{"product_id":"oil-seal-for-evinrude-outboard-replaces-omc-313284-18-2005","title":"Sierra Oil Seal 18-2005, Replaces 313284, for Evinrude Outboard Prop and Driveshaft","description":"\u003cp\u003eThe Sierra Oil Seal 18-2005 is a direct-replacement oil seal designed for Evinrude outboard prop and driveshaft applications. It is built to restore a proper seal at the prop shaft or driveshaft housing, helping keep gear lubricant contained and water out of the lower unit. As a direct replacement for OEM part number 313284, this seal is intended for boat owners and marine technicians performing lower unit service, gearcase rebuilds, or prop shaft seal replacement on compatible Evinrude outboards.\u003c\/p\u003e\u003cp\u003eThis is a compact, lightweight component at just 0.03 pounds, sized to fit precisely in place of the original equipment seal it replaces. Using the correct Sierra part number ensures the seal matches the dimensions and sealing characteristics required for a proper gearcase seal, which is critical to preventing water intrusion and gear oil leakage that can lead to costly lower unit damage.\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 18-2005\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComponent Type:\u003c\/strong\u003e Oil Seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.03 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282257668\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eEvinrude outboard prop and driveshaft applications\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e313284\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2005 oil seal replace?\u003c\/strong\u003e It is a direct replacement for OEM part number 313284.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat outboards is the 18-2005 oil seal designed for?\u003c\/strong\u003e This seal is designed for Evinrude outboard prop and driveshaft applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does this oil seal weigh?\u003c\/strong\u003e The Sierra 18-2005 oil seal weighs 0.03 pounds, a small, lightweight sealing component.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2005 the same as OEM part 313284?\u003c\/strong\u003e Yes, Sierra 18-2005 is manufactured as a direct equivalent to OEM number 313284 for the same application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is this seal typically installed?\u003c\/strong\u003e It seals at the prop shaft or driveshaft area of the outboard lower unit, part of the Evinrude prop and driveshaft seal group.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use part number 313284 to cross-reference this product?\u003c\/strong\u003e Yes, 313284 is the OEM number that Sierra part 18-2005 replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this an OEM or aftermarket part?\u003c\/strong\u003e The 18-2005 is a Sierra-branded aftermarket seal manufactured to replace the OEM 313284 part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy does the driveshaft or prop shaft seal need to be replaced?\u003c\/strong\u003e A worn or failed seal like the one replaced by Sierra 18-2005 can allow water into the gearcase or let gear oil leak out, so replacing it during lower unit service protects the outboard.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when ordering the 18-2005 seal?\u003c\/strong\u003e Ordering the Sierra 18-2005 gets you the single oil seal component listed under that part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this seal fit other outboard brands besides Evinrude?\u003c\/strong\u003e The Sierra 18-2005 oil seal is designated for Evinrude outboard prop and driveshaft applications.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988090204379,"sku":"SIE-18-2005","price":11.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-2005__90715.1722361282.500.750.jpg?v=1785329174","url":"https:\/\/www.goodvibesmarina.com\/products\/oil-seal-for-evinrude-outboard-replaces-omc-313284-18-2005","provider":"Good Vibes Marina","version":"1.0","type":"link"}