{"product_id":"sierra-18-2059-lower-oil-seal-replaces-omc-317624-for-evinrude-johnson-outboard-prop-shaft-driveshaft","title":"Sierra Oil Seal 18-2059, Replaces OMC 321466, for Evinrude Outboard Prop and Driveshaft","description":"\u003cp\u003eThe Sierra 18-2059 Oil Seal is a precision-machined replacement seal built for Evinrude outboard prop and driveshaft applications. It is a direct cross-reference for OMC part number 321466, giving boat owners a reliable way to replace a worn or leaking factory seal without hunting down an original OMC part. The seal's small, compact profile (0.39 x 0.39 x 0.39 inches) is typical of the precision-fit seals used around driveshaft and propeller shaft housings, where even a minor leak can lead to water intrusion or lubricant loss. At just 0.05 pounds, it is a lightweight component designed to be installed as part of routine lower-unit or driveshaft seal maintenance.\u003c\/p\u003e\u003cp\u003eSierra manufactures this seal with a machined exterior finish to help ensure a consistent, snug fit against the housing bore it seats in, which is important for maintaining a proper seal under the pressure and vibration of outboard operation. The part is cataloged under Sierra's Evinrude Outboard Prop \u0026amp; Driveshaft Seals line, making it a straightforward choice for owners servicing this specific area of an Evinrude outboard. Because it is sold as an individual seal rather than a full kit, it allows for targeted replacement of just the failed component.\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 18-2059\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999310101\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Evinrude Outboard Prop \u0026amp; Driveshaft Seals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 321466\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\u003eWeight:\u003c\/strong\u003e 0.05 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Taiwan\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for Evinrude outboard prop and driveshaft seal applications.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e321466\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2059 oil seal replace?\u003c\/strong\u003e The Sierra 18-2059 is a direct cross-reference for OMC part number 321466, so it can be used wherever that original seal is called for.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this seal made by Sierra or a third party?\u003c\/strong\u003e Yes, the 18-2059 is manufactured under the Sierra brand as a replacement oil seal, not a generic unbranded part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-2059 oil seal?\u003c\/strong\u003e It measures 0.39 x 0.39 x 0.39 inches, a small, compact seal sized for driveshaft and propeller shaft housings.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-2059 oil seal weigh?\u003c\/strong\u003e This seal weighs 0.05 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat type of outboard is the 18-2059 seal used on?\u003c\/strong\u003e The Sierra 18-2059 is cataloged for Evinrude outboard prop and driveshaft seal applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the exterior finish of this seal?\u003c\/strong\u003e The 18-2059 has a machined exterior finish, which helps it seat snugly in its housing bore.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is the Sierra 18-2059 oil seal manufactured?\u003c\/strong\u003e The country of origin listed for the 18-2059 oil seal is Taiwan.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-2059 seal fit if my parts diagram calls out OMC 321466?\u003c\/strong\u003e Yes, since Sierra 18-2059 is cross-referenced to OMC 321466, it is intended as the equivalent replacement for that OEM number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2059 come as a single seal or a kit?\u003c\/strong\u003e The 18-2059 is sold as an individual oil seal, allowing targeted replacement of just this component rather than a full seal kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2059 oil seal?\u003c\/strong\u003e The UPC for this Sierra oil seal is 030999310101.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988091482331,"sku":"SIE-18-2059","price":11.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2059_lg__80119.1558122366.500.750.jpg?v=1785188205","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-2059-lower-oil-seal-replaces-omc-317624-for-evinrude-johnson-outboard-prop-shaft-driveshaft","provider":"Good Vibes Marina","version":"1.0","type":"link"}