment by checking the engine nameplate and comparing OEM part numbers. This KUNOANZ kit replaces Yamaha references 63V-W0078-00-00, 63V-W0078-01-00 and similar numbers used by Sierra and Mallory, so matching those codes ensures compatibility.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits Yamaha 9.9 and 15 HP 2\/4-stroke, 2-cylinder models (1996–2024)\u003c\/li\u003e\n  \u003cli\u003eReplaces OEM 63V-W0078-00-00, 63V-W0078-01-00, 63V-44301-00-00\u003c\/li\u003e\n  \u003cli\u003eCross-references Sierra 18-3410 \/ 18-3412 and Mallory 9-48609 \/ 9-48617\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat parts are included and what materials are used?\u003c\/h3\u003e\n\u003cp\u003eThe kit typically contains the impeller, gaskets, O-rings and a faceplate or seal components needed for a single repair, made to match original dimensions. Materials focus on marine-grade rubber for the impeller and corrosion-resistant seals to handle prolonged exposure to water.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-quality rubber impeller molded for flexibility and wear resistance\u003c\/li\u003e\n  \u003cli\u003eGaskets and O-rings sized to OEM specifications for leak prevention\u003c\/li\u003e\n  \u003cli\u003eHardware and backing components to restore proper pump clearance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow difficult is installation and what tools will I need?\u003c\/h3\u003e\n\u003cp\u003eReplacement is a routine boat-maintenance job for someone comfortable with basic mechanical tasks. Access to the lower unit and common hand tools is required; some models need the propeller removed and the water pump housing exposed.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBasic tools: socket set, screwdrivers, pliers and marine grease\u003c\/li\u003e\n  \u003cli\u003eOptional: impeller puller or alignment tool depending on model\u003c\/li\u003e\n  \u003cli\u003eService manual recommended for torque specs and clearance checks\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance benefits should I expect after replacing the impeller?\u003c\/h3\u003e\n\u003cp\u003eA properly installed impeller restores designed coolant flow, which helps maintain normal engine operating temperatures and prevents premature wear caused by overheating. It also reduces the risk of cavitation and ensures consistent water pressure through the cooling passages.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRestores manufacturer-level cooling flow for engine protection\u003c\/li\u003e\n  \u003cli\u003eReduces overheating risk when installed correctly\u003c\/li\u003e\n  \u003cli\u003eImproves water pump reliability between regular maintenance intervals\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This KUNOANZ impeller kit is aimed at boat owners, marine mechanics and DIY enthusiasts who run Yamaha 9.9 or 15 HP outboards and need a reliable, OEM-compatible replacement. If you perform routine seasonal maintenance, repair a water pump showing reduced flow, or are preparing a vessel for extended use, this kit supplies the core components to return the lower-unit cooling system to serviceable condition. Always verify the engine nameplate and part numbers before purchase to avoid incorrect fitment.\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: Does this impeller kit fit my Yamaha 15 HP outboard?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: If your engine lists OEM part numbers like 63V-W0078-00-00\/01-00 or is a 9.9\/15 HP 2-cylinder (1996–2024), this kit is compatible.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I replace the impeller?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Inspect annually and replace at first signs of chafing, cracked blades, or reduced water flow; interval depends on usage and water conditions.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"KUNOANZ","offers":[{"title":"Default Title","offer_id":48085922939038,"sku":"B0C7RL84LZ","price":43.92,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/kunoanz-impeller-kit-front-packaging.jpg?v=1785880641","url":"https:\/\/northtrailauto.ca\/products\/kunoanz-water-pump-impeller-kit-for-yamaha-9-9-15-hp-2-4-stroke-63v-w0078-rubber-impeller-seal-kit","provider":"North Trail Auto","version":"1.0","type":"link"}