{"product_id":"sierra-18-0564-oil-seal-for-mercury-outboard-powerhead-replaces-mercury-26-888483-1-250-id-x-1-690-od-x-0-256","title":"Sierra 18-0564 Oil Seal, White, Replaces Mercury Marine 26-888483","description":"\u003cp\u003eThe Sierra 18-0564 Oil Seal is a machined, white-finish seal designed for outboard powerhead applications where a reliable, leak-resistant seal is needed around a rotating shaft. Its compact size, measuring 0.39 x 0.39 x 0.39 inches, makes it suited for tight clearances found in outboard powerhead assemblies. The seal is built with a machined exterior for a consistent, precise fit, helping maintain proper sealing pressure and reduce the risk of oil or lubricant leakage during operation.\u003c\/p\u003e\u003cp\u003eThis oil seal is a universal-fit component, meaning it is not restricted to a single engine family, and it directly replaces Mercury Marine part number 26-888483, making it a straightforward swap for boat owners and technicians performing powerhead seal maintenance. At just 0.01 pounds, it is a lightweight, small-parts item that is easy to keep on hand for routine service work or as a spare when servicing Mercury outboard powerheads.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-0564\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Oil Seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit Type:\u003c\/strong\u003e Universal Fit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.01 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282200275\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e Mercury Marine 26-888483\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eThis oil seal is a universal-fit part and is not limited to a specific engine model or year range.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury Marine 26-888483\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-0564 oil seal used for?\u003c\/strong\u003e The Sierra 18-0564 is an oil seal designed to prevent lubricant leakage around a rotating shaft in an outboard powerhead, helping maintain proper internal sealing during engine operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-0564 oil seal replace an OEM Mercury part?\u003c\/strong\u003e Yes, the Sierra 18-0564 oil seal directly replaces Mercury Marine part number 26-888483.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-0564 oil seal?\u003c\/strong\u003e This oil seal is white in color.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow big is the Sierra 18-0564 oil seal?\u003c\/strong\u003e The Sierra 18-0564 measures 0.39 x 0.39 x 0.39 inches, a compact size intended for tight powerhead clearances.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-0564 oil seal weigh?\u003c\/strong\u003e It weighs 0.01 pounds, making it a lightweight small-parts item.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-0564 a universal-fit part?\u003c\/strong\u003e Yes, the 18-0564 oil seal is listed as a universal fit rather than being restricted to one specific engine model.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat finish does the Sierra 18-0564 oil seal have?\u003c\/strong\u003e The seal has a machined exterior finish, which supports a precise, consistent fit for sealing performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-0564 an aftermarket or genuine Mercury part?\u003c\/strong\u003e The 18-0564 is a Sierra-branded aftermarket oil seal that cross-references to and replaces Mercury Marine 26-888483.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat UPC is associated with the Sierra 18-0564 oil seal?\u003c\/strong\u003e The UPC for the Sierra 18-0564 oil seal is 808282200275.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the Sierra 18-0564 as a spare part for powerhead maintenance?\u003c\/strong\u003e Yes, due to its small size and low weight of 0.01 pounds, the 18-0564 oil seal is practical to keep on hand as a spare for outboard powerhead servicing.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988078801115,"sku":"SIE-18-0564","price":19.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-0564__83910.1737874349.500.750.jpg?v=1785189034","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-0564-oil-seal-for-mercury-outboard-powerhead-replaces-mercury-26-888483-1-250-id-x-1-690-od-x-0-256","provider":"Good Vibes Marina","version":"1.0","type":"link"}