{"product_id":"sierra-impeller-kit-25-hp-98-18-18-4562","title":"Sierra Impeller Kit 25 HP 98-18 #18-4562","description":"\u003ch2\u003eSierra 18-4562 Impellers \u0026amp; Parts\u003c\/h2\u003e\n\u003cp\u003eThe Sierra 18-4562 is a complete impeller kit designed for 25 horsepower outboard engines, covering model years 1998 through 2018. This comprehensive kit includes everything needed for a complete water pump impeller replacement, ensuring your engine's cooling system operates at peak efficiency.\u003c\/p\u003e\n\u003cp\u003eThe impeller is the heart of your outboard's raw water cooling system, drawing water from outside the boat and circulating it through the engine to prevent overheating. Manufactured to meet or exceed OEM specifications, this Sierra impeller kit features a high-quality rubber impeller with precisely molded blades that create the pumping action necessary for proper water flow. The kit typically includes the impeller, gaskets, seals, and other components required for a complete service.\u003c\/p\u003e\n\u003cp\u003eRegular impeller replacement is one of the most critical maintenance tasks for outboard engines. Marine engine manufacturers typically recommend impeller replacement annually or every 100-200 hours of operation, whichever comes first. Impeller blades can become worn, cracked, or damaged from debris, dry running, or normal wear, leading to reduced water flow, overheating, and potentially catastrophic engine damage if not addressed promptly.\u003c\/p\u003e\n\u003cp\u003eDesigned for 25 HP engines from 1998-2018, this kit ensures proper fit and function for your specific engine model. The quality construction provides reliable performance and durability, giving you confidence that your engine's cooling system will function properly season after season. Regular impeller service is essential preventive maintenance that protects your investment and prevents costly repairs from overheating damage.\u003c\/p\u003e\n\u003cp\u003eWhether you're performing routine annual maintenance or replacing a failed impeller, this Sierra kit provides all the components needed for a professional-quality water pump service on your outboard.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOutboard engines: 25 HP\u003c\/li\u003e\n\u003cli\u003eModel years: 1998-2018\u003c\/li\u003e\n\u003cli\u003eComplete kit with impeller and hardware\u003c\/li\u003e\n\u003cli\u003eMeets or exceeds OEM specifications\u003c\/li\u003e\n\u003cli\u003eHigh-quality rubber construction\u003c\/li\u003e\n\u003cli\u003eEssential for cooling system maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eInterchange\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cp\u003eYamaha Outboard    61N-W0078-10-00\u003cbr\u003eYamaha Outboard    61N-W0078-11-00\u003cbr\u003eYamaha Outboard    61N-W0078-13-00\u003cbr\u003eYamaha Outboard    61N-W0078-14-00\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eNormalized SKU:\u003c\/b\u003e 184562\u003cbr\u003e\u003cb\u003eUPC Code:\u003c\/b\u003e 808282391683\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":53087002951985,"sku":"SIE-18-4562","price":38.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0015\/7184\/8291\/files\/sierra-impeller-kit-25-hp-98-18-18-4562-808282391683-1226583496.jpg?v=1773065827","url":"https:\/\/www.firstchoicemarine.com\/products\/sierra-impeller-kit-25-hp-98-18-18-4562","provider":"First Choice Marine","version":"1.0","type":"link"}