{"product_id":"sierra-18-2671-lower-unit-seal-kit-replaces-omc-985612-fits-all-4-cyl-cobra-sterndrive-1986-1989","title":"Sierra Lower Unit Seal Kit 18-2671, Replaces OMC 985612, All 4 Cyl. Cobra (1986-89)","description":"\u003cp\u003eThe Sierra 18-2671 Lower Unit Seal Kit is a replacement seal kit engineered for the lower unit of All 4 cyl. Cobra (1986-89) sterndrives. This kit is built to meet or exceed the specifications of the original equipment seals it replaces, giving you a reliable way to restore the watertight and lubricant-tight integrity of the lower unit during a rebuild or seal replacement service. Lower unit seals are a wear item that harden and lose sealing ability over time, allowing gear lube to leak out or water to intrude into the gear case, so replacing them as a set during routine maintenance or after any lower unit service helps prevent gear case damage from lubricant loss or water contamination.\u003c\/p\u003e\u003cp\u003eSierra supplies parts to many OEM engine manufacturers and boat builders, and this kit is manufactured to be a direct fit for the specified application, cross-referencing to OEM part number 985612. It ships as a complete kit so you have the seals needed for the job in one part number, simplifying ordering versus sourcing individual seals separately.\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 18-2671\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Lower Unit Seal Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e OMC Bellows and Transom Seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e All 4 cyl. Cobra (1986-89)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.19 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 030999312822\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN:\u003c\/strong\u003e 00030999312822\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eAll 4 cyl. Cobra (1986-89)\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e985612\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2671 Lower Unit Seal Kit fit?\u003c\/strong\u003e The 18-2671 kit is designed for All 4 cyl. Cobra (1986-89) sterndrive lower units.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2671 kit an OEM equivalent?\u003c\/strong\u003e Yes, Sierra part 18-2671 cross-references to OEM number 985612 and is manufactured to meet or exceed the original part's performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does 18-2671 replace?\u003c\/strong\u003e It replaces OEM part number 985612.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2671 Lower Unit Seal Kit weigh?\u003c\/strong\u003e This kit weighs 0.19 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should the lower unit seals be replaced?\u003c\/strong\u003e Lower unit seals like those in the 18-2671 kit should be replaced whenever the lower unit is serviced or rebuilt, or if gear lube leakage or water intrusion into the gear case is found.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat happens if worn lower unit seals are not replaced?\u003c\/strong\u003e Worn seals can allow gear lubricant to leak out or water to enter the lower unit gear case, which can lead to gear case corrosion or component damage if not addressed with a kit such as the 18-2671.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this kit include all the seals needed for a lower unit rebuild?\u003c\/strong\u003e The 18-2671 is sold as a complete seal kit for the specified lower unit application, so the seals needed for that service are included in one part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the 18-2671 seal kit?\u003c\/strong\u003e The seals in this kit are white in color.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-2671 a genuine aftermarket replacement or a used part?\u003c\/strong\u003e The 18-2671 is a new aftermarket seal kit manufactured by Sierra, not a used or reconditioned part, and is built to meet or exceed OEM specifications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the shape of the seals in the 18-2671 kit?\u003c\/strong\u003e The seals included in the 18-2671 kit are round in shape.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2671 covered under warranty?\u003c\/strong\u003e Yes, the 18-2671 Lower Unit Seal Kit is covered under Sierra's standard limited warranty.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988108619995,"sku":"SIE-18-2671","price":39.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2671_lg__52413.1558122654.500.750.jpg?v=1785188279","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-2671-lower-unit-seal-kit-replaces-omc-985612-fits-all-4-cyl-cobra-sterndrive-1986-1989","provider":"Good Vibes Marina","version":"1.0","type":"link"}