{"product_id":"sierra-18-2683-lower-unit-seal-kit-for-omc-king-cobra-sterndrive-1990-replaces-omc-313282-309044-303339","title":"Sierra 18-2683 Lower Unit Seal Kit for OMC King Cobra Lower Unit (1990)","description":"\u003cp\u003eThe Sierra 18-2683 Lower Unit Seal Kit is a complete gear housing seal kit for the OMC King Cobra Lower Unit (1990). It bundles the oil seal, bearing housing gasket, and spaghetti seal needed to properly reseal the lower unit gear housing during a rebuild or service, restoring the water-tight and oil-tight barriers that keep gear lube contained and water out of the gearcase. Each component in the kit carries its own Sierra part number and matches the original equipment (O.E.) reference number, so the kit is a direct fit for the components it is designed to service. The oil seal (Sierra 18-2023, O.E. 313282) is supplied in the quantity of two required by the application, and the bearing housing gasket (Sierra 18-2891, O.E. 303339) is supplied as a single gasket. The spaghetti seal (O.E. 309044) rounds out the kit as the third sealing component, supplied in a quantity of one. Sierra manufactures its parts to meet or exceed the original equipment part being replaced, and supplies OEM engine manufacturers and boat builders with parts on a daily basis. This kit is intended for the OMC King Cobra Lower Unit (1990) and is sold as a complete set rather than as individual seals, making it a convenient single purchase for a lower unit reseal job.\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 18-2683\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Lower Unit Seal Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.1 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999562821\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e OMC King Cobra Lower Unit (1990)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes - Oil Seal:\u003c\/strong\u003e Sierra 18-2023, O.E. 313282, Qty 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes - Bearing Housing Gasket:\u003c\/strong\u003e Sierra 18-2891, O.E. 303339, Qty 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes - Spaghetti Seal:\u003c\/strong\u003e O.E. 309044, Qty 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eOMC King Cobra Lower Unit (1990).\u003c\/p\u003e\u003ch3\u003eKit Contents (OEM Cross-Reference)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOil Seal - Sierra 18-2023 - O.E. 313282 - Qty 2\u003c\/li\u003e\n\u003cli\u003eBearing Housing Gasket - Sierra 18-2891 - O.E. 303339 - Qty 1\u003c\/li\u003e\n\u003cli\u003eSpaghetti Seal - O.E. 309044 - Qty 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2683 Lower Unit Seal Kit fit?\u003c\/strong\u003e The Sierra 18-2683 Lower Unit Seal Kit is designed for the OMC King Cobra Lower Unit (1990).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the 18-2683 kit?\u003c\/strong\u003e The kit contains an oil seal (Sierra 18-2023, O.E. 313282, quantity 2), a bearing housing gasket (Sierra 18-2891, O.E. 303339, quantity 1), and a spaghetti seal (O.E. 309044, quantity 1).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many oil seals come in the 18-2683 kit?\u003c\/strong\u003e Two oil seals are included, Sierra part number 18-2023 with O.E. Reference 313282.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the bearing housing gasket in this kit the same as O.E. 303339?\u003c\/strong\u003e Yes, the bearing housing gasket in the Sierra 18-2683 kit is Sierra 18-2891, which corresponds to O.E. Number 303339.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2683 seal kit weigh?\u003c\/strong\u003e The Sierra 18-2683 Lower Unit Seal Kit weighs 0.1 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-2683 kit packaging or seal material?\u003c\/strong\u003e The listed color for the Sierra 18-2683 Lower Unit Seal Kit is white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this kit include gear lube or other lower unit fluids?\u003c\/strong\u003e No, the 18-2683 kit contains only the sealing components (oil seal, bearing housing gasket, and spaghetti seal) needed to reseal the lower unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre Sierra parts equivalent to OEM in quality?\u003c\/strong\u003e Sierra manufactures the 18-2683 kit and its components to meet or exceed the original equipment part being replaced, and Sierra supplies parts to OEM engine manufacturers and boat builders.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the spaghetti seal used for in this kit?\u003c\/strong\u003e The spaghetti seal (O.E. 309044) included in the Sierra 18-2683 kit is one of the three sealing components used during a lower unit reseal, supplied in a quantity of one.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2683 sold as individual seals or a complete kit?\u003c\/strong\u003e The Sierra 18-2683 is sold as a complete lower unit seal kit containing the oil seal, bearing housing gasket, and spaghetti seal together rather than as separate parts.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988108849371,"sku":"SIE-18-2683","price":35.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2683_lg__87270.1686315374.500.750.jpg?v=1785188390","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-2683-lower-unit-seal-kit-for-omc-king-cobra-sterndrive-1990-replaces-omc-313282-309044-303339","provider":"Good Vibes Marina","version":"1.0","type":"link"}