{"title":"Lower\/Upper Unit Seal Kits","description":null,"products":[{"product_id":"sierra-18-0021-gear-housing-seal-kit-replaces-yamaha-688-w0001-22-00-fits-c75-c80-c85-c90-90-hp-outboards","title":"Sierra Gear Housing Seal Kit 18-0021, Replaces Yamaha 688-W0001-22-00, Fits C75\/E75\/P75\/C80\/C85\/90\/B90\/C90 Outboards","description":"\u003cp\u003eThe Sierra 18-0021 Gear Housing Seal Kit is a replacement seal set engineered for the lower gear housing of specific Yamaha outboard motors. It replaces the OEM Yamaha part 688-W0001-22-00 and is built to match the fit, form, and function of the original equipment seals it succeeds, making it a direct drop-in choice for a gear housing rebuild or seal replacement job.\u003c\/p\u003e\u003cp\u003eThis kit fits the Yamaha C75 (1994-99), E75 (1995-00), P75 (1996-99), C80 (1997), C85 (1992-96), 90 (1992-02), B90 (1998-99), and C90 (1997-01) outboard models. Because gear housing seals are a wear item exposed to constant water contact and gear lubricant, replacing them at the correct interval, or any time the lower unit is opened up, helps prevent water intrusion into the gear case and lubricant leakage that can lead to bearing and gear damage. The kit is sold under the Sierra brand, a long-established supplier of outboard replacement parts, and is packaged as a complete set so the seals needed for the job are included together rather than sourced individually.\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 18-0021\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Gear Housing Seal Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces (OEM):\u003c\/strong\u003e 688-W0001-22-00\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Yamaha C75 (1994-99), E75 (1995-00), P75 (1996-99), C80 (1997), C85 (1992-96), 90 (1992-02), B90 (1998-99), C90 (1997-01)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.36 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282161132\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eYamaha C75 (1994-99)\u003c\/li\u003e\n\u003cli\u003eYamaha E75 (1995-00)\u003c\/li\u003e\n\u003cli\u003eYamaha P75 (1996-99)\u003c\/li\u003e\n\u003cli\u003eYamaha C80 (1997)\u003c\/li\u003e\n\u003cli\u003eYamaha C85 (1992-96)\u003c\/li\u003e\n\u003cli\u003eYamaha 90 (1992-02)\u003c\/li\u003e\n\u003cli\u003eYamaha B90 (1998-99)\u003c\/li\u003e\n\u003cli\u003eYamaha C90 (1997-01)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e688-W0001-22-00\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-0021 Gear Housing Seal Kit fit?\u003c\/strong\u003e The 18-0021 kit fits the Yamaha C75 (1994-99), E75 (1995-00), P75 (1996-99), C80 (1997), C85 (1992-96), 90 (1992-02), B90 (1998-99), and C90 (1997-01) outboard models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does this seal kit replace?\u003c\/strong\u003e It replaces Yamaha OEM part number 688-W0001-22-00, so it is a direct substitute for that original gear housing seal set.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-0021 an OEM part or an aftermarket replacement?\u003c\/strong\u003e It is an aftermarket replacement kit made to match the fit, form, and function of the original Yamaha 688-W0001-22-00 gear housing seal set.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-0021 kit weigh?\u003c\/strong\u003e The Sierra 18-0021 Gear Housing Seal Kit weighs 0.36 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this kit work on a Yamaha 90 outboard?\u003c\/strong\u003e Yes, the 18-0021 kit is designed to fit the Yamaha 90 (1992-02) outboard, along with the C75, E75, P75, C80, C85, B90, and C90 models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the 18-0021 kit?\u003c\/strong\u003e The kit includes the gear housing seals needed to service the lower unit of the covered Yamaha outboard models, sold as a Sierra Gear Housing Seal Kit under part number 18-0021.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should the gear housing seals be replaced?\u003c\/strong\u003e Gear housing seals like those in the 18-0021 kit should be replaced any time the lower unit is opened for service, or when water intrusion or gear lubricant leakage is suspected.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Yamaha C90 use the same seal kit as the C85?\u003c\/strong\u003e Yes, the Sierra 18-0021 Gear Housing Seal Kit covers both the C85 (1992-96) and the C90 (1997-01), along with several other Yamaha models listed in its fitment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the UPC for the 18-0021 kit 808282161132?\u003c\/strong\u003e Yes, the Sierra Gear Housing Seal Kit 18-0021 carries UPC 808282161132.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan this kit be used on a Yamaha E75 outboard?\u003c\/strong\u003e Yes, the E75 (1995-00) is one of the Yamaha models covered by the Sierra 18-0021 Gear Housing Seal Kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat brand makes part number 18-0021?\u003c\/strong\u003e Part number 18-0021 is manufactured by Sierra as a Gear Housing Seal Kit.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988012151003,"sku":"SIE-18-0021","price":54.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-0021_lg__44598.1558119184.500.750.jpg?v=1785188101"},{"product_id":"mercruiser-lower-gear-housing-bearing-repair-kit-mpn-118-1404","title":"Sierra Bearing Repair Kit 18-1404 for Mercruiser Lower Gear Housing","description":"\u003cp\u003eThe Sierra 18-1404 is a bearing repair kit built for the lower gear housing on Mercruiser sterndrive units. It is designed to restore proper bearing function in the lower unit, giving boat owners and marine technicians a straightforward way to address wear in the gear housing without having to source individual bearing components separately. This kit falls under Sierra's Mercruiser lower gear housing bearing category, making it a targeted replacement solution for this specific service point on the outdrive.\u003c\/p\u003e\u003cp\u003eAt 3.94 pounds, this is a substantial kit intended for a full lower unit bearing service. Ordering by the Sierra part number 18-1404 ensures you get the correct kit for this application rather than a generic or mismatched bearing set.\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 18-1404\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Bearing Repair Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Mercruiser Lower Gear Housing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 3.94 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282383831\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-1404 kit used for?\u003c\/strong\u003e It is a bearing repair kit for the lower gear housing on Mercruiser sterndrive units, used to service the bearings in that section of the lower unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-1404 bearing repair kit weigh?\u003c\/strong\u003e The Sierra 18-1404 weighs 3.94 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-1404 kit specific to Mercruiser lower units?\u003c\/strong\u003e Yes, this Sierra kit is categorized specifically for Mercruiser lower gear housing bearing service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat part number should I reference when ordering this kit?\u003c\/strong\u003e Order using Sierra part number 18-1404 to ensure you receive the correct lower gear housing bearing repair kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-1404 a Sierra brand product?\u003c\/strong\u003e Yes, the 18-1404 bearing repair kit is manufactured under the Sierra brand.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-1404 kit?\u003c\/strong\u003e The UPC for this Sierra bearing repair kit is 808282383831.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-1404 kit cover the full lower gear housing or a single bearing?\u003c\/strong\u003e It is sold as a kit, indicating it is intended for a lower gear housing bearing service rather than a single standalone bearing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere on the boat does the 18-1404 kit get installed?\u003c\/strong\u003e This kit services the lower gear housing, which is part of the lower unit on a Mercruiser sterndrive.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988087779547,"sku":"SIE-18-1404","price":152.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-1404__42970.1722501545.500.750.jpg?v=1785329151"},{"product_id":"sierra-18-2003-oil-seal-replaces-mercury-26-64893-mercruiser-upper-gear-housing-sterndrive-seal-kit-component","title":"Sierra 18-2003 Oil Seal for MerCruiser Alpha One Upper Gear Housing, Replaces Mercury Marine 26-68493 26-823894","description":"\u003cp\u003eThe Sierra 18-2003 is an upper gear housing oil seal built for MerCruiser stern drive applications, including the Alpha One, Alpha One SS, and Alpha One Gen II family of drives. It is designed to keep gear lube contained within the upper drive housing while sealing out water intrusion, protecting the gear set and bearings from contamination and premature wear. The seal is white in color with a rectangular profile and is a lightweight, single-piece component intended for straightforward replacement during upper gear housing service or seal kit rebuilds.\u003c\/p\u003e\u003cp\u003eThis seal cross-references directly to Mercury Marine OEM part numbers 26-68493 and 26-823894, making it a drop-in equivalent for owners who prefer an aftermarket-priced option without deviating from OEM fit and function. Fitment spans a wide range of MerCruiser drive applications and model years, from early 888\/228\/250\/260 units through Alpha One Gen II (CR) drives. Because a gear housing seal is a wear item exposed to constant lubricant and water contact, replacing it whenever the upper housing is opened for service helps prevent leaks and gear lube contamination.\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 18-2003\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 Rectangular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.06 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Taiwan\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 1 seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e Mercury Marine 26-68493, 26-823894\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMerCruiser 888 \/ 228 \/ 250 \/ 260, 1977-1982\u003c\/li\u003e\n\u003cli\u003eMerCruiser R, 1983 \u0026amp; up\u003c\/li\u003e\n\u003cli\u003eMerCruiser MR Alpha One, 1984-1990\u003c\/li\u003e\n\u003cli\u003eMerCruiser MR Alpha One (CR), 1984-1990\u003c\/li\u003e\n\u003cli\u003eMerCruiser Alpha One SS, 1986-1989\u003c\/li\u003e\n\u003cli\u003eMerCruiser Alpha One Gen II, 1991-1995\u003c\/li\u003e\n\u003cli\u003eMerCruiser Alpha One Gen II (CR), 1991-1995\u003c\/li\u003e\n\u003cli\u003eMerCruiser Alpha One Gen II, 1996-1997\u003c\/li\u003e\n\u003cli\u003eMerCruiser Alpha One Gen II (CR), 1996-2010\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury Marine 26-68493\u003c\/li\u003e\n\u003cli\u003eMercury Marine 26-823894\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat MerCruiser drives does the Sierra 18-2003 oil seal fit?\u003c\/strong\u003e The Sierra 18-2003 fits MerCruiser 888\/228\/250\/260 drives (1977-1982), MerCruiser R (1983 \u0026amp; up), MR Alpha One and MR Alpha One (CR) drives (1984-1990), Alpha One SS drives (1986-1989), and Alpha One Gen II and Alpha One Gen II (CR) drives (1991-1995, 1996-1997, and 1996-2010).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2003 the same as a Mercury Marine seal?\u003c\/strong\u003e Yes, the Sierra 18-2003 cross-references directly to Mercury Marine OEM oil seals 26-68493 and 26-823894, so it fits and functions the same as the genuine Mercury Marine part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color and shape is the 18-2003 seal?\u003c\/strong\u003e It is a white, rectangular-shaped seal designed for the upper gear housing of the specified MerCruiser drives.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-2003 oil seal weigh?\u003c\/strong\u003e This oil seal weighs 0.06 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is the Sierra 18-2003 oil seal manufactured?\u003c\/strong\u003e The Sierra 18-2003 upper gear housing oil seal is manufactured in Taiwan.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2003 a genuine Mercury Marine part or an aftermarket replacement?\u003c\/strong\u003e It is an aftermarket Sierra-brand oil seal, not a genuine Mercury Marine part, but it cross-references to Mercury Marine 26-68493 and 26-823894 for equivalent fit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2003 seal fit the Alpha One Gen II (CR) drive?\u003c\/strong\u003e Yes, the 18-2003 fits Alpha One Gen II (CR) drives for the 1991-1995 and 1996-2010 model years.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many seals come in a package?\u003c\/strong\u003e The Sierra 18-2003 is packaged as a single oil seal per unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2003 fit the early MerCruiser 888\/228\/250\/260 drives?\u003c\/strong\u003e Yes, this seal fits MerCruiser 888\/228\/250\/260 drives from the 1977-1982 model years.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the OEM cross-reference number for the Sierra 18-2003?\u003c\/strong\u003e The Sierra 18-2003 cross-references to Mercury Marine 26-68493 and 26-823894.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-2003 fit an Alpha One SS drive?\u003c\/strong\u003e Yes, the Sierra 18-2003 is listed for MerCruiser Alpha One SS drives from the 1986-1989 model years.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the 18-2003 seal used for?\u003c\/strong\u003e The 18-2003 is an upper gear housing oil seal used to retain gear lubricant and keep water out of the upper drive housing on the listed MerCruiser applications.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988090269915,"sku":"SIE-18-2003","price":21.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2003_lg__62920.1558121909.500.750.jpg?v=1785188676"},{"product_id":"sierra-18-2011-marine-oil-seal-replaces-mercury-26-90562-mercruiser-lower-gear-housing-water-pump-base-seal","title":"Sierra 18-2011 Oil Seal for MerCruiser 60\/80\/90 Gear Housing (1965-1972), Replaces Mercury Marine 26-90562","description":"\u003cp\u003eThe Sierra 18-2011 is a lower gear housing oil seal built for MerCruiser 60\/80\/90 model stern drives produced from 1965 to 1972. It is a precision-machined replacement seal used during gear housing service, sealing the housing against water intrusion and lubricant loss at the shaft. The seal cross-references directly to Mercury Marine part number 26-90562, making it a straightforward drop-in replacement for boaters and marine technicians rebuilding or servicing the lower unit on this model line.\u003c\/p\u003e\u003cp\u003eThe 18-2011 measures 1.250 inches in outer diameter, has a shaft size of 0.750 inches, and a width of 0.312 inches, with a machined exterior finish. It is a compact, lightweight component at 0.02 pounds, sized to fit within the gear housing seal carrier alongside the other components (such as the O-ring and bearing carrier) used in MerCruiser 60\/80\/90 gear housing seal service.\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 18-2011\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e MerCruiser Lower Gear Housing Seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter Diameter:\u003c\/strong\u003e 1.250 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Size:\u003c\/strong\u003e 0.750 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 0.312 inches\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 0.02 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999309570\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMerCruiser 60 \/ 80 \/ 90 model gear housings, 1965-1972\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury Marine 26-90562\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2011 oil seal fit?\u003c\/strong\u003e The 18-2011 is designed for MerCruiser 60\/80\/90 model lower gear housings built from 1965 to 1972.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2011 the same as Mercury Marine 26-90562?\u003c\/strong\u003e Yes, the 18-2011 cross-references directly to Mercury Marine part number 26-90562.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of this seal?\u003c\/strong\u003e The 18-2011 measures 1.250 inches in outer diameter, 0.750 inch shaft size, and 0.312 inch width.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2011 oil seal weigh?\u003c\/strong\u003e 0.02 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the exterior finish on this seal?\u003c\/strong\u003e The Sierra 18-2011 has a machined exterior finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Mercury OEM part or an aftermarket replacement?\u003c\/strong\u003e The 18-2011 is manufactured by Sierra as an aftermarket seal engineered to the Mercury Marine 26-90562 specification, rather than a Mercury-branded part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2011?\u003c\/strong\u003e 030999309570.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere does this seal fit within the gear housing?\u003c\/strong\u003e In the MerCruiser 60\/80\/90 gear housing seal chart, the 18-2011 is listed as the Seal component alongside the O-ring and bearing carrier used for that model and year range.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2011 fit later MerCruiser models like the Alpha One?\u003c\/strong\u003e No, the 18-2011 is listed specifically for the 60\/80\/90 model gear housings covering 1965-1972; later MerCruiser drive lines use different Sierra seal part numbers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size shaft does the 18-2011 seal accept?\u003c\/strong\u003e A 0.750 inch shaft, per the seal's listed shaft size.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included with this part?\u003c\/strong\u003e The 18-2011 is sold as a single oil seal, not a full gear housing seal kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the 18-2011 be cross-referenced by its Mercury Marine number?\u003c\/strong\u003e Yes, searching Mercury Marine 26-90562 will return the Sierra 18-2011 as its cross-referenced equivalent.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988090302683,"sku":"SIE-18-2011","price":12.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-2011__04532.1722501864.500.750.jpg?v=1785189002"},{"product_id":"sierra-18-2094-marine-oil-seal-replaces-mercruiser-26-88416-26-36143-fits-alpha-one-bravo-i-ii-iii-and-r-mr-470-sterndrives","title":"Sierra 18-2094 Oil Seal, Replaces 30-60794A2, Fits Mercruiser 1, R, MR and Alpha Stern Drives 1974-97","description":"\u003cp\u003eThe Sierra 18-2094 is a greasable oil seal engineered for Mercruiser stern drive units, sold to meet or exceed original equipment quality. It is designed as a direct replacement for the factory seal on Mercruiser 1, R, MR, and Alpha model stern drives built through the 1974-97 range, restoring the seal that keeps water out and lubricating grease in around the drive shaft. Each unit is greasable, allowing fresh grease to be worked into the seal during service to extend its working life and protect against water intrusion at the gimbal\/drive shaft interface.\u003c\/p\u003e\u003cp\u003eThis part is packaged so that one 18-2094 seal and one 18-2100 seal are included together, since Mercruiser stern drive service on these units typically calls for replacing both seals as a set. The white-finished seal cross-references directly to Mercury Marine part numbers 30-60794A2, 30-60794A4, and 30-879194A02, so it drops into the same location as those OEM numbers without modification. It is a straightforward maintenance item for anyone performing gimbal bearing, drive shaft, or U-joint service on a compatible Mercruiser stern drive, and is commonly replaced any time the drive is disassembled for other repair work to ensure a fresh, reliable seal is in place.\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 18-2094\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercruiser Internal Engine Parts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e Greasable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e Contains one each of 18-2094 and 18-2100\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Mercruiser 1, R, MR and Alpha stern drives (1974-97)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 30-60794A2, 30-60794A4, 30-879194A02\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.11 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282185206\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercruiser 1, R, MR and Alpha stern drives (1974-97)\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e30-60794A2\u003c\/li\u003e\n\u003cli\u003e30-60794A4\u003c\/li\u003e\n\u003cli\u003e30-879194A02\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2094 oil seal fit?\u003c\/strong\u003e The Sierra 18-2094 is designed for Mercruiser 1, R, MR and Alpha model stern drives (1974-97), sealing the drive shaft area to keep water out and grease in.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-2094 replace?\u003c\/strong\u003e It cross-references directly to Mercury Marine numbers 30-60794A2, 30-60794A4, and 30-879194A02, so it installs in place of any of those factory numbers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2094 come with anything else in the package?\u003c\/strong\u003e Yes, this package contains one each of the 18-2094 and 18-2100 seals, since these two are typically replaced together during stern drive service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2094 seal greasable?\u003c\/strong\u003e Yes, the 18-2094 is a greasable design, meaning fresh grease can be worked into the seal to help maintain its seal against water intrusion over time.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2094 oil seal weigh?\u003c\/strong\u003e The Sierra 18-2094 weighs 0.11 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-2094 seal?\u003c\/strong\u003e The 18-2094 has a white finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2094 a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e It is a Sierra-manufactured replacement part built to meet or exceed original equipment quality, cross-referenced to Mercury Marine OEM numbers 30-60794A2, 30-60794A4, and 30-879194A02 rather than being sold under the Mercury Marine brand itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen would I need to replace the 18-2094 seal?\u003c\/strong\u003e This seal is typically replaced whenever a compatible Mercruiser 1, R, MR or Alpha stern drive is disassembled for gimbal, drive shaft, or U-joint service, or when the existing seal shows wear that could let water in.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need special tools to install the 18-2094?\u003c\/strong\u003e Installation follows standard Mercruiser stern drive disassembly and reseal procedures for the 1, R, MR and Alpha model drives that the 18-2094 is designed for.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2094 seal sold as a single seal or a pair?\u003c\/strong\u003e The 18-2094 package contains one each of the 18-2094 and 18-2100 seals, so both are included together rather than sold as two separate 18-2094 units.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2094?\u003c\/strong\u003e The Sierra 18-2094 oil seal has UPC 808282185206.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988091646171,"sku":"SIE-18-2094","price":21.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/Untitled-1__32850.1753840675.500.750.jpg?v=1785188938"},{"product_id":"sierra-18-21005k-seal-gimbal-bearing-kit-for-mercruiser-bravo-alpha-one-gen-ii-1998-up-replaces-30-862540a3","title":"Sierra 18-21005K Seal \u0026 Bearing Kit for Mercruiser Gimbal Bearing","description":"\u003cp\u003eThe Sierra 18-21005K Seal \u0026amp; Bearing Kit is a replacement ball bearing and seal set built for Mercruiser gimbal bearing applications. It is designed as a direct-fit repair kit for boat owners and marine technicians who need to renew a worn or leaking gimbal bearing assembly without hunting down individual components separately. The kit pairs a metal ball bearing with matched seals so the bearing bore stays properly sealed against water intrusion, one of the most common causes of premature gimbal bearing failure on sterndrive boats.\u003c\/p\u003e\u003cp\u003eConstruction is metal for durability in the demanding marine environment, and the bearing is lubricated with grease to reduce friction and wear during operation. Sierra engineers its parts to meet or exceed the specification of the original equipment they replace, and the company supplies OEM engine manufacturers and boat builders with parts on a daily basis, so buyers can expect consistent fit and performance from the 18-21005K kit. Each kit is packaged as a complete, ready-to-install unit containing one bearing and its associated seal components.\u003c\/p\u003e\u003cp\u003eThis kit is intended for gimbal bearing service on Mercruiser sterndrive setups. Installers should confirm the bearing bore and shaft dimensions on their specific gimbal housing match this kit before ordering, as gimbal bearing kits are sized to a particular housing and drive combination.\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 18-21005K\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Seal \u0026amp; Bearing Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Mercruiser Gimbal Bearing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBearing Type:\u003c\/strong\u003e Ball Bearing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Lubricant:\u003c\/strong\u003e Grease\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 4.5 x 2.75 x 5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.51 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282187309\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e China\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the Sierra 18-21005K Seal \u0026amp; Bearing Kit?\u003c\/strong\u003e The Sierra 18-21005K kit includes one ball bearing and its matched seal components, packaged as a single ready-to-install seal and bearing kit for a package quantity of 1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is this kit used for?\u003c\/strong\u003e The 18-21005K is a seal and bearing kit for Mercruiser gimbal bearing service, replacing the bearing and seals in a gimbal bearing housing on a sterndrive boat.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Sierra 18-21005K made from?\u003c\/strong\u003e It is made of metal, with a ball bearing design lubricated with grease for smooth operation in marine use.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the Sierra 18-21005K Seal \u0026amp; Bearing Kit?\u003c\/strong\u003e The kit measures 4.5 x 2.75 x 5 inches and weighs 1.51 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-21005K a genuine Sierra part or aftermarket?\u003c\/strong\u003e 18-21005K is a Sierra-branded seal and bearing kit engineered to meet or exceed the specification of the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat type of bearing does this kit use?\u003c\/strong\u003e This kit uses a ball bearing, designated bearing number 18-21005K, matched with seals for the gimbal bearing bore.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat lubricant should be used with the 18-21005K bearing?\u003c\/strong\u003e The bearing in the 18-21005K kit is compatible with standard marine grease lubricant.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is the Sierra 18-21005K manufactured?\u003c\/strong\u003e The country of origin for the 18-21005K Seal \u0026amp; Bearing Kit is China.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many bearings come in one 18-21005K kit?\u003c\/strong\u003e Each 18-21005K kit has a package quantity of 1, containing a single seal and bearing set.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-21005K require special tools to install?\u003c\/strong\u003e The kit is a standard press-fit seal and bearing replacement for a gimbal bearing housing; installers should verify bore and shaft dimensions match their gimbal housing before installing the 18-21005K.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988091777243,"sku":"SIE-18-21005K","price":93.31,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-21005K__15377.1737884803.500.750.jpg?v=1785188518"},{"product_id":"sierra-18-2100k-seal-gimbal-bearing-kit-for-mercruiser-1-r-mr-alpha-one-1974-97-replaces-30-60794a2-greasable","title":"Sierra 18-2100K Seal and Bearing Kit for Mercruiser Gimbal Bearing, White","description":"\u003cp\u003eThe Sierra 18-2100K Seal and Bearing Kit is a gimbal bearing service kit designed to restore the seal and bearing components on the drive system, replacing worn or leaking originals with parts built to meet or exceed OEM specifications. This kit is engineered to handle the demands of high horsepower marine engines and the harsh conditions of saltwater and freshwater use, making it a dependable choice for routine maintenance or full seal and bearing replacement. It is finished in white and features a round profile consistent with standard gimbal bearing housings.\u003c\/p\u003e\u003cp\u003eSierra manufactures this kit to the same quality standards it supplies to OEM engine manufacturers and boat builders, so installers can expect a fit and function that matches the original equipment being replaced. The kit ships as a complete set (1 count) so all necessary seal and bearing components are included together, simplifying the service job and reducing the need to source individual pieces 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 18-2100K\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\u003eUnit Count:\u003c\/strong\u003e 1 count\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.54 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit Type:\u003c\/strong\u003e Universal fit\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eThis kit has a universal fit type; no specific make, horsepower, or model range is specified.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cp\u003eNo OEM cross-reference numbers are specified for this kit.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-2100K Seal and Bearing Kit used for?\u003c\/strong\u003e It is a seal and bearing kit used to service and restore the gimbal bearing assembly, replacing worn seals and bearings with parts built to meet or exceed the original equipment they replace.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2100K fit a specific boat make or engine model?\u003c\/strong\u003e The Sierra 18-2100K is listed with a universal fit type, meaning no single make, horsepower rating, or model range is specified for it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the 18-2100K kit?\u003c\/strong\u003e White is the finish color of the Sierra 18-2100K Seal and Bearing Kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many pieces come in the 18-2100K kit?\u003c\/strong\u003e The kit is sold as a single set, listed as a 1 count unit, containing the seal and bearing components together.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-2100K weigh?\u003c\/strong\u003e It weighs 1.54 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2100K an OEM part or an aftermarket replacement?\u003c\/strong\u003e It is an aftermarket kit manufactured by Sierra, built to meet or exceed the specifications of the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre there OEM cross-reference numbers for the 18-2100K?\u003c\/strong\u003e No OEM cross-reference or replaces numbers are specified for the Sierra 18-2100K Seal and Bearing Kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat shape is the seal and bearing housing in this kit?\u003c\/strong\u003e The Sierra 18-2100K has a round shape.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the 18-2100K be used in saltwater applications?\u003c\/strong\u003e Yes, the Sierra 18-2100K is built to stand up to the harsh marine environment, including the demands of saltwater use.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat quality standard does Sierra hold this kit to?\u003c\/strong\u003e Sierra engineers the 18-2100K to meet or exceed the original equipment part it replaces, the same standard it applies as a supplier to OEM engine manufacturers and boat builders.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988091842779,"sku":"SIE-18-2100K","price":77.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-2100K__63098.1737855155.500.750.jpg?v=1785188055"},{"product_id":"carrier-seal-for-mercruiser-stern-drive-replaces-821759a2-sierra-18-2354-wm-118-2354","title":"Sierra 18-2354 Carrier Seal for Mercruiser Stern Drive Forward and Reverse Gears","description":"\u003cp\u003eThe Sierra 18-2354 Carrier Seal is a round marine seal engineered for Mercruiser stern drive forward and reverse gear applications. It is designed to seal against water intrusion and lubricant loss at the gear carrier, helping protect the internal gear set from corrosion and contamination in the harsh marine environment. Sierra builds this seal to meet or exceed the performance of the original equipment part it replaces, and Sierra supplies OEM engine manufacturers and boat builders with parts of the same quality standard used in this seal.\u003c\/p\u003e\u003cp\u003eEach unit is sold individually as a single carrier seal, finished in white with a round profile to match its mounting bore. Its compact, lightweight construction (0.13 pounds) makes it a straightforward, low-cost replacement item to keep on hand for stern drive gear case service.\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 18-2354\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Carrier Seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Mercruiser Forward and Reverse Gears\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.13 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 seal per package\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282243524\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-2354 Carrier Seal used for?\u003c\/strong\u003e It is a carrier seal used in Mercruiser stern drive forward and reverse gear applications, sealing the gear carrier to help prevent water intrusion and lubricant loss.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2354 seal round or another shape?\u003c\/strong\u003e The Sierra 18-2354 Carrier Seal has a round shape, matching the round carrier bore it seals in the gear case.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-2354 Carrier Seal?\u003c\/strong\u003e It is white in color.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-2354 Carrier Seal weigh?\u003c\/strong\u003e The seal weighs 0.13 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many seals come in one package of the 18-2354?\u003c\/strong\u003e One Sierra 18-2354 Carrier Seal is included per package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2354 a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e Sierra 18-2354 is an aftermarket part manufactured by Sierra, built to meet or exceed the performance of the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes Sierra make this carrier seal, or another manufacturer?\u003c\/strong\u003e Yes, the 18-2354 Carrier Seal is manufactured by Sierra, a supplier of parts to OEM engine manufacturers and boat builders.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat gear case application does the 18-2354 carrier seal fit?\u003c\/strong\u003e This seal is categorized for Mercruiser forward and reverse gear applications on stern drive units.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the 18-2354 Carrier Seal be used as a routine maintenance replacement part?\u003c\/strong\u003e Yes, at 0.13 pounds and sold individually, the Sierra 18-2354 is a compact replacement seal suited to gear carrier service on Mercruiser stern drives.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the Sierra 18-2354?\u003c\/strong\u003e The order includes one Sierra 18-2354 Carrier Seal.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988105834715,"sku":"SIE-18-2354","price":29.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-2354__65465.1722372607.500.750.jpg?v=1785188314"},{"product_id":"sierra-18-2469-retainer-seal-kit-for-mercruiser-gearcase-drive-parts-mpn-118-2469","title":"Sierra Retainer Seal Kit 18-2469 for Mercruiser Gearcase and Drive","description":"\u003cp\u003eThe Sierra Retainer Seal Kit, part number 18-2469, is a gearcase and drive seal kit designed to restore a proper seal at the retainer during gearcase or drive maintenance and rebuilds on Mercruiser gearcase and drive units. Retainer seal kits like this one are used whenever a gearcase is opened up for service, since the original seals are typically compromised on removal and should not be reused. Installing a fresh retainer seal kit at reassembly helps maintain the lubricant seal at the retainer, protecting internal gearcase components from water intrusion and lubricant loss.\u003c\/p\u003e\u003cp\u003eThis kit is sold under the Sierra brand, a name widely used in the marine aftermarket for gearcase, drive, and engine seal and gasket kits. It is intended for technicians and boat owners performing gearcase or drive service on applicable Mercruiser units and is sized to fit as a direct kit for part number 18-2469.\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 18-2469\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Retainer Seal Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282386337\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1 pound\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 6 x 5 x 2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercruiser Gearcase and Drive Parts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eMercruiser gearcase and drive applications; consult your gearcase parts diagram to confirm part number 18-2469 is called for on your unit.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cp\u003eNo OEM cross-reference numbers are listed for this part number.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-2469 Retainer Seal Kit used for?\u003c\/strong\u003e Part number 18-2469 is a retainer seal kit used during gearcase or drive service to reseal the retainer area on Mercruiser gearcase and drive units.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2469 kit fit Mercruiser drives?\u003c\/strong\u003e Yes, the Sierra 18-2469 Retainer Seal Kit is categorized for Mercruiser gearcase and drive applications; check your unit's parts diagram to confirm 18-2469 is the correct kit for your specific gearcase.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-2469 Retainer Seal Kit weigh?\u003c\/strong\u003e The kit weighs 1 pound.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the package dimensions of the 18-2469 kit?\u003c\/strong\u003e The package measures 6 x 5 x 2 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre there OEM cross-reference numbers for part 18-2469?\u003c\/strong\u003e No OEM cross-reference or replacement numbers are listed for the Sierra 18-2469 Retainer Seal Kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2469 a genuine Sierra part or an aftermarket copy?\u003c\/strong\u003e Part number 18-2469 is a Sierra brand retainer seal kit, sold under the Sierra name as listed by its manufacturer part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should I replace the retainer seals with kit 18-2469?\u003c\/strong\u003e Retainer seals should be replaced any time the gearcase or drive retainer is removed for service, since original seals are generally not reusable; the 18-2469 kit supplies fresh seals for reassembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the 18-2469 Retainer Seal Kit?\u003c\/strong\u003e The Sierra 18-2469 kit is a retainer seal kit, supplying the seals needed to reseal the retainer during a gearcase or drive rebuild.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2469 Retainer Seal Kit?\u003c\/strong\u003e The UPC for this kit is 808282386337.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I reuse old retainer seals instead of buying the 18-2469 kit?\u003c\/strong\u003e Reusing old retainer seals is not recommended once a gearcase retainer has been removed, which is why a fresh kit like the Sierra 18-2469 is typically installed at reassembly.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988106653915,"sku":"SIE-18-2469","price":86.6,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-2469__82592.1739477160.500.750.jpg?v=1785189019"},{"product_id":"sierra-18-2586-upper-unit-seal-kit-for-volvo-penta-sx-thru-2006-replaces-oem-3850594","title":"Sierra 18-2586 Upper Unit Seal Kit for Volvo Penta - Replaces 3850594","description":"\u003cp\u003eThe Sierra 18-2586 Upper Unit Seal Kit is a rubber and silicone seal set engineered for sealing the upper unit on Volvo Penta drive applications. Built to prevent water intrusion and lubricant leakage at critical seal points, this kit is a straightforward way to restore a tight, reliable seal during a rebuild or routine maintenance of the upper drive unit. Each kit ships as a complete set (1 unit count) so you have the seals needed for the job in one package, without having to source individual components separately.\u003c\/p\u003e\u003cp\u003eThe kit is molded in white rubber and silicone material for durability and a consistent seal under marine operating conditions. It is manufactured in Taiwan and carries the Sierra brand's standard limited warranty. Boat owners and marine technicians use this kit when servicing Volvo Penta lower\/upper unit assemblies, replacing worn factory seals that have hardened, cracked, or begun to leak with age.\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 18-2586\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Upper Unit Seal Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Rubber, Silicone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Items:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.17 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 17.1 centimeters H x 3.5 centimeters L x 14 centimeters W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282227661\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Taiwan\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for sealing Volvo Penta drive engines.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e3850594\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2586 Upper Unit Seal Kit include?\u003c\/strong\u003e The kit includes 1 complete set of rubber and silicone seals for the upper unit, part number 18-2586, packaged as a single unit count.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does 18-2586 replace?\u003c\/strong\u003e Sierra 18-2586 replaces Volvo OEM part number 3850594.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is this seal kit used for?\u003c\/strong\u003e It seals the upper unit on Volvo Penta drive engines, preventing water intrusion and lubricant leakage at the seal points during a rebuild or routine service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material are the seals made from?\u003c\/strong\u003e The seals in kit 18-2586 are made from rubber and silicone, colored white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2586 seal kit weigh?\u003c\/strong\u003e The Sierra 18-2586 Upper Unit Seal Kit weighs 0.17 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is the Sierra 18-2586 seal kit manufactured?\u003c\/strong\u003e This seal kit is manufactured in Taiwan.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2586 kit genuine OEM or aftermarket?\u003c\/strong\u003e It is a Sierra-brand aftermarket replacement kit, designed to replace the equivalent Volvo OEM part 3850594.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many seals come in the 18-2586 kit?\u003c\/strong\u003e The kit ships as a single complete set, listed as 1 unit count, containing the seals needed for the upper unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-2586 kit come with a warranty?\u003c\/strong\u003e Yes, the 18-2586 Upper Unit Seal Kit is covered by Sierra's limited warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the package dimensions of the 18-2586 seal kit?\u003c\/strong\u003e The package for Sierra 18-2586 measures 17.1 centimeters H x 3.5 centimeters L x 14 centimeters W.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988107210971,"sku":"SIE-18-2586","price":62.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2586_lg__23844.1558124002.500.750.jpg?v=1785189150"},{"product_id":"sierra-18-2599-face-seal-and-tool-replaces-mercruiser-26-816575a2-fits-alpha-one-gen-ii-drives","title":"Sierra 18-2599 Face Seal and Tool, Fits Alpha One Gen II Drives, Replaces 26-816575A2","description":"\u003cp\u003eThe Sierra 18-2599 Face Seal and Tool is a drive seal designed for Alpha One Gen II sterndrives, supplied as a face seal along with the installation tool needed to seat it correctly. The face seal is a wear item inside the drive housing that maintains the seal between rotating and stationary components, and using the correct tool during installation helps the seal seat evenly and prevents damage that can occur when it is pressed in without one. The seal is molded from nitrile rubber or Viton, materials chosen for their resistance to marine lubricants, water intrusion, and the heat generated at the drive interface. Sierra manufactures this seal and tool to meet or exceed the specification of the original equipment part it replaces, and it is built to be interchangeable with the corresponding OEM and aftermarket part numbers used across Alpha One Gen II applications. The package includes one face seal and one tool, so no separate tool purchase is needed to complete the installation. This part is commonly replaced during drive seal service, prop shaft bearing carrier rebuilds, or general Alpha One Gen II maintenance where the face seal has begun to leak or show wear. Sierra backs this product with its standard customer satisfaction warranty.\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 18-2599\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Face Seal and Tool\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Nitrile rubber or Viton\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.01 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999875105\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Alpha One Gen II drives\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 26-816575A2\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eAlpha One Gen II drives\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e26-816575A2\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2599 fit?\u003c\/strong\u003e The Sierra 18-2599 Face Seal and Tool is designed for Alpha One Gen II sterndrives.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2599 the same as OEM part 26-816575A2?\u003c\/strong\u003e Yes, the Sierra 18-2599 is designed to be interchangeable with Mercruiser\/Mercury OEM part 26-816575A2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this part cross-reference to any other brands?\u003c\/strong\u003e Sierra 18-2599 is designed to be interchangeable with GLM 85590 and Mallory 9-3628, in addition to Mercruiser\/Mercury 26-816575A2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the package?\u003c\/strong\u003e One count of the face seal and one installation tool ship together in the Sierra 18-2599 package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the face seal made of?\u003c\/strong\u003e The Sierra 18-2599 face seal is molded from nitrile rubber or Viton, materials chosen for resistance to marine lubricants and water.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need a special tool to install this seal?\u003c\/strong\u003e No separate tool purchase is needed; the Sierra 18-2599 package already includes the tool required to seat the face seal correctly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-2599 weigh?\u003c\/strong\u003e The Sierra 18-2599 Face Seal and Tool weighs 0.01 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-2599 a genuine Sierra part or a generic aftermarket seal?\u003c\/strong\u003e It is a genuine Sierra-manufactured part, produced to meet or exceed the specification of the original equipment seal it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is a face seal used for on a sterndrive?\u003c\/strong\u003e A face seal, like the Sierra 18-2599, seals the interface inside the Alpha One Gen II drive housing to keep water out and lubricant in around the rotating shaft.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2599 covered under warranty?\u003c\/strong\u003e Yes, the Sierra 18-2599 Face Seal and Tool is covered under Sierra's customer satisfaction warranty.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988107342043,"sku":"SIE-18-2599","price":6.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2599_lg__79055.1558124792.500.750.jpg?v=1785188039"},{"product_id":"lower-unit-gear-housing-seal-kit-for-volvo-penta-sx-thru-2006-replaces-oem-3855275","title":"Sierra Gear Housing Seal Kit 18-2598, Replaces Volvo Penta 3855275","description":"\u003cp\u003eThe Sierra Gear Housing Seal Kit, part number 18-2598, is a lower unit gear housing seal set for Volvo Penta stern drive and outdrive applications. The kit is built to renew the sealing surfaces of the gear housing where the driveshaft and related components pass through, helping keep gear lubricant contained and water out of the lower unit during service or a full gear housing rebuild. Using a complete seal kit rather than sourcing individual seals ensures every wear point in the housing gets fresh sealing material at the same time, reducing the chance of a repeat teardown from a seal that was left in place. The kit is finished in white and is packaged as a single set ready to install during routine lower unit maintenance. It directly interchanges with Volvo Penta part number 3855275, making it a straightforward replacement for that OEM number without needing to track down individual Volvo Penta seal components. This is a maintenance item for boat owners and marine technicians performing scheduled gear housing service, winterization teardowns, or repairs following a suspected water intrusion or lubricant leak.\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 18-2598\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Gear Housing Seal Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Volvo Penta lower unit \/ gear housing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.17 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 4.318 H x 11.938 L x 8.636 W (centimeters)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1 kit\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits Volvo Penta applications using OEM gear housing seal 3855275.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eVolvo Penta 3855275\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2598 Gear Housing Seal Kit fit?\u003c\/strong\u003e The Sierra 18-2598 kit is designed for Volvo Penta lower unit \/ gear housing applications and directly interchanges with Volvo Penta seal part 3855275.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-2598 a direct replacement for Volvo Penta 3855275?\u003c\/strong\u003e Yes, Sierra part 18-2598 replaces Volvo Penta OEM number 3855275, so it can be installed in place of that part without modification.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the 18-2598 seal kit?\u003c\/strong\u003e The kit is packaged as a single complete set of gear housing seals, sold as one unit count, rather than individual loose seals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-2598 seal kit weigh?\u003c\/strong\u003e The Sierra Gear Housing Seal Kit 18-2598 weighs 0.17 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the package dimensions of the 18-2598 kit?\u003c\/strong\u003e The packaged kit measures 4.318 H x 11.938 L x 8.636 W in centimeters.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color are the seals in kit 18-2598?\u003c\/strong\u003e The seals and packaging for the Sierra 18-2598 Gear Housing Seal Kit are white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should I replace my gear housing seals with kit 18-2598?\u003c\/strong\u003e Gear housing seal kit 18-2598 is intended for use during scheduled lower unit maintenance, a full gear housing rebuild, or after signs of water intrusion or gear lubricant leakage from the housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-2598 a genuine Volvo Penta part or an aftermarket equivalent?\u003c\/strong\u003e Sierra 18-2598 is a Sierra-branded seal kit built to replace Volvo Penta part 3855275, functioning as an aftermarket equivalent to that OEM number rather than a Volvo Penta-branded part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use kit 18-2598 on any stern drive lower unit?\u003c\/strong\u003e Kit 18-2598 is built for Volvo Penta gear housing applications specifically; it is not stated to fit other manufacturers' lower units.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes replacing the seals with 18-2598 require a full lower unit teardown?\u003c\/strong\u003e Installing the Sierra 18-2598 Gear Housing Seal Kit is done during gear housing service, since the seals are located within the housing itself; the specific disassembly steps depend on the lower unit being serviced.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988107473115,"sku":"SIE-18-2598","price":41.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2598_lg__22235.1558124741.500.750.jpg?v=1785188868"},{"product_id":"sierra-18-2601-1-transom-seal-kit-replaces-mercury-30-803097t1-mercruiser-alpha-one-r-mr-1983-1990","title":"Sierra Transom Seal Kit 18-2601-1, Replaces 30-803097T1, Fits Mercury R, MR, Alpha One (1983-90) and Alpha One SS (1986-89)","description":"\u003cp\u003eThe Sierra 18-2601-1 Transom Seal Kit is a complete stainless steel gimbal bearing and bellows service kit for sterndrive units. It restores a watertight, corrosion-resistant seal at the transom assembly where the drive shaft, exhaust, and U-joint pass through the boat's hull, an area that must be replaced on a regular service interval to prevent water intrusion into the bilge or gearcase.\u003c\/p\u003e\u003cp\u003eThis kit contains a Sierra 18-2100 Gimbal Bearing (cross-referencing O.E. Numbers 30-60794A4 and 30-60794A2) and a Sierra 18-2751 U-Joint Bellows (cross-referencing O.E. Number 60932A4), each supplied in the correct quantity of one for a single transom service job. Components are manufactured in round, stainless steel construction for corrosion resistance in the marine environment.\u003c\/p\u003e\u003cp\u003eThe 18-2601-1 kit is designed to replace Mercury\/Mercruiser part number 30-803097T1. It fits Mercury R, MR, and Alpha One sterndrives (1983-90) with serial numbers 6225577 and up, as well as Alpha One SS sterndrives (1986-89) with serial numbers OA 545004 and up.\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 18-2601-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 5.35 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Shape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282186661\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents - Gimbal Bearing:\u003c\/strong\u003e Sierra 18-2100 (O.E. 30-60794A4, 30-60794A2), Qty 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents - U-Joint Bellows:\u003c\/strong\u003e Sierra 18-2751 (O.E. 60932A4), Qty 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury R, MR, Alpha One (1983-90), S\/N 6225577 \u0026amp; Up\u003c\/li\u003e\n\u003cli\u003eMercury Alpha One SS (1986-89), S\/N OA 545004 \u0026amp; Up\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e30-803097T1\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2601-1 Transom Seal Kit include?\u003c\/strong\u003e The kit includes a Sierra 18-2100 Gimbal Bearing (cross-referencing O.E. Numbers 30-60794A4 and 30-60794A2) and a Sierra 18-2751 U-Joint Bellows (cross-referencing O.E. Number 60932A4), each supplied in a quantity of one.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat Mercury drives does the 18-2601-1 fit?\u003c\/strong\u003e It fits Mercury R, MR, and Alpha One sterndrives (1983-90) with serial numbers 6225577 and up, and Mercury Alpha One SS sterndrives (1986-89) with serial numbers OA 545004 and up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the Sierra 18-2601-1 replace?\u003c\/strong\u003e The Sierra 18-2601-1 Transom Seal Kit replaces OEM part number 30-803097T1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-2601-1 kit made from?\u003c\/strong\u003e The components in the 18-2601-1 Transom Seal Kit are made of stainless steel with a round shape, providing corrosion resistance in marine service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-2601-1 Transom Seal Kit weigh?\u003c\/strong\u003e The 18-2601-1 Transom Seal Kit weighs 5.35 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the gimbal bearing in this kit sold separately?\u003c\/strong\u003e The gimbal bearing included in the 18-2601-1 kit is Sierra part number 18-2100, cross-referencing O.E. Numbers 30-60794A4 and 30-60794A2; it is packaged here as part of the 18-2601-1 Transom Seal Kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat U-joint bellows does the 18-2601-1 kit contain?\u003c\/strong\u003e It contains a Sierra 18-2751 U-Joint Bellows, which cross-references O.E. Part number 60932A4.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many of each part are in the transom seal kit?\u003c\/strong\u003e The 18-2601-1 kit contains one gimbal bearing and one U-joint bellows, matching the package quantity of one kit per unit sold.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes my serial number matter when ordering the 18-2601-1 kit?\u003c\/strong\u003e Yes. The kit fits Mercury R, MR, and Alpha One drives (1983-90) starting at serial number 6225577, and Alpha One SS drives (1986-89) starting at serial number OA 545004, so confirm your drive's serial number falls within these ranges before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2601-1 a genuine Sierra part?\u003c\/strong\u003e Yes, 18-2601-1 is the Sierra manufacturer part number for this Transom Seal Kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2601-1 kit?\u003c\/strong\u003e The Sierra 18-2601-1 Transom Seal Kit has UPC 808282186661.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988107899099,"sku":"SIE-18-2601-1","price":194.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/Untitled-1__63727.1753840676.500.750.jpg?v=1785189057"},{"product_id":"sierra-18-2622-bell-housing-bushing-kit-replaces-mercury-23-805041a2-for-mercruiser-sterndrive","title":"Sierra Bell Housing Bushing Kit 18-2622, Replaces Mercury Marine 23-805041A2","description":"\u003cp\u003eThe Sierra Bell Housing Bushing Kit, part number 18-2622, is a machined replacement bushing kit designed for the bell housing on applicable Mercury Marine drive and engine setups. This kit provides the precision-machined bushing needed to restore proper alignment and support between the engine and drive components, helping maintain smooth operation and reduce vibration or wear caused by a worn original bushing. The exterior finish is machined for accurate fit and consistent dimensional tolerances.\u003c\/p\u003e\u003cp\u003eCompact and lightweight, this kit is sized for straightforward installation as part of routine bell housing service or repair work. It is built to match the original equipment specification it replaces, making it a direct functional substitute where the corresponding Mercury Marine part is called for.\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 18-2622\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Bell Housing Bushing Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.19 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 1.06 x 4 x 5.12 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999975584\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercruiser Bellows\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits applications originally equipped with Mercury Marine part number 23-805041A2.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury Marine 23-805041A2\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2622 Bell Housing Bushing Kit fit?\u003c\/strong\u003e This kit is designed as a direct match for applications that originally used Mercury Marine part number 23-805041A2, making it a straightforward replacement for that bushing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2622 the same as Mercury Marine 23-805041A2?\u003c\/strong\u003e Yes, part number 18-2622 is built to replace Mercury Marine 23-805041A2 directly, so it can be used in place of that original part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the bushing made from?\u003c\/strong\u003e The bushing in kit 18-2622 has a machined exterior finish, giving it precise, consistent dimensions for a proper fit in the bell housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2622 bushing kit weigh?\u003c\/strong\u003e The Sierra Bell Housing Bushing Kit, part number 18-2622, weighs 0.19 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of this bushing kit?\u003c\/strong\u003e Part number 18-2622 measures 1.06 x 4 x 5.12 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Sierra part or an aftermarket copy?\u003c\/strong\u003e The 18-2622 Bell Housing Bushing Kit is a genuine Sierra part, manufactured under Sierra's own part number rather than being a generic aftermarket copy.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the 18-2622 kit?\u003c\/strong\u003e The kit includes the machined bell housing bushing identified by Sierra part number 18-2622.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this bushing a wear item that needs periodic replacement?\u003c\/strong\u003e Bell housing bushings like the 18-2622 can wear over time from normal operation, and replacing it with this kit restores proper fit between the engine and drive components.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes part number 18-2622 replace more than one OEM number?\u003c\/strong\u003e The only OEM cross-reference identified for the Sierra 18-2622 bushing kit is Mercury Marine 23-805041A2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2622 bushing kit still available from the manufacturer?\u003c\/strong\u003e Yes, the Sierra 18-2622 Bell Housing Bushing Kit is an active part and has not been discontinued by the manufacturer.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988108062939,"sku":"SIE-18-2622","price":42.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2622_lg__27815.1729087854.500.750.jpg?v=1785189105"},{"product_id":"upper-unit-seal-kit-18-2643-replaces-mercruiser-26-16709a2-for-bravo-blackhawk-upper-gear-housing","title":"Sierra 18-2643 Upper Unit Seal Kit for MerCruiser Bravo II X, Bravo III, Bravo III X and Blackhawk Drives","description":"\u003cp\u003eThe Sierra 18-2643 Upper Unit Seal Kit is a replacement seal set for the upper gear housing of MerCruiser Bravo II X, Bravo III, Bravo III X, and Blackhawk sterndrive units. This kit addresses the seals responsible for keeping gear lubricant contained and water out of the upper unit, a common service point during routine outdrive maintenance or when diagnosing gear housing leaks. Each kit ships as a complete set (one kit per package) so the seals can be replaced together during a single service interval, rather than sourcing individual seals separately.\u003c\/p\u003e\u003cp\u003eSierra manufactures this kit to meet or exceed the specifications of the original equipment seals it replaces, making it a direct equivalent for the applicable MerCruiser upper units. The kit fits specific serial-number ranges on the Bravo II X, Bravo III, Bravo III X, and Blackhawk drives, so confirming the drive model and serial number before ordering ensures the correct fit. As with all Sierra parts, this kit is backed by Sierra's standard limited warranty.\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 18-2643\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e MerCruiser Upper Gear Housing Seal Kit\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 030999875204\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e MerCruiser Bravo II X, Bravo III, Bravo III X, Blackhawk\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e GLM 87480, Mallory 9-74301, Mercruiser 26-16709A1, 27-16709A2\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMerCruiser Bravo II X, 2000-2010, serial number M100001 \u0026amp; up\u003c\/li\u003e\n\u003cli\u003eMerCruiser Bravo III, 1988-2010, serial number B664190 \u0026amp; up\u003c\/li\u003e\n\u003cli\u003eMerCruiser Bravo III X, 2000-2010, serial number M100001 \u0026amp; up\u003c\/li\u003e\n\u003cli\u003eMerCruiser Blackhawk, 1994-1995, serial number F186717 \u0026amp; up\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGLM 87480\u003c\/li\u003e\n\u003cli\u003eMallory 9-74301\u003c\/li\u003e\n\u003cli\u003eMercruiser 26-16709A1\u003c\/li\u003e\n\u003cli\u003e27-16709A2\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2643 Upper Unit Seal Kit fit?\u003c\/strong\u003e This kit fits MerCruiser Bravo II X (2000-2010, serial number M100001 \u0026amp; up), Bravo III (1988-2010, serial number B664190 \u0026amp; up), Bravo III X (2000-2010, serial number M100001 \u0026amp; up), and Blackhawk (1994-1995, serial number F186717 \u0026amp; up) upper units.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2643 kit interchangeable with OEM MerCruiser seals?\u003c\/strong\u003e Yes. The Sierra 18-2643 kit is cross-referenced to GLM 87480, Mallory 9-74301, Mercruiser 26-16709A1, and 27-16709A2, and is engineered to meet or exceed the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2643 seal kit weigh?\u003c\/strong\u003e The Sierra 18-2643 Upper Unit Seal Kit weighs 0.19 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color are the seals in the 18-2643 kit?\u003c\/strong\u003e The seals in the Sierra 18-2643 Upper Unit Seal Kit are white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat shape are the seals in this kit?\u003c\/strong\u003e The seals included in the 18-2643 kit are round.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-2643 kit fit a MerCruiser Bravo I drive?\u003c\/strong\u003e No fitment for a standard Bravo I is specified for the Sierra 18-2643 kit; it applies to Bravo II X, Bravo III, Bravo III X, and Blackhawk drives within the listed serial-number ranges.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if my drive is within the serial number range for this kit?\u003c\/strong\u003e Check your MerCruiser drive's serial number tag against the ranges for the Sierra 18-2643 kit: M100001 \u0026amp; up for Bravo II X and Bravo III X, B664190 \u0026amp; up for Bravo III, and F186717 \u0026amp; up for Blackhawk.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the 18-2643 kit?\u003c\/strong\u003e The Sierra 18-2643 Upper Unit Seal Kit includes one complete set of upper gear housing seals for the applicable MerCruiser drives.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-2643 a genuine Sierra part or aftermarket?\u003c\/strong\u003e The 18-2643 is a genuine Sierra part, manufactured by Sierra as a direct-fit replacement for the original MerCruiser upper unit seals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2643 kit come with a warranty?\u003c\/strong\u003e Yes, the Sierra 18-2643 Upper Unit Seal Kit is covered under Sierra's standard limited warranty like all Sierra parts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2643 kit?\u003c\/strong\u003e The UPC for the Sierra 18-2643 Upper Unit Seal Kit is 030999875204.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen would I need to replace the upper unit seals on a MerCruiser Bravo or Blackhawk drive?\u003c\/strong\u003e The Sierra 18-2643 kit is used when servicing the upper gear housing seals, typically to stop gear lubricant leaks or water intrusion in the upper unit of Bravo II X, Bravo III, Bravo III X, or Blackhawk drives.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988108095707,"sku":"SIE-18-2643","price":90.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2643_lg__56288.1558124042.500.750.jpg?v=1785188544"},{"product_id":"lower-unit-seal-kit-26-814669a2-for-mercury-chrysler-outboard-gearcase-sierra-18-2635","title":"Sierra 18-2635 Lower Unit Seal Kit for Mercury Outboard Gearcase, Replaces 26-814669A2","description":"\u003cp\u003eThe Sierra 18-2635 Lower Unit Seal Kit is a gearcase seal kit built for Mercury outboard lower units, engineered to meet or exceed the quality of the original equipment part it replaces. This kit is designed as a direct service replacement for worn or leaking lower unit seals, helping keep gear lube contained and water out of the gearcase during operation. As with all Sierra parts, it is manufactured to meet or exceed OEM specifications, giving installers confidence that fit and performance will match or surpass the factory original.\u003c\/p\u003e\u003cp\u003eThe kit is packaged as a single unit count and is cross-referenced to several legacy OEM and aftermarket part numbers, making it a straightforward match for technicians and boat owners searching by an older Chrysler, GLM, or Mallory reference number as well as the current Mercury number. It is intended for use during routine lower unit maintenance, gearcase rebuilds, or when addressing a lower unit oil leak.\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 18-2635\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\u003eCategory:\u003c\/strong\u003e Mercury Outboard Gearcase Seal Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.21 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282234966\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\u003eUnit Count:\u003c\/strong\u003e 1.0 Count\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for Mercury outboard gearcase applications.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eChrysler 26-814669A2\u003c\/li\u003e\n\u003cli\u003eChrysler 26-814669A1\u003c\/li\u003e\n\u003cli\u003eFK1234\u003c\/li\u003e\n\u003cli\u003eGLM 87809\u003c\/li\u003e\n\u003cli\u003eMallory 9-74204\u003c\/li\u003e\n\u003cli\u003eMercury 26-814669A2\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-2635 Lower Unit Seal Kit used for?\u003c\/strong\u003e It is a seal kit for a Mercury outboard lower unit gearcase, used to reseal the unit and stop gear lube leaks or water intrusion during routine maintenance or a gearcase rebuild.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2635 kit interchangeable with other brands' seal kits?\u003c\/strong\u003e Yes, Sierra part 18-2635 is interchangeable with Chrysler 26-814669A2, Chrysler 26-814669A1, FK1234, GLM 87809, Mallory 9-74204, and Mercury 26-814669A2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Mercury 26-814669A2 seal kit cross to a Sierra part number?\u003c\/strong\u003e Mercury 26-814669A2 crosses directly to Sierra 18-2635, the Lower Unit Seal Kit covered here.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2635 seal kit weigh?\u003c\/strong\u003e The Sierra 18-2635 Lower Unit Seal Kit weighs 0.21 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the 18-2635 seal kit?\u003c\/strong\u003e The seals in Sierra kit 18-2635 are white in color.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many pieces come in the Sierra 18-2635 kit?\u003c\/strong\u003e Sierra 18-2635 is sold as a 1.0 count unit, packaged as a complete lower unit seal kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-2635 an OEM or aftermarket part?\u003c\/strong\u003e It is a Sierra aftermarket replacement part manufactured to meet or exceed the original equipment quality of the Mercury lower unit seal it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2635 seal kit?\u003c\/strong\u003e The UPC for the Sierra 18-2635 Lower Unit Seal Kit is 808282234966.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat shape are the seals in the 18-2635 kit?\u003c\/strong\u003e The seals included in Sierra 18-2635 are round in shape.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-2635 kit fit older Chrysler outboard lower units?\u003c\/strong\u003e Since Sierra 18-2635 cross-references to Chrysler 26-814669A2 and 26-814669A1, it fits lower units originally serviced by those Chrysler part numbers.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988108161243,"sku":"SIE-18-2635","price":51.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2635_lg__13695.1558123567.500.750.jpg?v=1785188056"},{"product_id":"sierra-18-2624-lower-unit-seal-kit-replaces-mercury-26-85090a2-outboard-gearcase-seal-kit","title":"Sierra 18-2624 Lower Unit Seal Kit, Replaces 26-85090A2, Mercury Outboard Gearcase","description":"\u003cp\u003eThe Sierra 18-2624 Lower Unit Seal Kit is a gearcase seal kit built to restore a tight, leak-free lower unit on applicable Mercury outboard applications. Lower unit seals are a wear item: as the gearcase heats and cools through use, the rubber sealing lips lose their set and begin to weep gear lubricant or let water intrude, which left unaddressed can lead to contaminated gear oil and bearing or gear damage. This kit bundles the individual seal components needed to reseal the gearcase in one job rather than sourcing each seal separately, including an oil seal (Sierra part 18-0579) among its contents. Each Sierra seal is manufactured to meet or exceed the fit, finish, and performance of the original equipment part it replaces, so the kit installs and seals the same way the OEM components did. It is designed as a direct cross to Mercury\/Chrysler service number 26-85090A2, making it straightforward to identify against an existing parts diagram or an old seal kit box. As with any gearcase reseal, use the round shape and included seals in the positions specified for your particular lower unit, and always fill and check gear lubricant after reassembly to confirm the seal job holds under pressure.\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 18-2624\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercury Outboard Gearcase Seal Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1 kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.2 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e Oil Seal (Sierra 18-0579)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282243678\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits applications using Mercury\/Chrysler lower unit seal number 26-85090A2.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e26-85090A2\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2624 Lower Unit Seal Kit fit?\u003c\/strong\u003e The Sierra 18-2624 Lower Unit Seal Kit is designed as a direct replacement for Mercury\/Chrysler lower unit seal number 26-85090A2, making it suited to gearcases originally sealed with that OEM part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does 18-2624 cross to?\u003c\/strong\u003e Sierra 18-2624 crosses to OEM number 26-85090A2, so you can match it against that number on an existing parts diagram or old seal kit packaging.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the Sierra 18-2624 kit?\u003c\/strong\u003e The kit contains the oil seal (Sierra part 18-0579) along with the other seal components needed to reseal the lower unit gearcase in a single job.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2624 seal kit weigh?\u003c\/strong\u003e This Sierra lower unit seal kit weighs 0.2 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat shape and color are the seals in this kit?\u003c\/strong\u003e The seals in the Sierra 18-2624 kit are round and white in color.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2624 equivalent to the original Mercury seal kit?\u003c\/strong\u003e Yes, Sierra manufactures the 18-2624 kit to meet or exceed the quality of the original equipment seal kit it replaces, specifically OEM number 26-85090A2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many kits come in one order of 18-2624?\u003c\/strong\u003e One order of Sierra 18-2624 includes a single seal kit, listed as a unit count of 1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2624 kit genuine Sierra or aftermarket?\u003c\/strong\u003e The 18-2624 is a Sierra-branded aftermarket seal kit engineered to meet or exceed OEM specifications for the 26-85090A2 lower unit seal it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy would I need to replace the lower unit seals on my outboard?\u003c\/strong\u003e Lower unit seals lose their sealing set over time and use, which can let gear lubricant leak out or water intrude into the gearcase; the Sierra 18-2624 kit provides the seal components to reseal the unit and prevent that contamination.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat should I do after installing the Sierra 18-2624 seal kit?\u003c\/strong\u003e After installing the seals from the 18-2624 kit, refill the gearcase with the correct gear lubricant and check for leaks to confirm the reseal is holding.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2624 kit include the oil seal separately or as part of the set?\u003c\/strong\u003e The oil seal, Sierra part 18-0579, is included as one of the components within the 18-2624 lower unit seal kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2624 seal kit?\u003c\/strong\u003e The UPC for the Sierra 18-2624 Lower Unit Seal Kit is 808282243678.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988108194011,"sku":"SIE-18-2624","price":70.39,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2624_lg__93654.1558122984.500.750.jpg?v=1785189150"},{"product_id":"sierra-18-2646-1-lower-unit-seal-kit-for-mercruiser-alpha-one-gen-ii-sterndrive-replaces-26-816575a3","title":"Sierra 18-2646-1 Lower Unit Seal Kit for Alpha One Gen II Sterndrives","description":"\u003cp\u003eThe Sierra 18-2646-1 Lower Unit Seal Kit is a complete, single-package seal kit engineered for Alpha One Gen II sterndrives, including the Alpha One Gen II (CR) variant. It is built to reseal the lower unit during a gearcase rebuild or when addressing gear lube leaks, restoring a proper seal against water intrusion and lubricant loss. The kit ships as one count per package, so the full set of lower unit seals needed for the job is included together rather than sold as loose individual seals. Components in the kit are round in shape with a white finish. Sierra backs this kit, like all Sierra parts, with its customer satisfaction warranty.\u003c\/p\u003e\u003cp\u003eThis kit is specific to the Alpha One Gen II family and covers a broad span of production serial numbers, from early 1991-1995 units through 1998-2010 units. It is not the correct kit for the earlier Alpha One SS or for Bravo I\/Bravo II sterndrives, which use different Sierra kit numbers.\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 18-2646-1\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\u003eFitment:\u003c\/strong\u003e Alpha One Gen II and Alpha One Gen II (CR) sterndrives\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1 kit per package\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\u003eWeight:\u003c\/strong\u003e 0.23 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282258016\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAlpha One Gen II, 1991-1995, serial number D469859 through F679999\u003c\/li\u003e\n\u003cli\u003eAlpha One Gen II (CR), 1991-1995, serial number D469859 through F679999\u003c\/li\u003e\n\u003cli\u003eAlpha One Gen II, 1996-1997, serial number F680000 through K999999\u003c\/li\u003e\n\u003cli\u003eAlpha One Gen II (CR), 1996-2010, serial number F680000 and up\u003c\/li\u003e\n\u003cli\u003eAlpha One Gen II, 1998-2010, serial number L100040 and up\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2646-1 Lower Unit Seal Kit include?\u003c\/strong\u003e The Sierra 18-2646-1 is packaged as a single complete lower unit seal kit, one kit per package, rather than as individual loose seals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich sterndrives does Sierra 18-2646-1 fit?\u003c\/strong\u003e Sierra 18-2646-1 fits Alpha One Gen II and Alpha One Gen II (CR) sterndrives, covering serial ranges from D469859 through L100040 and up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes 18-2646-1 fit the Alpha One SS?\u003c\/strong\u003e No. The Alpha One SS (1986-1989) uses a different Sierra seal kit, 18-2652, so the Sierra 18-2646-1 kit is not the correct part for that drive.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill 18-2646-1 fit a Bravo I or Bravo II sterndrive?\u003c\/strong\u003e No, Bravo I and Bravo II sterndrives use a different Sierra kit, 18-2645, not the 18-2646-1 kit which is built specifically for Alpha One Gen II drives.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat serial number range does 18-2646-1 cover on early Alpha One Gen II units?\u003c\/strong\u003e For 1991-1995 Alpha One Gen II and Alpha One Gen II (CR) drives, the Sierra 18-2646-1 kit covers serial number D469859 through F679999.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs a different kit needed for later Alpha One Gen II sterndrives?\u003c\/strong\u003e No, the same Sierra 18-2646-1 kit also covers 1996-1997 units (serial F680000 through K999999), 1996-2010 CR units (serial F680000 and up), and 1998-2010 units (serial L100040 and up).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-2646-1 seal kit weigh?\u003c\/strong\u003e The Sierra 18-2646-1 Lower Unit Seal Kit weighs 0.23 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-2646-1 a genuine Sierra part with a warranty?\u003c\/strong\u003e Yes, the 18-2646-1 kit is a genuine Sierra part and, like all Sierra parts, is covered under Sierra's customer satisfaction warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color and shape are the components in kit 18-2646-1?\u003c\/strong\u003e The seal components in the Sierra 18-2646-1 kit are round and finished in white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many of these kits come in a package?\u003c\/strong\u003e Sierra 18-2646-1 ships as a single unit, one complete seal kit per package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes 18-2646-1 cover both the standard and CR versions of the Alpha One Gen II?\u003c\/strong\u003e Yes, the Sierra 18-2646-1 kit is listed for both the standard Alpha One Gen II and the Alpha One Gen II (CR) across the covered serial ranges.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988108226779,"sku":"SIE-18-2646-1","price":48.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2646-1_lg__19871.1558124217.500.750.jpg?v=1785188130"},{"product_id":"upper-unit-seal-kit-for-mercruiser-alpha-one-gen-ii-stern-drive-1991-up-replaces-26-88397a1","title":"Sierra Upper Unit Seal Kit 18-2644 - Replaces 26-88397A1 - Mercruiser Alpha I Generation II Stern Drive","description":"\u003cp\u003eThe Sierra 18-2644 Upper Unit Seal Kit supplies the seals and gaskets needed to properly rebuild the upper gear housing on a Mercruiser Alpha I Generation II stern drive. This kit replaces OEM number 26-88397A1 and is engineered to meet or exceed the specifications of the original equipment part it replaces. Sierra supplies many OEM engine manufacturers and boat builders with quality marine parts, and this seal kit is built to stand up to the harsh marine environment while sealing the upper unit against water intrusion and lubricant loss.\u003c\/p\u003e\u003cp\u003eThe kit contains a Seal Gasket (Sierra 18-2944, OE 26-45577-1) and a Drain Screw Gasket (Sierra 18-2945, OE 12-19183-3), each supplied in a quantity of 1, giving the installer the correct sealing components for an upper unit service or rebuild in one package. Using a complete seal kit at rebuild time helps prevent water intrusion into the gear housing and lubricant leaks that can lead to premature gear and bearing wear.\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 18-2644\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Upper Unit Seal Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.14 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 030999875211\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e Seal Gasket (18-2944, OE 26-45577-1), qty 1; Drain Screw Gasket (18-2945, OE 12-19183-3), qty 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercruiser Alpha I Generation II stern drive\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e26-88397A1\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2644 Upper Unit Seal Kit fit?\u003c\/strong\u003e The 18-2644 kit is designed for the Mercruiser Alpha I Generation II stern drive upper gear housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does 18-2644 replace?\u003c\/strong\u003e Sierra 18-2644 replaces OEM number 26-88397A1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the 18-2644 seal kit?\u003c\/strong\u003e The kit includes a Seal Gasket (Sierra 18-2944, OE 26-45577-1) and a Drain Screw Gasket (Sierra 18-2945, OE 12-19183-3), one of each.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2644 seal kit weigh?\u003c\/strong\u003e The Sierra 18-2644 Upper Unit Seal Kit weighs 0.14 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2644 kit genuine OEM or aftermarket?\u003c\/strong\u003e It is a Sierra aftermarket replacement kit engineered to meet or exceed the specifications of the original 26-88397A1 equipment it replaces, not a Mercruiser branded OEM part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should I replace the upper unit seal kit on my stern drive?\u003c\/strong\u003e The 18-2644 kit is intended for use during a rebuild or service of the Alpha I Generation II upper gear housing, whenever the existing seals and gaskets are removed or show signs of wear or leakage.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-2644 kit's gasket material?\u003c\/strong\u003e The gasket material included in the 18-2644 kit is white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2644 kit include a drain screw gasket?\u003c\/strong\u003e Yes, the kit includes Sierra 18-2945, a drain screw gasket with OE reference 12-19183-3, in a quantity of one.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat shape is the seal gasket in the 18-2644 kit?\u003c\/strong\u003e The seal gasket included in the Sierra 18-2644 kit is round in shape.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the 18-2644 kit on a different stern drive model?\u003c\/strong\u003e The 18-2644 kit is specified for the Mercruiser Alpha I Generation II upper unit; fitment to other stern drive models is not listed for this part.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988108259547,"sku":"SIE-18-2644","price":36.24,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2644_lg__34869.1558124107.500.750.jpg?v=1785188029"},{"product_id":"lower-unit-seal-kit-for-mercruiser-bravo-i-ii-iii-sterndrives-replaces-26-76868a1-sierra-18-2645-1","title":"Sierra Lower Unit Seal Kit 18-2645-1, Replaces 26-76868A1, Fits Mercruiser Bravo I, II and III","description":"\u003cp\u003eThe Sierra Lower Unit Seal Kit, part number 18-2645-1, is a complete gasket and seal set for rebuilding the lower gear housing on Mercruiser Bravo I, II, and III stern drive units. Instead of sourcing individual gaskets and seals separately, this kit bundles the three components needed for a proper lower unit reseal into one part number, helping ensure nothing is missed during a rebuild or seal replacement job.\u003c\/p\u003e\u003cp\u003eThe kit contains a gear housing drain screw gasket (OE 12-19183, quantity 2), a water pocket cover gasket (OE 27-55810, quantity 1), and an oil seal (OE 26-823894). These components are cross-referenced to fit in place of the original Mercruiser parts and are commonly needed together whenever the lower unit is opened up for service, such as during a water pump replacement, gear lube change with inspection, or general lower unit maintenance.\u003c\/p\u003e\u003cp\u003eThis kit is designed specifically for Bravo I, II, and III model stern drives and carries OEM cross-reference numbers 26-76868A1, 26-76868A2, and 26-76868A04, so it can be matched against those Mercruiser part numbers when confirming fitment. The kit weighs 0.42 pounds as packaged.\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 18-2645-1\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\u003eFitment:\u003c\/strong\u003e Mercruiser Bravo I, II \u0026amp; III Models\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross-Reference:\u003c\/strong\u003e 26-76868A1, 26-76868A2, 26-76868A04\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e Gear Housing Drain Screw Gasket (OE 12-19183, Qty 2), Water Pocket Cover Gasket (OE 27-55810, Qty 1), Oil Seal (OE 26-823894)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.42 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 1.5 x 6 x 6 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282383237\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercruiser Bravo I, II \u0026amp; III Models\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e26-76868A1\u003c\/li\u003e\n\u003cli\u003e26-76868A2\u003c\/li\u003e\n\u003cli\u003e26-76868A04\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2645-1 lower unit seal kit fit?\u003c\/strong\u003e This kit is designed for Mercruiser Bravo I, II, and III model stern drives and is used when servicing the lower gear housing on those units.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does 18-2645-1 replace?\u003c\/strong\u003e The kit cross-references to Mercruiser OEM numbers 26-76868A1, 26-76868A2, and 26-76868A04, so it can be used in place of any of those part numbers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the 18-2645-1 kit?\u003c\/strong\u003e Three components are included: a gear housing drain screw gasket (OE 12-19183, quantity 2), a water pocket cover gasket (OE 27-55810, quantity 1), and an oil seal (OE 26-823894).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many drain screw gaskets come in the kit?\u003c\/strong\u003e Two gear housing drain screw gaskets (OE 12-19183) are included in the 18-2645-1 kit, along with one water pocket cover gasket and one oil seal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-2645-1 seal kit weigh?\u003c\/strong\u003e The kit weighs 0.42 pounds as packaged.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the package dimensions of this kit?\u003c\/strong\u003e The Sierra 18-2645-1 lower unit seal kit measures 1.5 x 6 x 6 inches as packaged.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this an aftermarket or genuine Mercruiser part?\u003c\/strong\u003e 18-2645-1 is a Sierra-brand replacement kit manufactured to match the fit of the original Mercruiser components it cross-references, rather than a Mercruiser-branded part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen would I need to replace the seals in this kit?\u003c\/strong\u003e These gaskets and the oil seal are typically replaced whenever the lower gear housing on a Bravo I, II, or III drive is opened for service, such as during a rebuild or water pump job, to ensure a proper seal is maintained.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this kit work on Bravo I, II, and III drives interchangeably?\u003c\/strong\u003e Yes, the Sierra 18-2645-1 kit is listed for Bravo I, II, and III model stern drives.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2645-1 kit?\u003c\/strong\u003e The UPC for this Lower Unit Seal Kit is 808282383237.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988108292315,"sku":"SIE-18-2645-1","price":119.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-2645-1__51233.1737875437.500.750.jpg?v=1785188896"},{"product_id":"sierra-18-2653-lower-unit-seal-kit-replaces-mercury-26-55682a1-for-mercury-mariner-outboards","title":"Sierra 18-2653 Lower Unit Seal Kit, Replaces 26-55682A1, for Mercury\/Mariner Outboard Gearcase","description":"\u003cp\u003eThe Sierra 18-2653 Lower Unit Seal Kit is a gearcase reseal kit engineered for Mercury and Mariner outboard motors, built to restore a watertight, oil-tight lower unit during a gearcase rebuild or seal service. Sierra manufactures the kit to meet or exceed the original equipment part it replaces, so it is a direct, reliable substitute when the OEM seal kit is no longer available or when a shop prefers a proven aftermarket source. The kit is supplied as a complete set of gearcase seals and includes a rubber grommet (Sierra part 18-3110, O.E.# 26-38970) among its components, so a technician has the pieces needed to reseal the lower unit in a single service rather than sourcing individual seals separately.\u003c\/p\u003e\u003cp\u003eSierra parts are designed and tested to stand up to the harsh marine environment, resisting the effects of saltwater, fuel, and gear lubricant exposure over the life of the gearcase. This seal kit is intended for outboard owners, marine technicians, and repair shops performing lower unit maintenance, gearcase overhauls, or troubleshooting a leaking gearcase on Mercury and Mariner outboard motors.\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 18-2653\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\u003eApplication:\u003c\/strong\u003e Mercury\/Mariner outboard motor gearcase\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Rubber\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\u003eWeight:\u003c\/strong\u003e 0.28 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999312648\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Component:\u003c\/strong\u003e Grommet, Sierra 18-3110 (O.E.# 26-38970), Qty 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury outboard motors\u003c\/li\u003e\n\u003cli\u003eMariner outboard motors\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e26-55682A1\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2653 Lower Unit Seal Kit include?\u003c\/strong\u003e The kit includes the gearcase seals needed to reseal a Mercury or Mariner outboard lower unit, including a rubber grommet (Sierra 18-3110, O.E.# 26-38970) as one of its components.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich outboard motors is part number 18-2653 designed for?\u003c\/strong\u003e This seal kit is designed for Mercury and Mariner outboard motor lower units.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes 18-2653 replace OEM part 26-55682A1?\u003c\/strong\u003e Yes, Sierra 18-2653 directly replaces OEM number 26-55682A1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2653 seal kit weigh?\u003c\/strong\u003e The Sierra 18-2653 Lower Unit Seal Kit weighs 0.28 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material are the seals made from?\u003c\/strong\u003e The seals in kit 18-2653 are made of rubber.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the 18-2653 seal kit?\u003c\/strong\u003e The components in this kit are white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-2653 a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e 18-2653 is a Sierra aftermarket part manufactured to meet or exceed the original equipment part it replaces, rather than a Mercury-branded OEM part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen would I need to install the 18-2653 seal kit?\u003c\/strong\u003e This kit is used during a lower unit gearcase rebuild or reseal service on a Mercury\/Mariner outboard, such as when old seals are worn, leaking, or being replaced preventively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the shape of the seal components in this kit?\u003c\/strong\u003e The seal components included in the Sierra 18-2653 kit are round.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the grommet included in 18-2653 a separate purchasable part?\u003c\/strong\u003e Yes, the grommet included in this kit is also sold individually as Sierra part 18-3110, with O.E.# 26-38970.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2653 Lower Unit Seal Kit?\u003c\/strong\u003e The UPC for this kit is 030999312648.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988108357851,"sku":"SIE-18-2653","price":86.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2653_lg__35625.1558124454.500.750.jpg?v=1785188649"},{"product_id":"sierra-18-2648-upper-unit-seal-kit-for-mercruiser-1-alpha-one-drives-replaces-mercury-26-32511a1","title":"Sierra Upper Unit Seal Kit 18-2648, Replaces Mercury Marine 26-32511A1, MerCruiser Alpha One","description":"\u003cp\u003eThe Sierra 18-2648 Upper Unit Seal Kit supplies the seals needed to rebuild the upper gear housing on MerCruiser stern drive units. It is designed for the 888, 228, 250, and 260 stern drives as well as the MR Alpha One, Alpha One SS, and Alpha One Gen II drive families, covering multiple serial number ranges across those unit generations. The kit is used during a gear housing rebuild or seal replacement service, restoring the upper unit's ability to hold gear lubricant and keep water out of the drive, which protects the gears and bearings from corrosion and premature wear. This kit is a direct equivalent for Mercury Marine part number 26-32511A1, so it installs in place of the original equipment seal set without modification. As a kit, it bundles the seal components needed for the upper unit service in a single part number, saving the buyer from having to source individual seals separately. Because MerCruiser drive designs changed across model years and serial number breakpoints, always confirm the drive model and serial number against the fitment list below before ordering to be sure the 18-2648 kit matches the unit being serviced.\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 18-2648\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Upper Unit Seal Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Upper Unit Seal Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999755810\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.22 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 26-32511A1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e888 \/ 228 \/ 250 \/ 260, 1977-1982, serial number 4782330 to 6225576\u003c\/li\u003e\n\u003cli\u003eR, 1983, serial number 6225577 and up\u003c\/li\u003e\n\u003cli\u003eMR Alpha One, 1984-1990, serial number 6225577 to D469858\u003c\/li\u003e\n\u003cli\u003eMR Alpha One (CR), 1984-1990, serial number 6225577 to D469858\u003c\/li\u003e\n\u003cli\u003eAlpha One SS, 1986-1989, serial number A545004 and up\u003c\/li\u003e\n\u003cli\u003eAlpha One Gen II, 1991-1995, serial number D469859 to F679999\u003c\/li\u003e\n\u003cli\u003eAlpha One Gen II (CR), 1991-1995, serial number D469859 to F679999\u003c\/li\u003e\n\u003cli\u003eAlpha One Gen II, 1996-1997, serial number F680000 to K999999\u003c\/li\u003e\n\u003cli\u003eAlpha One Gen II (CR), 1996-2010, serial number F680000 and up\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury Marine 26-32511A1\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2648 Upper Unit Seal Kit fit?\u003c\/strong\u003e The 18-2648 kit fits MerCruiser 888, 228, 250, and 260 stern drives from 1977-1982, plus the MR Alpha One, Alpha One SS, and Alpha One Gen II drive families across specific serial number ranges, from serial number 4782330 up through the F680000-and-up range depending on the model.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2648 kit the same as Mercury Marine 26-32511A1?\u003c\/strong\u003e Yes, Sierra part number 18-2648 is a direct equivalent to Mercury Marine part number 26-32511A1 and installs in its place.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2648 Upper Unit Seal Kit weigh?\u003c\/strong\u003e The Sierra 18-2648 Upper Unit Seal Kit weighs 0.22 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the 18-2648 kit?\u003c\/strong\u003e The kit includes the seal set needed to service the upper gear housing on the applicable MerCruiser drive, packaged as a single Upper Unit Seal Kit under part number 18-2648.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill 18-2648 fit an Alpha One SS drive?\u003c\/strong\u003e Yes, the 18-2648 kit fits the Alpha One SS drive for the 1986-1989 model years, serial number A545004 and up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the serial number matter when ordering this seal kit?\u003c\/strong\u003e Yes, because MerCruiser drive designs changed across production, the 18-2648 kit applies to specific serial number ranges within each model, so the drive's serial number should be checked against the fitment list to confirm this is the correct kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-2648 for the upper or lower gear housing?\u003c\/strong\u003e The 18-2648 kit is specifically for the upper unit (upper gear housing), not the lower unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes 18-2648 fit the Alpha One Gen II drive?\u003c\/strong\u003e Yes, the 18-2648 kit covers the Alpha One Gen II drive for 1991-1995 and 1996-1997, as well as the Alpha One Gen II (CR) variant for 1991-1995 and 1996-2010.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2648 a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e Sierra 18-2648 is an aftermarket seal kit manufactured as a direct replacement for the Mercury Marine OEM part 26-32511A1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan this kit be used on the 888, 228, 250, or 260 stern drive models?\u003c\/strong\u003e Yes, part number 18-2648 is listed for the 888, 228, 250, and 260 stern drives for the 1977-1982 model years, serial number range 4782330 to 6225576.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988108390619,"sku":"SIE-18-2648","price":25.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2648_lg__60355.1558124274.500.750.jpg?v=1785188689"},{"product_id":"sierra-18-2655-lower-unit-seal-kit-replaces-mercury-26-89238a2-for-mercury-mariner-135-200-hp-v-6-outboards","title":"Sierra Lower Unit Seal Kit 18-2655, Replaces 26-89238A2, Fits Mercury\/Mariner V-6 135\/150 \u0026 175\/200 Outboards","description":"\u003cp\u003eThe Sierra 18-2655 is a lower unit seal kit built to reseal the gearcase on Mercury\/Mariner V-6 outboards. It fits 135\/150 V-6 outboards with serial number 0A904646 and newer, and 175\/200 V-6 outboards with serial number 6618751 and newer. The kit is designed as a direct replacement for Mercury Marine OEM part 26-89238A2, giving boat owners and technicians a straightforward way to restore the lower unit seal without sourcing individual OEM components.\u003c\/p\u003e\u003cp\u003eInside the kit is a bushing gasket (Sierra 18-2155, OEM equivalent 23-77631A2), supplied in a quantity of one, so the correct gasket is on hand when the gearcase is opened up for service. The kit ships in white and is compact, weighing 0.28 pounds, making it easy to store in a parts bin or take along for on-water repairs. As with other Sierra parts, it is backed by Sierra's customer satisfaction warranty, giving buyers confidence in fit and quality when servicing these Mercury\/Mariner V-6 lower units.\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 18-2655\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\u003eCategory:\u003c\/strong\u003e Mercury Outboard Gearcase Seal Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e Bushing gasket (Sierra 18-2155), Qty 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 26-89238A2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.28 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999312662\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit Type:\u003c\/strong\u003e Universal Fit\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury\/Mariner 135\/150 V-6 (serial number 0A904646 and newer)\u003c\/li\u003e\n\u003cli\u003eMercury\/Mariner 175\/200 V-6 (serial number 6618751 and newer)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e26-89238A2\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2655 Lower Unit Seal Kit fit?\u003c\/strong\u003e The 18-2655 fits Mercury\/Mariner 135\/150 V-6 outboards with serial number 0A904646 and newer, and 175\/200 V-6 outboards with serial number 6618751 and newer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2655 an OEM replacement?\u003c\/strong\u003e Yes, it replaces Mercury Marine OEM part 26-89238A2 and is designed to match the original lower unit seal kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the Sierra 18-2655 kit?\u003c\/strong\u003e One bushing gasket, Sierra part 18-2155 with OEM equivalent 23-77631A2, supplied in a quantity of one.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does this seal kit weigh?\u003c\/strong\u003e The Sierra 18-2655 Lower Unit Seal Kit weighs 0.28 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-2655 kit?\u003c\/strong\u003e It measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-2655 kit?\u003c\/strong\u003e The kit is white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2655 come with a warranty?\u003c\/strong\u003e Yes, the 18-2655 is covered under Sierra's customer satisfaction warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I confirm the 18-2655 fits my outboard?\u003c\/strong\u003e Check your outboard's serial number against the fitment ranges: 135\/150 V-6 at 0A904646 and newer, or 175\/200 V-6 at 6618751 and newer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2655?\u003c\/strong\u003e The UPC is 030999312662.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the 18-2655 be used on both 135\/150 and 175\/200 Mercury\/Mariner V-6 outboards?\u003c\/strong\u003e Yes, the 18-2655 kit covers both the 135\/150 V-6 (0A904646 and newer) and 175\/200 V-6 (6618751 and newer) engine families.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988108423387,"sku":"SIE-18-2655","price":58.35,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2655_lg__27310.1558124596.500.750.jpg?v=1785189164"},{"product_id":"sierra-18-2658-lower-unit-gear-housing-seal-kit-replaces-omc-396351-johnson-evinrude-40-48-50-hp-1989-2003-50-75-hp-3-cyl-1979-2003","title":"Sierra 18-2658 Lower Unit Seal Kit for Johnson\/Evinrude Outboard Motor, Replaces 396351","description":"\u003cp\u003eThe Sierra 18-2658 Lower Unit Seal Kit is a complete gear housing reseal kit for Johnson\/Evinrude outboard motors, built to meet or exceed original equipment quality. Lower unit seals wear out from heat cycling and constant contact with gear lube and water, and a failed seal lets gear lube leak out or water intrude into the gear case, leading to corrosion and gear damage. This kit bundles the parts needed to reseal the lower unit in one purchase rather than sourcing each seal separately.\u003c\/p\u003e\u003cp\u003eInside the kit you get an impeller plate gasket (Sierra 18-0124, OE 325537, qty 1) and oil seals (Sierra 18-2026, OE 321453, qty 2), giving you the gasket and seal set most commonly needed during a lower unit rebuild or water pump service on applicable Johnson\/Evinrude outboards. Because fit is engine-specific, confirm your outboard's part numbers against this kit before ordering.\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 18-2658\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\u003eCategory:\u003c\/strong\u003e Evinrude Outboard Gear Housing Seal Kits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e Impeller Plate Gasket (18-0124, OE 325537, qty 1); Oil Seal (18-2026, OE 321453, qty 2)\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\u003eWeight:\u003c\/strong\u003e 0.17 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999312693\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFor Johnson\/Evinrude outboard motors.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e396351\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2658 Lower Unit Seal Kit include?\u003c\/strong\u003e The kit includes an impeller plate gasket (Sierra 18-0124, OE 325537, qty 1) and oil seals (Sierra 18-2026, OE 321453, qty 2), giving you the gasket and seal set for resealing the lower unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat outboard motors is the 18-2658 seal kit for?\u003c\/strong\u003e Sierra 18-2658 is built for Johnson\/Evinrude outboard motors that use OEM part 396351.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes 18-2658 replace OEM part 396351?\u003c\/strong\u003e Yes, Sierra 18-2658 replaces OEM number 396351.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many oil seals come in the kit?\u003c\/strong\u003e Two oil seals (Sierra 18-2026, OE 321453) are included in the 18-2658 kit, along with one impeller plate gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Sierra part or aftermarket?\u003c\/strong\u003e The 18-2658 Lower Unit Seal Kit is a Sierra-branded part manufactured to meet or exceed original equipment quality.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2658 seal kit weigh?\u003c\/strong\u003e The Sierra 18-2658 kit weighs 0.17 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color and shape are the seals in this kit?\u003c\/strong\u003e The components in Sierra kit 18-2658 are white and round.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use this kit for a water pump service on my outboard?\u003c\/strong\u003e Yes, the impeller plate gasket and oil seals in the 18-2658 kit are commonly needed parts during lower unit and water pump service on applicable Johnson\/Evinrude outboards.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I confirm the 18-2658 kit fits my outboard?\u003c\/strong\u003e Check that your outboard's lower unit calls for OEM part 396351, since Sierra 18-2658 is fit specific and replaces that number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2658 kit?\u003c\/strong\u003e The UPC for Sierra 18-2658 is 030999312693.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988108456155,"sku":"SIE-18-2658","price":48.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2658_lg__20132.1558124822.500.750.jpg?v=1785189150"},{"product_id":"lower-unit-gear-housing-seal-kit-26-33144a2-for-mercruiser-alpha-one-mr-r-stern-drives-sierra-18-2652-replaces-43-803091t1","title":"Sierra Lower Unit Seal Kit 18-2652 for Mercruiser Alpha One, Alpha One SS, MR, R Stern Drives (Replaces 26-33144A2)","description":"\u003cp\u003eThe Sierra 18-2652 Lower Unit Seal Kit is a gear housing seal set built for Mercruiser stern drive lower units, covering the IA\/IB\/IC and EZ Shift, MC-I, R, MR, Alpha One, Alpha One SS, and Alpha One Gen II drive families. The kit is machined to precise tolerances so the seals seat correctly in the lower gear housing bore, helping maintain the gear lube seal that keeps water out of the drive and gear oil in. It is used during lower unit rebuilds, gear housing seal replacement, and general stern drive maintenance whenever the lower unit is opened up for service. Sierra manufactures the kit to meet or exceed the original equipment part it replaces, and it is designed to be interchangeable with GLM, Mallory, and Mercruiser OEM seal part numbers, so it drops into the same lower unit application without modification. Because it is a small, precision-machined component, proper installation depth and orientation matter for a leak-free seal, so it should be installed following the stern drive manufacturer's lower unit service procedure. This kit is intended for the specific Mercruiser drive models and year ranges listed below; confirm your drive model and serial number range before ordering to ensure correct fit.\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 18-2652\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\u003eCategory:\u003c\/strong\u003e Mercruiser Lower Gear Housing Seal Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.28 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\u003eFinish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999312631\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Mercruiser IA\/IB\/IC and EZ Shift, MC-I, R, MR, Alpha One, Alpha One SS, Alpha One Gen II stern drives\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e GLM 87510, Mallory 9-74304, Mercruiser 26-89238A1, 26-33144A1, 26-33144A2\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e888 \/ 228 \/ 250 \/ 260, 1977-1982\u003c\/li\u003e\n\u003cli\u003eR, 1983\u003c\/li\u003e\n\u003cli\u003eMR, Alpha One, 1984-1990\u003c\/li\u003e\n\u003cli\u003eAlpha One SS, 1986-1989\u003c\/li\u003e\n\u003cli\u003eAlpha One Gen II, 1991-1995\u003c\/li\u003e\n\u003cli\u003eAlpha One Gen II, 1996-1997\u003c\/li\u003e\n\u003cli\u003eAlpha One Gen II (CR), 1996-2010\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGLM 87510\u003c\/li\u003e\n\u003cli\u003eMallory 9-74304\u003c\/li\u003e\n\u003cli\u003eMercruiser 26-89238A1\u003c\/li\u003e\n\u003cli\u003eMercruiser 26-33144A1\u003c\/li\u003e\n\u003cli\u003eMercruiser 26-33144A2\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2652 Lower Unit Seal Kit fit?\u003c\/strong\u003e The 18-2652 kit fits Mercruiser IA\/IB\/IC and EZ Shift, MC-I, R, MR, Alpha One, Alpha One SS, and Alpha One Gen II stern drive lower units, covering model years from 1977 through 2010 depending on the specific drive and serial number range.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2652 kit compatible with Alpha One Gen II drives?\u003c\/strong\u003e Yes, Sierra 18-2652 is listed for Alpha One Gen II drives built for the 1991-1995 and 1996-1997 model years, as well as the Alpha One Gen II (CR) configuration covering 1996-2010.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-2652 seal kit replace?\u003c\/strong\u003e It is designed to be interchangeable with GLM 87510, Mallory 9-74304, and Mercruiser 26-89238A1, 26-33144A1, and 26-33144A2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes 18-2652 cross-reference to a Mercury Marine part number?\u003c\/strong\u003e Yes, the Sierra 18-2652 Lower Unit Seal Kit cross-references to Mercury Marine 26-33144A2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-2652 seal kit weigh?\u003c\/strong\u003e The kit weighs 0.28 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-2652 seal kit?\u003c\/strong\u003e The Sierra 18-2652 kit measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill 18-2652 fit a 1983 MC-I drive?\u003c\/strong\u003e Yes, the R model 1983 application (serial numbers 6225577 and up) is covered by the Sierra 18-2652 lower unit seal kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2652 a genuine Sierra part or an aftermarket copy?\u003c\/strong\u003e It is a genuine Sierra-manufactured part, made to meet or exceed the specifications of the original equipment seal it replaces, and it carries Sierra's standard customer satisfaction warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat finish does the 18-2652 seal kit have?\u003c\/strong\u003e The Sierra 18-2652 Lower Unit Seal Kit has a machined exterior finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen would I need to install the 18-2652 seal kit?\u003c\/strong\u003e This kit is used when servicing the lower gear housing on a compatible Mercruiser stern drive, such as during a lower unit rebuild or when gear lube seals need replacing to stop water intrusion or oil leaks.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2652 kit fit the Alpha One SS drive?\u003c\/strong\u003e Yes, Sierra 18-2652 is listed for the Alpha One SS drive covering the 1986-1989 model years, serial numbers A545004 and up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2652 Lower Unit Seal Kit?\u003c\/strong\u003e The UPC for this product is 030999312631.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988108488923,"sku":"SIE-18-2652","price":55.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2652_lg__79248.1722514186.500.750.jpg?v=1785188029"},{"product_id":"sierra-18-2656-lower-unit-seal-kit-replaces-omc-396350-for-johnson-evinrude-outboards-up-to-225-hp","title":"Sierra 18-2656 Lower Unit Seal Kit, Replaces OMC 396350, for Johnson\/Evinrude Outboard Motor","description":"\u003cp\u003eThe Sierra 18-2656 Lower Unit Seal Kit is a gear housing reseal kit built for Johnson\/Evinrude outboard motors, engineered to meet or exceed original equipment quality. The kit contains the oil seals needed to reseal the lower unit gear case, helping keep gear lube inside and water out during service or after a lower unit rebuild. It is designed as a direct equivalent to the original equipment part it replaces, so installation and fit match the OEM component it is servicing.\u003c\/p\u003e\u003cp\u003eInside the kit are two individual oil seals: part 18-2025 (O.E. 318971) and part 18-2028 (O.E. 321480), covering the seal points typically required for a complete lower unit reseal on applicable Johnson\/Evinrude outboards. The kit is finished in white and uses aluminum in its construction. This is a service kit intended for technicians and DIY boat owners performing lower unit maintenance, gear seal replacement, or a full lower unit teardown and rebuild.\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 18-2656\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\u003eKit Contents:\u003c\/strong\u003e Oil Seal 18-2025 (O.E. 318971), Oil Seal 18-2028 (O.E. 321480)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.11 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999312679\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Use:\u003c\/strong\u003e Seal kit for Johnson\/Evinrude outboard motor\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJohnson\/Evinrude outboard motors\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e396350\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2656 Lower Unit Seal Kit fit?\u003c\/strong\u003e The Sierra 18-2656 is a lower unit seal kit designed for Johnson\/Evinrude outboard motors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the 18-2656 replace?\u003c\/strong\u003e The 18-2656 kit replaces OEM number 396350 on applicable Johnson\/Evinrude outboards.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the 18-2656 kit?\u003c\/strong\u003e The kit contains two oil seals: part 18-2025 (O.E. 318971) and part 18-2028 (O.E. 321480).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2656 an aftermarket or genuine OEM part?\u003c\/strong\u003e It is an aftermarket seal kit, built to meet or exceed the quality of the original equipment seal kit it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material are the seals made of?\u003c\/strong\u003e The 18-2656 kit uses aluminum in its construction.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2656 seal kit weigh?\u003c\/strong\u003e The Sierra 18-2656 Lower Unit Seal Kit weighs 0.11 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-2656 kit?\u003c\/strong\u003e The kit is finished in white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen would I need this seal kit?\u003c\/strong\u003e This kit is used when resealing the lower unit gear case during service, gear seal replacement, or a full lower unit rebuild on a Johnson\/Evinrude outboard.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre there other seal kits that cross to the same OEM number?\u003c\/strong\u003e Yes, the 18-2656 is cross-referenced to the same OEM 396350 seal application as GLM 87602 and Mallory 9-74100.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2656?\u003c\/strong\u003e The UPC for the Sierra 18-2656 Lower Unit Seal Kit is 030999312679.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2656 kit include installation hardware or gaskets?\u003c\/strong\u003e The kit includes the two oil seals (18-2025 and 18-2028); no additional hardware is listed as included.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this kit specific to one lower unit or a range of models?\u003c\/strong\u003e The 18-2656 is a Johnson\/Evinrude outboard lower unit seal kit; confirm your outboard's gear housing uses OEM seal 396350 before ordering.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988108521691,"sku":"SIE-18-2656","price":39.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2656_lg__74458.1558124651.500.750.jpg?v=1785188544"},{"product_id":"sierra-18-2660-lower-unit-seal-kit-for-johnson-evinrude-outboards-replaces-oem-0396349-glm-87601-mallory-9-74103","title":"Sierra Lower Unit Seal Kit 18-2660, Replaces 396349, for Johnson\/Evinrude Outboard Motors","description":"\u003cp\u003eThe Sierra 18-2660 Lower Unit Seal Kit is a gear housing seal kit built for Johnson and Evinrude outboard motors. It supplies the oil seals needed to reseal the lower unit and prevent gear lube from escaping or water from entering the gear case, a common maintenance need any time the lower unit is opened up for service or after a water-intrusion issue is diagnosed. The kit contains two individually numbered oil seals: the 18-2059 oil seal (O.E. 321466) and the 18-2064 oil seal (O.E. 332205), each manufactured to meet or exceed the quality of the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003eUsing the correct seal kit during a lower unit rebuild helps maintain a proper gear lube seal, which protects the gear case from corrosion and premature wear caused by water contamination. The kit is designed as a direct replacement for the original Johnson\/Evinrude part 396349, so it drops into the same lower unit assembly without modification. It is intended for outboard owners and marine technicians performing lower unit reseals, gear case rebuilds, or preventive maintenance on Johnson\/Evinrude outboards.\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 18-2660\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\u003eContains:\u003c\/strong\u003e 18-2059 Oil Seal (O.E. 321466), 18-2064 Oil Seal (O.E. 332205)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.22 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 030999312716\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJohnson\/Evinrude outboard motors\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e396349\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2660 Lower Unit Seal Kit include?\u003c\/strong\u003e The kit includes two oil seals: an 18-2059 oil seal (O.E. 321466) and an 18-2064 oil seal (O.E. 332205), both intended for resealing the lower unit gear housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat outboard motors does the 18-2660 seal kit fit?\u003c\/strong\u003e This seal kit is designed for Johnson and Evinrude outboard motors that use the 396349 lower unit seal kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2660 a direct replacement for OEM part 396349?\u003c\/strong\u003e Yes, the 18-2660 kit replaces the original Johnson\/Evinrude part number 396349 and is built to meet or exceed the quality of the original equipment part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2660 seal kit weigh?\u003c\/strong\u003e The Sierra 18-2660 Lower Unit Seal Kit weighs 0.22 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color are the seals in the 18-2660 kit?\u003c\/strong\u003e The seals in this kit are white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should I install a lower unit seal kit like the 18-2660?\u003c\/strong\u003e A lower unit seal kit such as the 18-2660 should be installed any time the gear housing is opened for service, or when gear lube is found to be contaminated with water, indicating a failed seal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre the seals in the 18-2660 kit genuine OEM parts?\u003c\/strong\u003e No, the Sierra 18-2660 is an aftermarket seal kit manufactured to meet or exceed the quality of the original equipment seals it replaces, rather than being sourced from Johnson\/Evinrude directly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the shape of the oil seals in the 18-2660 kit?\u003c\/strong\u003e Both oil seals included in the Sierra 18-2660 kit are round in shape.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2660 kit include gaskets or just seals?\u003c\/strong\u003e The 18-2660 kit contains two oil seals, the 18-2059 and 18-2064, and does not list any gaskets as included components.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2660 Lower Unit Seal Kit?\u003c\/strong\u003e The UPC for the Sierra 18-2660 Lower Unit Seal Kit is 030999312716.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988108554459,"sku":"SIE-18-2660","price":51.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2660_lg__06158.1558124972.500.750.jpg?v=1785188504"},{"product_id":"lower-unit-seal-kit-for-evinrude-johnson-omc-outboards-replaces-oem-396355-sierra-18-2659","title":"Sierra Lower Unit Seal Kit 18-2659, Replaces OMC 396355, for Evinrude\/Johnson Outboard Gear Housings","description":"\u003cp\u003eThe Sierra 18-2659 Lower Unit Seal Kit is a gear housing seal kit for Evinrude\/Johnson (OMC) outboards, engineered to restore a watertight seal at the lower unit and prevent gearcase oil loss or water intrusion. It replaces OMC part number 396355 and is built as a complete kit so the impeller housing gasket and oil seal are replaced together during a lower unit service, rather than sourcing each component separately.\u003c\/p\u003e\u003cp\u003eThe kit contains two components matched to their original equipment specifications: an impeller housing gasket (Sierra 18-0969, O.E. 319586, qty. 1) that seals the water pump housing to the gearcase, and an oil seal (Sierra 18-2059, O.E. 321466, qty. 1) that keeps gear lubricant contained within the lower unit. Using the correct gasket and seal combination helps maintain proper water pump cooling and gearcase lubrication after a water pump impeller replacement or lower unit rebuild.\u003c\/p\u003e\u003cp\u003eThis kit is intended for technicians and boat owners performing routine lower unit maintenance or repair on applicable Evinrude\/Johnson outboard gear housings, and is sold as a single part number, 18-2659, covering both included components.\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 18-2659\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\u003eReplaces (OEM):\u003c\/strong\u003e 396355\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.21 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999312709\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents - Impeller Housing Gasket:\u003c\/strong\u003e Sierra 18-0969, O.E. 319586, Qty. 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents - Oil Seal:\u003c\/strong\u003e Sierra 18-2059, O.E. 321466, Qty. 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eEvinrude\/Johnson (OMC) outboard gear housings originally fitted with OMC part number 396355\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e396355\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2659 Lower Unit Seal Kit replace?\u003c\/strong\u003e It replaces OMC part number 396355, so any gear housing originally using that OMC number can use Sierra 18-2659 instead.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the 18-2659 kit?\u003c\/strong\u003e Two components ship together: an impeller housing gasket (Sierra 18-0969, O.E. 319586) and an oil seal (Sierra 18-2059, O.E. 321466), one of each.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Sierra part or an aftermarket copy?\u003c\/strong\u003e The 18-2659 kit is manufactured and sold under the Sierra brand, built to the original OMC 396355 specification rather than being a generic substitute.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the seal kit weigh?\u003c\/strong\u003e The complete 18-2659 kit weighs 0.21 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this kit include a full gasket set or just the oil seal?\u003c\/strong\u003e It includes both an impeller housing gasket and an oil seal, not just a single seal, so both wear items are replaced in one kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat make of outboard is the 18-2659 kit designed for?\u003c\/strong\u003e This kit is designed for Evinrude\/Johnson (OMC) outboard gear housings that use OMC part number 396355.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use 18-2659 when replacing a water pump impeller?\u003c\/strong\u003e Yes, since the kit includes the impeller housing gasket (18-0969) along with the oil seal (18-2059), it covers the seal and gasket needs of a typical lower unit water pump service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for this product?\u003c\/strong\u003e The Sierra 18-2659 Lower Unit Seal Kit has UPC 030999312709.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre the individual components in this kit available separately?\u003c\/strong\u003e Within the 18-2659 kit, the impeller housing gasket is Sierra part 18-0969 and the oil seal is Sierra part 18-2059, each corresponding to its own O.E. Number (319586 and 321466 respectively).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill 18-2659 fit a gear housing that lists O.E. Number 319586 or 321466?\u003c\/strong\u003e Yes, those are the O.E. Numbers for the two components inside the 18-2659 kit, the impeller housing gasket (319586) and the oil seal (321466).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many oil seals and gaskets come in one kit?\u003c\/strong\u003e One kit of Sierra 18-2659 contains one impeller housing gasket and one oil seal, quantity one each.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988108587227,"sku":"SIE-18-2659","price":57.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2659_lg__09234.1558124907.500.750.jpg?v=1785188138"},{"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"},{"product_id":"sierra-18-2654-lower-unit-seal-kit-replaces-mercury-26-79831a1-fits-mercury-mariner-70-75-80-90-hp-outboard-gearcase","title":"Sierra 18-2654 Lower Unit Seal Kit, Replaces 26-79831A1, for Mercury\/Mariner Outboard Motors","description":"\u003cp\u003eThe Sierra 18-2654 Lower Unit Seal Kit is a gearcase seal kit built to restore the watertight and oil-tight seal in the lower unit of Mercury and Mariner outboard motors. Lower unit seals wear over time and are a common source of gear lube leaks or water intrusion into the gearcase, both of which can lead to costly gearcase damage if left unaddressed. This kit supplies the key oil seal needed to reseal the lower unit during a rebuild or preventive maintenance service.\u003c\/p\u003e\u003cp\u003eThe kit is built around a round, white rubber seal component, engineered by Sierra to meet or exceed the fit and performance of the original equipment part it replaces. Sierra manufactures replacement marine parts to the same demands as high-horsepower engines see in the field, and supplies OEM engine manufacturers and boat builders with parts daily, so the 18-2654 kit is built to the same standard buyers expect from an original Mercury\/Mariner component.\u003c\/p\u003e\u003cp\u003eKit contents include the part number 18-2008 oil seal (O.E.# 26-56788, qty 1), the core sealing component of this lower unit kit. This kit replaces OEM part number 26-79831A1, so it is a direct fit for outboards originally fitted with that seal.\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 18-2654\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercury Outboard Gearcase Seal Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Rubber\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\u003eWeight:\u003c\/strong\u003e 0.12 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999312655\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e 18-2008 Oil Seal (O.E.# 26-56788), Qty 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury and Mariner outboard motors\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e26-79831A1\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2654 Lower Unit Seal Kit fit?\u003c\/strong\u003e The 18-2654 kit is designed for Mercury and Mariner outboard motors, replacing the OEM lower unit seal on those units.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the 18-2654 replace?\u003c\/strong\u003e Sierra part 18-2654 replaces OEM part number 26-79831A1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the 18-2654 kit?\u003c\/strong\u003e The kit contains one 18-2008 oil seal, which corresponds to O.E. Part number 26-56788, quantity one.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the seal made from?\u003c\/strong\u003e The seal in the Sierra 18-2654 kit is made of rubber, formed in a round shape.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-2654 seal kit?\u003c\/strong\u003e The 18-2654 lower unit seal is white in color.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2654 seal kit weigh?\u003c\/strong\u003e The Sierra 18-2654 Lower Unit Seal Kit weighs 0.12 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2654 a genuine Mercury part or aftermarket?\u003c\/strong\u003e The 18-2654 is a Sierra-brand aftermarket replacement, engineered to meet or exceed the performance of the original OEM part it replaces (26-79831A1), not a Mercury-branded original part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen would I need to replace the lower unit seal with kit 18-2654?\u003c\/strong\u003e This kit is used when the lower unit seal on a Mercury or Mariner outboard is worn or leaking, allowing gear lube to escape or water to enter the gearcase.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2654 kit?\u003c\/strong\u003e The UPC for the Sierra 18-2654 Lower Unit Seal Kit is 030999312655.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes Sierra manufacture this seal kit to OEM engine manufacturer standards?\u003c\/strong\u003e Yes, Sierra supplies parts to OEM engine manufacturers and boat builders, and the 18-2654 kit is built to meet or exceed the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the 18-2654 kit for other outboard brands besides Mercury and Mariner?\u003c\/strong\u003e The Sierra 18-2654 Lower Unit Seal Kit is specified for Mercury and Mariner outboard motors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the shape of the seal in kit 18-2654?\u003c\/strong\u003e The oil seal included in the Sierra 18-2654 kit is round in shape.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988108652763,"sku":"SIE-18-2654","price":71.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2654_lg__56113.1722346545.500.750.jpg?v=1785187970"},{"product_id":"sierra-18-2673-upper-unit-seal-kit-replaces-omc-984459-fits-all-omc-cobra-sterndrive-1986-1989","title":"Sierra 18-2673 Upper Unit Seal Kit, Replaces 984459 986364 987603, for All Cobra (1986-89) OMC Sterndrive","description":"\u003cp\u003eThe Sierra 18-2673 Upper Unit Seal Kit is a seal set engineered for the upper gearcase unit on All Cobra (1986-89) OMC sterndrive applications. It is built to replace the OEM upper unit seals that wear out over time from heat, vibration, and constant exposure to water and gear lubricant, restoring a proper seal against water intrusion and lubricant loss in the upper drive unit. This kit is a direct cross-reference for OMC OEM part numbers 984459, 986364, and 987603, so it installs as a like-for-like replacement without modification to the drive unit.\u003c\/p\u003e\u003cp\u003eThis is a seal kit specifically for the upper unit of the sterndrive, distinct from the companion 18-2674 Transom Mount Seal Kit, which is a separate part number covering a different section of the drive. Ordering the correct kit for the section of the drive being serviced ensures the right seals are on hand for the job. The kit weighs 0.24 pounds as packaged.\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 18-2673\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Upper Unit Seal Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e OMC Bellows and Transom Seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.24 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282258023\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces (OEM):\u003c\/strong\u003e 984459, 986364, 987603\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e All Cobra (1986-89)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eAll Cobra (1986-89) OMC Sterndrive\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e984459\u003c\/li\u003e\n\u003cli\u003e986364\u003c\/li\u003e\n\u003cli\u003e987603\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2673 Upper Unit Seal Kit fit?\u003c\/strong\u003e The Sierra 18-2673 Upper Unit Seal Kit fits All Cobra (1986-89) OMC sterndrive applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich OEM part numbers does the 18-2673 replace?\u003c\/strong\u003e Sierra 18-2673 replaces OMC OEM part numbers 984459, 986364, and 987603.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2673 seal kit weigh?\u003c\/strong\u003e The Sierra 18-2673 Upper Unit Seal Kit weighs 0.24 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2673 kit the same as the 18-2674 kit?\u003c\/strong\u003e No, 18-2673 is the Upper Unit Seal Kit while 18-2674 is the Transom Mount Seal Kit, a separate part number for a different section of the same Cobra sterndrive application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this kit work on any OMC sterndrive?\u003c\/strong\u003e The 18-2673 kit is designated for All Cobra (1986-89) applications; it is not listed as fitting other OMC sterndrive models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-2673 a genuine OEM part or aftermarket?\u003c\/strong\u003e Sierra 18-2673 is a Sierra-branded replacement part manufactured as a cross-reference equivalent to OMC OEM numbers 984459, 986364, and 987603.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat section of the drive does the 18-2673 kit service?\u003c\/strong\u003e The 18-2673 kit contains seals for the upper unit (upper gearcase) of the Cobra sterndrive, as opposed to the transom mount section covered by 18-2674.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy would I need to replace these seals?\u003c\/strong\u003e Upper unit seals in the Cobra sterndrive wear from heat, vibration, and constant exposure to water and gear lubricant, and the 18-2673 kit provides the replacement seals needed to restore a proper seal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I order 18-2673 by its UPC code?\u003c\/strong\u003e Yes, the Sierra 18-2673 Upper Unit Seal Kit carries UPC 808282258023.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2673 kit include installation instructions?\u003c\/strong\u003e The dossier for the 18-2673 Upper Unit Seal Kit does not specify included instructions; it is sold as the seal kit itself.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988108685531,"sku":"SIE-18-2673","price":56.59,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2673_lg__57195.1558122790.500.750.jpg?v=1785188004"},{"product_id":"sierra-18-2681-lower-unit-seal-kit-for-johnson-evinrude-outboards-replaces-glm-87617","title":"Sierra 18-2681 Lower Unit Seal Kit for Johnson\/Evinrude Outboard Motors, Replaces GLM 87617","description":"\u003cp\u003eThe Sierra 18-2681 Lower Unit Seal Kit is a complete gear housing seal kit built for Johnson and Evinrude outboard motors. It is assembled in Sierra's Illinois factory to OEM-quality standards, so every seal is engineered for the specific application it is designed to fit rather than sold as a generic, one-size-fits-all part. This kit gives outboard owners and marine technicians the seals needed to rebuild or service the lower unit gear housing, restoring the water-tight and oil-tight barriers that keep gear lube in and water out during operation.\u003c\/p\u003e\u003cp\u003eBecause lower unit seals are wear items subject to constant exposure to gear oil, water pressure, and heat, replacing them as a set during a lower unit rebuild or gearcase service helps prevent water intrusion and gear lube contamination, which are common causes of lower unit failure. The kit is packaged as a single unit count, ready to install as part of a routine lower unit service or repair.\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 18-2681\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\u003eFits:\u003c\/strong\u003e Johnson\/Evinrude Outboard Motor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces:\u003c\/strong\u003e GLM 87617\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\u003eWeight:\u003c\/strong\u003e 0.09 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999562807\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN:\u003c\/strong\u003e 00030999562807\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eThis seal kit is designed for Johnson\/Evinrude outboard motors.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cp\u003eGLM 87617\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2681 Lower Unit Seal Kit include?\u003c\/strong\u003e It includes the seals needed to rebuild the gear housing of a Johnson\/Evinrude outboard lower unit, packaged as a single kit with a unit count of one.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich outboard motors is the 18-2681 seal kit designed for?\u003c\/strong\u003e The 18-2681 kit is designed to fit Johnson\/Evinrude outboard motors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-2681 replace GLM 87617?\u003c\/strong\u003e Yes, the Sierra 18-2681 lower unit seal kit is a direct replacement for GLM 87617.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2681 seal kit weigh?\u003c\/strong\u003e The Sierra 18-2681 Lower Unit Seal Kit weighs 0.09 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this an OEM Sierra part or an aftermarket copy?\u003c\/strong\u003e The 18-2681 is a genuine Sierra part, assembled in Sierra's Illinois factory to OEM-quality standards rather than being a generic aftermarket copy.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color are the seals in this kit?\u003c\/strong\u003e The seals in the Sierra 18-2681 kit are white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen would I need to install this seal kit?\u003c\/strong\u003e This kit is used when rebuilding or servicing the gear housing of a Johnson\/Evinrude outboard lower unit, typically during a scheduled lower unit rebuild or after a water-intrusion issue.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat shape are the seals in the 18-2681 kit?\u003c\/strong\u003e The seals included in the Sierra 18-2681 kit are round.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy replace lower unit seals as a full kit instead of individually?\u003c\/strong\u003e Replacing all the seals together, as in the Sierra 18-2681 kit, ensures the entire gear housing is resealed at once, which helps prevent water intrusion and gear lube contamination that can occur if only one worn seal is replaced.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2681 seal kit?\u003c\/strong\u003e The UPC for the Sierra 18-2681 Lower Unit Seal Kit is 030999562807.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many seal kits come in one package?\u003c\/strong\u003e One Sierra 18-2681 Lower Unit Seal Kit is included per unit, with a unit count of 1.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988108718299,"sku":"SIE-18-2681","price":46.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2681_lg__68008.1558123017.500.750.jpg?v=1785189151"},{"product_id":"sierra-18-2672-lower-unit-seal-kit-replaces-omc-984458-985613-439967-fits-v6-v8-omc-cobra-sterndrive-1986-1991","title":"Sierra Lower Unit Seal Kit 18-2672, Replaces OMC 439967\/984458\/985613, for V6\/V8 Cobra Stern Drive (1986-1991)","description":"\u003cp\u003eThe Sierra 18-2672 Lower Unit Seal Kit is a complete set of replacement seals for the lower unit of OMC V6\/V8 Cobra stern drives from the 1986-1991 model years. It is built to restore the watertight, oil-tight seal between the lower unit housing and internal shift components, a common maintenance point when a drive shows signs of gear lube seepage, water intrusion, or shift linkage wear at the lower unit interface. The kit is a direct cross-reference for OMC part numbers 439967, 984458, and 985613, so it fits in place of the original equipment components without modification.\u003c\/p\u003e\u003cp\u003eInside the kit you get a shift cover gasket, two grommets, and a wiper, each matched to its corresponding OMC original equipment number so a technician or DIY boater can complete a full lower unit reseal in one job rather than sourcing individual seals separately. The kit is compatible with OMC Cobra stern drive models SF-20, SF-25, SF-30, SF-35, SF-42, SF-20F, SF-25F, SF-30F, SF-35F, and SF-42F. At 0.19 pounds, it ships as a compact small-parts kit intended for use during routine lower unit service or gear lube changes on applicable Cobra stern drives.\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 18-2672\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\u003eFitment:\u003c\/strong\u003e All V6\/V8 Cobra (1986-1991)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Models:\u003c\/strong\u003e SF-20, SF-25, SF-30, SF-35, SF-42, SF-20F, SF-25F, SF-30F, SF-35F, SF-42F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e Shift Cover Gasket (OEM 911878, Qty 1), Grommet (OEM 911705, Qty 2), Wiper (OEM 912157, Qty 1)\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\u003eUPC:\u003c\/strong\u003e 030999312839\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eAll V6\/V8 Cobra (1986-1991)\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e439967\u003c\/li\u003e\n\u003cli\u003e984458\u003c\/li\u003e\n\u003cli\u003e985613\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2672 lower unit seal kit fit?\u003c\/strong\u003e The 18-2672 kit is built for all V6\/V8 Cobra stern drives from the 1986-1991 model years, including the SF-20, SF-25, SF-30, SF-35, SF-42, SF-20F, SF-25F, SF-30F, SF-35F, and SF-42F models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich OEM part numbers does 18-2672 replace?\u003c\/strong\u003e Sierra 18-2672 cross-references to OMC part numbers 439967, 984458, and 985613, so it installs in place of any of those original equipment numbers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the 18-2672 seal kit?\u003c\/strong\u003e The kit contains one shift cover gasket (OEM 911878), two grommets (OEM 911705), and one wiper (OEM 912157), covering the seal points typically serviced together on a Cobra lower unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2672 lower unit seal kit weigh?\u003c\/strong\u003e The Sierra 18-2672 kit weighs 0.19 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color are the components in the 18-2672 kit?\u003c\/strong\u003e The seal kit components in Sierra 18-2672 are white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-2672 a genuine OMC part or an aftermarket replacement?\u003c\/strong\u003e 18-2672 is a Sierra-manufactured replacement kit, not an original OMC part, but it is a direct equivalent to OMC 439967, 984458, and 985613 and is designed to fit the same applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes 18-2672 fit 4-cylinder Cobra drives?\u003c\/strong\u003e No, the 18-2672 kit is designated for V6\/V8 Cobra stern drives (1986-1991); a 4-cylinder Cobra seal kit is a separate part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use 18-2672 to fix gear lube leaks at the lower unit?\u003c\/strong\u003e Yes, the shift cover gasket, grommets, and wiper in the Sierra 18-2672 kit are the seal points commonly responsible for gear lube seepage at the lower unit on applicable V6\/V8 Cobra drives.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many grommets come in the Sierra 18-2672 kit?\u003c\/strong\u003e Two grommets (OEM 911705) are included in the 18-2672 lower unit seal kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs professional installation required for the 18-2672 seal kit?\u003c\/strong\u003e The kit supplies the gasket, grommets, and wiper for a lower unit reseal on V6\/V8 Cobra stern drives; installation follows standard lower unit disassembly and is commonly performed by a marine technician or an experienced DIY boater.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988108751067,"sku":"SIE-18-2672","price":70.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2672_lg__70066.1558122714.500.750.jpg?v=1785188870"},{"product_id":"lower-unit-seal-kit-for-evinrude-johnson-omc-outboards-replaces-omc-330137-303345-327031-sierra-18-2679","title":"Sierra Lower Unit Seal Kit 18-2679, Replaces 303345 and 327031","description":"\u003cp\u003eThe Sierra 18-2679 Lower Unit Seal Kit is a two-piece oil seal set for the lower unit gear housing on Evinrude outboard motors. The kit bundles two oil seals so both sealing points in the gear housing are replaced together during a single service job, helping prevent gear lube leaks and water intrusion that can lead to costly gear housing damage.\u003c\/p\u003e\u003cp\u003eEach seal in this kit corresponds to a specific position in the gear housing: one seal (Sierra 18-2022) replaces the original equipment 303345 seal, and the second seal (Sierra 18-2035) replaces the original equipment 327031 seal. Sourcing both seals as a matched kit under a single Sierra part number simplifies ordering for a complete lower unit reseal rather than tracking down each seal individually.\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 18-2679\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\u003eKit Contents:\u003c\/strong\u003e 2 oil seals (Sierra 18-2022 and Sierra 18-2035)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Evinrude Outboard Gear Housing Seal Kits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.1 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999562784\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for Evinrude outboard gear housings using the 303345 and 327031 original equipment oil seals.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e303345\u003c\/li\u003e\n\u003cli\u003e327031\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2679 Lower Unit Seal Kit include?\u003c\/strong\u003e The kit includes two oil seals: Sierra part 18-2022, which replaces original equipment number 303345, and Sierra part 18-2035, which replaces original equipment number 327031.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-2679 a direct replacement for OEM seals 303345 and 327031?\u003c\/strong\u003e Yes, the Sierra 18-2679 kit is built to replace original equipment oil seals 303345 and 327031 in the gear housing lower unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-2679 seal kit weigh?\u003c\/strong\u003e The Sierra 18-2679 Lower Unit Seal Kit weighs 0.1 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat category of outboard does this seal kit belong to?\u003c\/strong\u003e The 18-2679 kit is listed under Evinrude Outboard Gear Housing Seal Kits.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many seals come in the 18-2679 kit?\u003c\/strong\u003e Two oil seals are included in the 18-2679 kit, one qty each of 18-2022 and 18-2035.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the individual seals in kit 18-2679 be purchased separately?\u003c\/strong\u003e The two seals that make up the 18-2679 kit have their own Sierra part numbers, 18-2022 and 18-2035, though this listing is for the combined two-seal kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra Lower Unit Seal Kit 18-2679?\u003c\/strong\u003e The UPC for the Sierra 18-2679 Lower Unit Seal Kit is 030999562784.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy would I replace both seals at once with kit 18-2679 instead of one at a time?\u003c\/strong\u003e Replacing both gear housing oil seals together with the 18-2679 kit addresses both sealing points in the same service, reducing the chance of a leak developing at the seal left untouched.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2679 kit include gaskets or just seals?\u003c\/strong\u003e The 18-2679 kit contains oil seals only, specifically the two seals corresponding to OEM numbers 303345 and 327031.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM numbers cross-reference to the Sierra 18-2679 kit?\u003c\/strong\u003e The Sierra 18-2679 Lower Unit Seal Kit cross-references to OEM numbers 303345 and 327031.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988108783835,"sku":"SIE-18-2679","price":35.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2679_lg__40455.1558122918.500.750.jpg?v=1785329168"},{"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"},{"product_id":"sierra-18-2682-lower-unit-seal-kit-for-evinrude-outboard-gear-housing-replaces-glm-87605-mpn-118-2682","title":"Sierra 18-2682 Lower Unit Seal Kit for Evinrude Outboard Gear Housings, White","description":"\u003cp\u003eThe Sierra 18-2682 Lower Unit Seal Kit provides the seals and gasket needed to properly rebuild the gear housing on Evinrude outboard motors. This kit is engineered to meet or exceed original equipment quality, and each component is precision fit to restore a proper seal against water intrusion and lubricant loss in the gear case.\u003c\/p\u003e\u003cp\u003eThe kit includes two Sierra 18-2022 oil seals (O.E. 303345) and one Sierra 18-2891 bearing housing gasket (O.E. 303339), giving you the complete set of sealing components needed for a gear housing rebuild in a single package rather than sourcing each part separately. The kit is finished in white and packaged as a ready-to-install set for the 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 18-2682\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\u003eWeight:\u003c\/strong\u003e 0.11 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1 kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Oil Seals:\u003c\/strong\u003e 2 x Sierra 18-2022 (O.E. 303345)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Bearing Housing Gasket:\u003c\/strong\u003e 1 x Sierra 18-2891 (O.E. 303339)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999562814\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eEvinrude outboard gear housings\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGLM 87605\u003c\/li\u003e\n\u003cli\u003eO.E. 303345\u003c\/li\u003e\n\u003cli\u003eO.E. 303339\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2682 Lower Unit Seal Kit include?\u003c\/strong\u003e The kit includes two Sierra 18-2022 oil seals (O.E. 303345) and one Sierra 18-2891 bearing housing gasket (O.E. 303339), giving you all the sealing components for one gear housing rebuild.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat outboards does the 18-2682 seal kit fit?\u003c\/strong\u003e The 18-2682 kit is designed for Evinrude outboard gear housings.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2682 interchangeable with any other part numbers?\u003c\/strong\u003e Yes, the 18-2682 kit is interchangeable with GLM 87605.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2682 seal kit weigh?\u003c\/strong\u003e The Sierra 18-2682 Lower Unit Seal Kit weighs 0.11 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-2682 kit?\u003c\/strong\u003e The 18-2682 Lower Unit Seal Kit is white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this an OEM part or an aftermarket replacement?\u003c\/strong\u003e The Sierra 18-2682 is an aftermarket kit built to meet or exceed original equipment quality and is engineered as a precise fit, form, and function replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many oil seals come in the 18-2682 kit?\u003c\/strong\u003e Two oil seals (Sierra 18-2022, O.E. 303345) are included in the 18-2682 kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2682 kit include a bearing housing gasket?\u003c\/strong\u003e Yes, one Sierra 18-2891 bearing housing gasket (O.E. 303339) is included with the 18-2682 kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2682 Lower Unit Seal Kit?\u003c\/strong\u003e The UPC for the Sierra 18-2682 kit is 030999562814.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I buy the individual seals in the 18-2682 kit separately?\u003c\/strong\u003e The 18-2682 kit bundles the individual components, listed under Sierra part numbers 18-2022 (oil seal, qty 2) and 18-2891 (bearing housing gasket, qty 1).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is the Sierra 18-2682 seal kit manufactured?\u003c\/strong\u003e Sierra lower unit seal kits, including the 18-2682, are assembled in Sierra's Illinois factory.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988108882139,"sku":"SIE-18-2682","price":48.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2682_lg__76631.1558123062.500.750.jpg?v=1785188967"},{"product_id":"sierra-18-2685-lower-unit-seal-kit-for-johnson-evinrude-outboard-replaces-oe-309044-321786-321787","title":"Sierra 18-2685 Lower Unit Seal Kit (OE 321786, 321787) for Johnson\/Evinrude Outboard Motors","description":"\u003cp\u003eThe Sierra 18-2685 Lower Unit Seal Kit is a gear housing seal kit built for Johnson\/Evinrude outboard motors. It is designed to restore a watertight, oil-tight seal in the lower unit, preventing water intrusion into the gear case and stopping gear lubricant from leaking out, both of which protect the gear set and bearings from corrosion and premature wear. Sierra engineers its seals and gaskets to meet or exceed the specifications of the original equipment parts they replace, so the kit installs and seals the same way as the factory components it is intended to service.\u003c\/p\u003e\u003cp\u003eThe kit bundles multiple oil seals so a technician can address the lower unit sealing points in a single job rather than sourcing each seal individually. Included are three of the 18-2030 oil seal (OE equivalent 321786) and one 18-2031 oil seal (OE equivalent 321787), along with component 18-4248. Buyers researching parts for their outboard's gear housing can cross-reference this kit directly by its included OE seal numbers.\u003c\/p\u003e\u003cp\u003eSierra 18-2685 is intended for Johnson\/Evinrude outboard motors. As with any lower unit seal replacement, seals should be installed with attention to correct orientation and lip lubrication to achieve a proper seal.\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 18-2685\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Category:\u003c\/strong\u003e Lower Unit Seal Kit (Evinrude Outboard Gear Housing Seal Kit)\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\u003eWeight:\u003c\/strong\u003e 0.13 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999562845\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e 18-2030 Oil Seal (OE 321786), Qty 3; 18-2031 Oil Seal (OE 321787), Qty 1; component 18-4248\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Johnson\/Evinrude outboard motors\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJohnson\/Evinrude outboard motors\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e321786\u003c\/li\u003e\n\u003cli\u003e321787\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-2685 kit used for?\u003c\/strong\u003e It is a lower unit seal kit that reseals the gear housing on Johnson\/Evinrude outboard motors, keeping water out of the gear case and gear lubricant in.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich outboard motors does the 18-2685 seal kit fit?\u003c\/strong\u003e The Sierra 18-2685 is built for Johnson\/Evinrude outboard motors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat seals come in the Sierra 18-2685 kit?\u003c\/strong\u003e The kit includes three of the 18-2030 oil seal (OE equivalent 321786), one 18-2031 oil seal (OE equivalent 321787), and component 18-4248.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM numbers does the Sierra 18-2685 kit cross-reference to?\u003c\/strong\u003e The oil seals in kit 18-2685 correspond to OEM numbers 321786 and 321787.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many oil seals are included in the 18-2685 kit?\u003c\/strong\u003e Four oil seals total: three of the 18-2030 (OE 321786) and one 18-2031 (OE 321787), plus the 18-4248 component.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-2685 seal kit weigh?\u003c\/strong\u003e The kit weighs 0.13 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-2685 seal kit?\u003c\/strong\u003e The seals in this kit are white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2685 an OEM part or aftermarket?\u003c\/strong\u003e 18-2685 is a Sierra aftermarket kit engineered to meet or exceed the specifications of the original Johnson\/Evinrude equipment it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-2685 kit include gaskets or just seals?\u003c\/strong\u003e This kit is a set of oil seals (18-2030 and 18-2031) plus the 18-4248 component, not a gasket set.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2685 lower unit seal kit?\u003c\/strong\u003e The UPC for the Sierra 18-2685 kit is 030999562845.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre there aftermarket alternatives to the Sierra 18-2685 kit?\u003c\/strong\u003e Yes, the same seal set is cross-listed as interchangeable with Mallory 9-74115 and GLM 87619.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988108980443,"sku":"SIE-18-2685","price":53.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2685_lg__37060.1558123238.500.750.jpg?v=1785187970"},{"product_id":"sierra-18-2684-lower-unit-seal-kit-for-evinrude-johnson-outboards-replaces-omc-304764-321788-309044","title":"Sierra Lower Unit Seal Kit 18-2684 - Evinrude Outboard Gear Housing Shift Rod Gasket, Oil Seal and Spaghetti Seal","description":"\u003cp\u003eThe Sierra Lower Unit Seal Kit 18-2684 is a complete reseal kit for Evinrude outboard gear housings (lower units), bundling the three seals most commonly needed together in one part number. The kit contains a shift rod gasket, an oil seal, and a spaghetti seal, each engineered to the same fit, form, and function as the original equipment part it replaces. Rather than sourcing three separate seals individually and risking a mismatch, installers can order this single kit number and have everything needed for a lower unit reseal in one box.\u003c\/p\u003e\u003cp\u003eEach component in the kit corresponds to a specific original equipment part: the shift rod gasket (Sierra 18-0882) replaces OEM 304764, the oil seal (Sierra 18-2032) replaces OEM 321788, and the spaghetti seal (Sierra 18-4248) replaces OEM 309044. Sierra also cross-references this kit to Mallory 9-74105 and GLM 87606 for buyers searching under those numbers. The kit is intended for gear housing service where the shift rod seal, propeller shaft oil seal, and housing spaghetti seal are being replaced as part of a lower unit rebuild or leak repair.\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 18-2684\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e Shift Rod Gasket (18-0882), Oil Seal (18-2032), Spaghetti Seal (18-4248)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Component OEM Numbers:\u003c\/strong\u003e 304764, 321788, 309044\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.14 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Evinrude outboard gear housing (lower unit)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Form:\u003c\/strong\u003e Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Pieces:\u003c\/strong\u003e 3\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for Evinrude outboard gear housing (lower unit) applications.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMallory 9-74105\u003c\/li\u003e\n\u003cli\u003eGLM 87606\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2684 lower unit seal kit include?\u003c\/strong\u003e The kit contains three seals for an Evinrude outboard gear housing: a shift rod gasket (Sierra 18-0882), an oil seal (Sierra 18-2032), and a spaghetti seal (Sierra 18-4248).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does this kit cross-reference to?\u003c\/strong\u003e The individual seals in kit 18-2684 correspond to original equipment numbers 304764 (shift rod gasket), 321788 (oil seal), and 309044 (spaghetti seal), and the kit as a whole is also referenced to Mallory 9-74105 and GLM 87606.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2684 kit made to OEM specifications?\u003c\/strong\u003e Yes, each seal in the 18-2684 kit is engineered to match the fit, form, and function of the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2684 seal kit weigh?\u003c\/strong\u003e The Sierra Lower Unit Seal Kit 18-2684 weighs 0.14 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-2684 seal kit packaging?\u003c\/strong\u003e The kit measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is a spaghetti seal used for in this kit?\u003c\/strong\u003e The spaghetti seal included in kit 18-2684 (Sierra 18-4248, replacing OEM 309044) seals the gear housing during lower unit assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this kit include a shift rod gasket?\u003c\/strong\u003e Yes, kit 18-2684 includes a shift rod gasket, Sierra part 18-0882, which replaces OEM number 304764.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat application is the 18-2684 seal kit designed for?\u003c\/strong\u003e This kit is designed for Evinrude outboard gear housing (lower unit) service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I buy the individual seals separately instead of the kit?\u003c\/strong\u003e The shift rod gasket, oil seal, and spaghetti seal are sold together under Sierra kit number 18-2684, which bundles all three components needed for a gear housing reseal into one part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many pieces come in the Sierra 18-2684 kit?\u003c\/strong\u003e The 18-2684 kit contains 3 seal components: a shift rod gasket, an oil seal, and a spaghetti seal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2684 kit backed by a warranty?\u003c\/strong\u003e Yes, the Sierra 18-2684 lower unit seal kit is backed by Sierra's warranty.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988109013211,"sku":"SIE-18-2684","price":28.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2684_lg__65831.1558123183.500.750.jpg?v=1785188012"},{"product_id":"sierra-18-2686-lower-unit-seal-kit-for-johnson-evinrude-outboards-replaces-oe-313284-304764","title":"Sierra 18-2686 Lower Unit Seal Kit for Johnson\/Evinrude Outboard Motors, Replaces OEM 304764 and 313284","description":"\u003cp\u003eThe Sierra 18-2686 Lower Unit Seal Kit is a gear housing seal kit built for Johnson\/Evinrude outboard motors. It bundles the shift rod gasket and oil seal needed to reseal the lower unit and restore a proper barrier against water intrusion and gear lube leakage during a gear case service or rebuild. Each component is engineered as a direct, precise-fit replacement so the kit installs the same way as the original hardware it replaces.\u003c\/p\u003e\u003cp\u003eThe kit includes a shift rod gasket that seals around the shift rod bore where it passes through the gear housing, plus an oil seal that keeps gear lubricant contained within the lower unit while blocking water from entering. Both parts are cross-referenced to their original equipment numbers so you can confirm you are ordering the correct replacement for your lower unit rebuild.\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 18-2686\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\u003eApplication:\u003c\/strong\u003e Johnson\/Evinrude Outboard Motor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e Shift Rod Gasket (Sierra 18-0882), Oil Seal (Sierra 18-2005)\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 030999562852\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.11 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJohnson\/Evinrude outboard motors using this lower unit seal configuration; confirm your engine's part numbers before ordering, as fit is application specific.\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e304764\u003c\/li\u003e\n\u003cli\u003e313284\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2686 Lower Unit Seal Kit include?\u003c\/strong\u003e The kit includes a shift rod gasket (Sierra 18-0882) and an oil seal (Sierra 18-2005) for resealing the lower unit gear housing on a Johnson\/Evinrude outboard motor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich OEM part numbers does this kit replace?\u003c\/strong\u003e Sierra 18-2686 replaces OEM numbers 304764 and 313284, corresponding to the shift rod gasket and oil seal in the kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2686 kit OEM quality?\u003c\/strong\u003e Yes, Sierra lower unit seal kits like the 18-2686 are engineered and manufactured to meet or exceed original equipment quality and fit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2686 seal kit weigh?\u003c\/strong\u003e The Sierra 18-2686 Lower Unit Seal Kit weighs 0.11 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engines is the 18-2686 seal kit designed for?\u003c\/strong\u003e This kit is designed for Johnson\/Evinrude outboard motors; confirm your engine's specific part numbers to ensure proper fit before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the shift rod gasket's OEM equivalent number?\u003c\/strong\u003e The shift rod gasket included in kit 18-2686 (Sierra 18-0882) is the equivalent of OEM number 304764.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the oil seal's OEM equivalent number?\u003c\/strong\u003e The oil seal included in kit 18-2686 (Sierra 18-2005) is the equivalent of OEM number 313284.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen would I need the 18-2686 lower unit seal kit?\u003c\/strong\u003e This kit is used when servicing or rebuilding the lower unit gear housing on a Johnson\/Evinrude outboard, replacing the shift rod gasket and oil seal to stop leaks and keep water out of the gear case.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color and shape is the oil seal in this kit?\u003c\/strong\u003e The oil seal in the Sierra 18-2686 kit is white and round in shape.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2686 kit come with installation instructions?\u003c\/strong\u003e The kit ships as the seal components themselves (shift rod gasket and oil seal) for installation during a standard lower unit reseal or rebuild procedure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2686 seal kit?\u003c\/strong\u003e The UPC for the Sierra 18-2686 Lower Unit Seal Kit is 030999562852.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988109045979,"sku":"SIE-18-2686","price":26.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2686_lg__47684.1558123309.500.750.jpg?v=1785188130"},{"product_id":"sierra-18-2692-lower-unit-seal-kit-for-johnson-evinrude-85-115-hp-v-4-outboard-replaces-oem-321453-324670","title":"Sierra 18-2692 Lower Unit Seal Kit for Johnson\/Evinrude 85-115 HP V-4 Outboards (1973-83)","description":"\u003cp\u003eThe Sierra 18-2692 Lower Unit Seal Kit supplies the gasket and oil seals needed to properly reseal the gear housing on select Johnson\/Evinrude outboards. The kit is built around two components: a shift housing gasket and a pair of oil seals, matched to the original equipment specifications of the lower unit they service. Using a complete seal kit rather than sourcing individual seals helps ensure the lower unit is fully resealed in one job, reducing the risk of water intrusion or gear lube leakage from a missed or mismatched component.\u003c\/p\u003e\u003cp\u003eThis kit is designed for Johnson\/Evinrude 85, 90, 100, 110, and 115 HP V-4 outboards built in the 1973-83 range. Each Sierra part is manufactured to meet or exceed the original equipment part it replaces, making the 18-2692 kit a straightforward like-for-like replacement when servicing the lower unit gear housing.\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 18-2692\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\u003eKit Contents:\u003c\/strong\u003e 1x Shift Housing Gasket (Sierra 18-0110), 2x Oil Seal (Sierra 18-2026)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.1 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999562913\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Evinrude Outboard Gear Housing Seal Kits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Johnson\/Evinrude 85, 90, 100, 110, 115 HP V-4 outboards, 1973-83\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eJohnson\/Evinrude 85 HP V-4, 1973-83\u003c\/li\u003e\n\u003cli\u003eJohnson\/Evinrude 90 HP V-4, 1973-83\u003c\/li\u003e\n\u003cli\u003eJohnson\/Evinrude 100 HP V-4, 1973-83\u003c\/li\u003e\n\u003cli\u003eJohnson\/Evinrude 110 HP V-4, 1973-83\u003c\/li\u003e\n\u003cli\u003eJohnson\/Evinrude 115 HP V-4, 1973-83\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e324670 (Shift Housing Gasket)\u003c\/li\u003e\n\u003cli\u003e321453 (Oil Seal)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2692 Lower Unit Seal Kit include?\u003c\/strong\u003e The kit contains one shift housing gasket (Sierra 18-0110, OE 324670) and two oil seals (Sierra 18-2026, OE 321453), covering the seals needed for a lower unit gear housing resealing job.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich outboards does the 18-2692 seal kit fit?\u003c\/strong\u003e This kit fits Johnson\/Evinrude 85, 90, 100, 110, and 115 HP V-4 outboards built in the 1973-83 range.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2692 kit include the oil seals and gasket together, or are they sold separately?\u003c\/strong\u003e Everything is included in one package: the shift housing gasket and both oil seals ship together under part number 18-2692, so no separate purchases are needed for those components.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-2692 kit replace?\u003c\/strong\u003e The kit replaces OEM shift housing gasket 324670 and OEM oil seal 321453.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many oil seals come in the Sierra 18-2692 kit?\u003c\/strong\u003e Two oil seals (Sierra 18-2026) are included in the 18-2692 kit, along with one shift housing gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2692 a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e 18-2692 is a Sierra-manufactured replacement kit, made to meet or exceed the specifications of the original equipment gasket and seals it replaces rather than being a Johnson\/Evinrude branded OEM part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2692 seal kit weigh?\u003c\/strong\u003e The Sierra 18-2692 Lower Unit Seal Kit weighs 0.1 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-2692 kit work on a Johnson\/Evinrude 90 HP V-4 from other years outside 1973-83?\u003c\/strong\u003e Sierra lists the 18-2692 kit as fitting the Johnson\/Evinrude 90 HP V-4 for the 1973-83 model years; fitment outside that range is not specified.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between the shift housing gasket and the oil seals in this kit?\u003c\/strong\u003e The shift housing gasket (18-0110, OE 324670) seals the shift housing to prevent leaks at that joint, while the two oil seals (18-2026, OE 321453) seal rotating shafts in the lower unit gear housing to keep gear lube in and water out.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need any other parts to complete a lower unit reseal besides the 18-2692 kit?\u003c\/strong\u003e The 18-2692 kit supplies the shift housing gasket and oil seals for the gear housing; whether additional gaskets or seals are needed depends on the full scope of the lower unit being serviced.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988109078747,"sku":"SIE-18-2692","price":61.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2692_lg__80475.1558123689.500.750.jpg?v=1785188702"},{"product_id":"sierra-18-2698-clutch-housing-seal-kit-for-omc-80-120-hp-outboards-1965-1980-replaces-oem-315189","title":"Sierra Clutch Housing Seal Kit 18-2698, Interchangeable with GLM 87660, for OMC Outboards 170-200 HP","description":"\u003cp\u003eThe Sierra 18-2698 Clutch Housing Seal Kit is a complete gasket and O-ring set for servicing the clutch housing on OMC outboard motors. It is built to meet or exceed original equipment quality, giving a reliable seal at the clutch housing during a gearcase rebuild or routine maintenance. The kit bundles every small gasket, washer, and O-ring needed for the job into a single part number, so installers do not have to source each seal individually.\u003c\/p\u003e\u003cp\u003eInside the kit you get one 18-0939 upper gearcase dipstick gasket, one 18-2863 tilt clutch cover gasket, one 18-4248 drain plug washer, one 18-7114 O-ring, one 18-7400 O-ring, and one 18-7952 O-ring. Sierra 18-2698 is interchangeable with GLM 87660, making it a straightforward replacement for that part number as well as the original OMC clutch housing seals. The kit applies to OMC outboard motors across a range of horsepower ratings, including 170, 175, 185, and 190 HP models from the listed model years below.\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 18-2698\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Clutch Housing Seal Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e OMC Clutch Pack Seal Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.08 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282106096\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e (1) 18-0939 Upper Gearcase Dipstick Gasket, (1) 18-2863 Tilt Clutch Cover Gasket, (1) 18-4248 Drain Plug Washer, (1) 18-7114 O-Ring, (1) 18-7400 O-Ring, (1) 18-7952 O-Ring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange Number:\u003c\/strong\u003e GLM 87660\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOMC outboard, 170 HP, 1974\u003c\/li\u003e\n\u003cli\u003eOMC outboard, 175 HP, 1975-1977\u003c\/li\u003e\n\u003cli\u003eOMC outboard, 185 HP, 1967-1968\u003c\/li\u003e\n\u003cli\u003eOMC outboard, 185 HP, 1978\u003c\/li\u003e\n\u003cli\u003eOMC outboard, 190 HP, 1974-1977\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eGLM 87660\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2698 Clutch Housing Seal Kit include?\u003c\/strong\u003e The kit contains one 18-0939 upper gearcase dipstick gasket, one 18-2863 tilt clutch cover gasket, one 18-4248 drain plug washer, one 18-7114 O-ring, one 18-7400 O-ring, and one 18-7952 O-ring, all needed to reseal the clutch housing in a single package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs GLM 87660 the same as Sierra 18-2698?\u003c\/strong\u003e Yes, Sierra 18-2698 is interchangeable with GLM 87660, so it can be ordered as a direct replacement for that number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does this seal kit weigh?\u003c\/strong\u003e The Sierra 18-2698 Clutch Housing Seal Kit weighs 0.08 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color are the components in this kit?\u003c\/strong\u003e The components in the Sierra 18-2698 kit are white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich OMC outboard motors use the 18-2698 clutch housing seal kit?\u003c\/strong\u003e This kit fits OMC outboard motors including 170 HP (1974), 175 HP (1975-1977), 185 HP (1967-1968 and 1978), and 190 HP (1974-1977) models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-2698 an OEM or aftermarket part?\u003c\/strong\u003e It is an aftermarket kit manufactured by Sierra that is built to meet or exceed original equipment quality.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2698 kit include the drain plug washer?\u003c\/strong\u003e Yes, one 18-4248 drain plug washer is included along with the other gaskets and O-rings in the Sierra 18-2698 kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many O-rings come in the Sierra 18-2698 kit?\u003c\/strong\u003e Three O-rings are included: an 18-7114, an 18-7400, and an 18-7952.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the tilt clutch cover gasket part number in this kit?\u003c\/strong\u003e The tilt clutch cover gasket included in the Sierra 18-2698 kit is part number 18-2863.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the Sierra 18-2698 kit to service just the dipstick gasket?\u003c\/strong\u003e The 18-0939 upper gearcase dipstick gasket is included as part of the full Sierra 18-2698 kit, which is sold as a complete set rather than individual pieces.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988109177051,"sku":"SIE-18-2698","price":35.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2698_lg__11425.1558123892.500.750.jpg?v=1785189050"},{"product_id":"sierra-18-2694-lower-unit-seal-kit-for-johnson-evinrude-omc-brp-50-75-hp-3-cyl-1979-2003-replaces-0433550","title":"Sierra Gear Housing Seal Kit 18-2694, Replaces Evinrude\/Johnson 433550, Fits Johnson\/Evinrude 50-75 HP 3-Cylinder Outboard Gearcases 1979-2003","description":"\u003cp\u003eThe Sierra Gear Housing Seal Kit 18-2694 is a lower unit seal kit engineered to reseal the gearcase on Johnson\/Evinrude (OMC\/BRP) 50-75 HP 3-cylinder outboards built from 1979 to 2003. The kit gathers the seals needed for a gear housing rebuild into a single part number, replacing the Evinrude\/Johnson OEM number 433550, so a technician does not have to source individual seals separately when servicing the lower unit.\u003c\/p\u003e\u003cp\u003eSierra builds this kit to meet or exceed original equipment quality, with each seal engineered for a precise fit, form, and function against the gearcase housing it is designed to seal. It is intended for marine technicians and DIY boaters performing a gear housing rebuild, water pump service, or general lower unit maintenance on a compatible Johnson\/Evinrude outboard, where worn or hardened factory seals need to be replaced to keep gear lube contained and water out of the lower unit.\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 18-2694\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Gear Housing Seal Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces (OEM):\u003c\/strong\u003e 433550\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Johnson\/Evinrude (OMC\/BRP) outboards, 50-75 HP, 3 Cylinder, 1979-2003\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.16 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999752840\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJohnson\/Evinrude (OMC\/BRP) outboard gearcases, 50-75 HP, 3 Cylinder, 1979-2003\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e433550\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2694 gear housing seal kit fit?\u003c\/strong\u003e Sierra part 18-2694 is designed for Johnson\/Evinrude (OMC\/BRP) outboards rated 50-75 HP with a 3-cylinder engine, covering model years 1979 to 2003.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does 18-2694 replace?\u003c\/strong\u003e It replaces Evinrude\/Johnson OEM number 433550.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this kit made by the original outboard manufacturer?\u003c\/strong\u003e No, 18-2694 is a Sierra-branded aftermarket seal kit built to meet or exceed original equipment quality as a replacement for Evinrude\/Johnson part 433550, rather than a part produced by Johnson\/Evinrude itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2694 seal kit weigh?\u003c\/strong\u003e The kit weighs 0.16 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the Sierra 18-2694 kit?\u003c\/strong\u003e The kit includes one gear housing seal kit assembly (unit count of 1) containing the seals needed to reseal the gearcase on compatible Johnson\/Evinrude outboards.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color are the seals in kit 18-2694?\u003c\/strong\u003e The seals in the Sierra 18-2694 gear housing seal kit are white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use 18-2694 on a 4-cylinder Johnson\/Evinrude outboard?\u003c\/strong\u003e No, 18-2694 is specified for 3-cylinder Johnson\/Evinrude (OMC\/BRP) outboards in the 50-75 HP range; a different Sierra part number would be needed for other cylinder configurations.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen would I need to install this seal kit?\u003c\/strong\u003e This kit is used during a gear housing (lower unit) rebuild or when servicing the gearcase on a compatible Johnson\/Evinrude outboard, typically when old seals have hardened or are leaking gear lube or allowing water intrusion.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes 18-2694 cover model years outside 1979-2003?\u003c\/strong\u003e The listed coverage for Sierra 18-2694 is Johnson\/Evinrude 50-75 HP 3-cylinder outboards built from 1979 to 2003; years outside that range are not covered by this part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-2694 the same as the water pump repair kit for these outboards?\u003c\/strong\u003e No, 18-2694 is the gear housing seal kit; the water pump repair kit for the same outboard family is a separate Sierra part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2694 kit?\u003c\/strong\u003e The UPC for Sierra gear housing seal kit 18-2694 is 030999752840.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988109308123,"sku":"SIE-18-2694","price":39.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/img_d616b55f-4b16-4972-8767-0e618eafcd90.jpg?v=1785332815"},{"product_id":"check-valve-kit-oil-passage-replaces-mercruiser-24-17997a1-fits-mr-alpha-one-gear-housing","title":"Sierra Spring Kit 18-2715, Replaces 24-17997A1, Includes Face Seal and Tool","description":"\u003cp\u003eThe Sierra 18-2715 Spring Kit is a marine engine service kit built as a direct replacement for OEM part number 24-17997A1. The kit is supplied complete with the spring plus a face seal and installation tool, packaged together as part 18-2599, so the components needed for the service job are included in a single kit rather than sourced piecemeal. This bundling reduces the risk of missing a small but critical component during reassembly, since the face seal and its dedicated installation tool ship alongside the spring itself.\u003c\/p\u003e\u003cp\u003eSierra manufactures this kit to the OEM specification referenced by 24-17997A1, giving boat owners and marine technicians a Sierra-branded alternative to the original equipment part while maintaining compatibility with the systems that call for that OEM number. At 0.02 pounds, the kit is a lightweight, compact service item suited for routine maintenance or repair work where the spring and face seal need to be replaced together.\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 18-2715\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Spring Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContains:\u003c\/strong\u003e Face Seal and Tool (Sierra 18-2599)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.02 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999875259\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eNo make, horsepower, year, or model fitment data is specified for this kit.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e24-17997A1\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the Sierra 18-2715 Spring Kit?\u003c\/strong\u003e The Sierra 18-2715 Spring Kit includes the spring along with a face seal and installation tool, packaged together as component 18-2599.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the Sierra 18-2715 Spring Kit replace?\u003c\/strong\u003e The Sierra 18-2715 Spring Kit is a replacement for OEM part number 24-17997A1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-2715 Spring Kit weigh?\u003c\/strong\u003e The Sierra 18-2715 Spring Kit weighs 0.02 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-2715 kit come with an installation tool?\u003c\/strong\u003e Yes, an installation tool is included with the face seal as part of component 18-2599 within the Sierra 18-2715 Spring Kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2715 a genuine Sierra part?\u003c\/strong\u003e Yes, 18-2715 is a Sierra-branded Spring Kit manufactured as a replacement for OEM part 24-17997A1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC code for the Sierra 18-2715 Spring Kit?\u003c\/strong\u003e The UPC for the Sierra 18-2715 Spring Kit is 030999875259.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs a face seal included with the Sierra 18-2715 Spring Kit?\u003c\/strong\u003e Yes, a face seal is included as part of component 18-2599, bundled with the tool and spring in the Sierra 18-2715 kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is part 18-2599 that comes with the Sierra Spring Kit?\u003c\/strong\u003e Part 18-2599 is the Face Seal and Tool component contained within the Sierra 18-2715 Spring Kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-2715 kit fit a specific make or model?\u003c\/strong\u003e No specific make, horsepower, year, or model fitment is listed for the Sierra 18-2715 Spring Kit; it is identified by its OEM cross-reference to part 24-17997A1.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988109406427,"sku":"SIE-18-2715","price":7.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2715_lg__23525.1558122490.500.750.jpg?v=1785329183"},{"product_id":"sierra-18-2772-1-transom-seal-kit-for-omc-sx-cobra-volvo-sx-drives-with-cone-clutch-upc-808282224929","title":"Sierra 18-2772-1 Transom Seal Kit for OMC SX Cobra Drives with Cone Clutch and Volvo SX Drives","description":"\u003cp\u003eThe Sierra 18-2772-1 Transom Seal Kit is a complete resealing kit for the transom assembly on OMC SX Cobra Drives equipped with a cone clutch, and is also used on Volvo SX Drives. It bundles the gimbal bearing and bellows components needed to reseal the drive-to-transom connection, restoring the watertight barrier that keeps water out of the boat while allowing the drive to steer and tilt. Each component in the kit carries its own original equipment reference number, so it can be matched directly against the parts it is replacing during a rebuild.\u003c\/p\u003e\u003cp\u003eThe kit includes an 18-2100 gimbal bearing and an 18-2765 bellows, each cross-referenced to their original equipment numbers, along with an 18-1074 bellows. Sierra engineers its parts to meet or exceed the specifications of the original equipment they replace, making this kit suited for a full transom reseal rather than a single-component patch 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 18-2772-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Transom Seal Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.57 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e white\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282224929\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e 18-2100 Gimbal Bearing (O.E. 3853807, Qty 1); 18-2765 Bellows (O.E. 3854127, Qty 1); 18-1074 Bellows\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOMC SX Cobra Drives with cone clutch\u003c\/li\u003e\n\u003cli\u003eVolvo SX Drives\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e3853807\u003c\/li\u003e\n\u003cli\u003e3854127\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat drives does the Sierra 18-2772-1 Transom Seal Kit fit?\u003c\/strong\u003e The 18-2772-1 kit is for OMC SX Cobra Drives with a cone clutch, and it is also used on Volvo SX Drives.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the 18-2772-1 Transom Seal Kit?\u003c\/strong\u003e The kit contains an 18-2100 gimbal bearing (O.E. Number 3853807), an 18-2765 bellows (O.E. Number 3854127), and an 18-1074 bellows, one of each.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this kit include the gimbal bearing?\u003c\/strong\u003e Yes, the Sierra 18-2772-1 kit includes an 18-2100 gimbal bearing along with the bellows components needed for a transom reseal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM numbers does this kit cross-reference to?\u003c\/strong\u003e The gimbal bearing in the 18-2772-1 kit corresponds to O.E. Number 3853807, and the 18-2765 bellows corresponds to O.E. Number 3854127.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-2772-1 Transom Seal Kit weigh?\u003c\/strong\u003e The 18-2772-1 Transom Seal Kit weighs 1.57 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color are the components in this kit?\u003c\/strong\u003e The components in the Sierra 18-2772-1 Transom Seal Kit are white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this kit work on a cone clutch SX Cobra drive?\u003c\/strong\u003e Yes, the 18-2772-1 kit is specifically designed for OMC SX Cobra Drives with a cone clutch.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2772-1 kit genuine OEM or aftermarket?\u003c\/strong\u003e The 18-2772-1 is a Sierra aftermarket kit engineered to meet or exceed the specifications of the original equipment parts it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many bellows come in the 18-2772-1 kit?\u003c\/strong\u003e Two bellows are included in the Sierra 18-2772-1 kit: an 18-2765 bellows and an 18-1074 bellows.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-2772-1 Transom Seal Kit?\u003c\/strong\u003e The UPC for the Sierra 18-2772-1 Transom Seal Kit is 808282224929.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan this kit be used on a Volvo SX Drive?\u003c\/strong\u003e Yes, in addition to OMC SX Cobra Drives with a cone clutch, the 18-2772-1 kit is also used on Volvo SX Drives.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the part number for the gimbal bearing included in this kit?\u003c\/strong\u003e The gimbal bearing included in the 18-2772-1 kit is part number 18-2100, cross-referenced to O.E. Number 3853807.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988112814299,"sku":"SIE-18-2772-1","price":181.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2772-1_lg__61767.1558122597.500.750.jpg?v=1785188470"},{"product_id":"sierra-18-2791-gearcase-seal-kit-replaces-omc-volvo-penta-987251-fits-3-0l-4-3l-5-0l-5-7l-7-4l-8-2l-sterndrives-1992-1995","title":"Sierra 18-2791 Lower Unit Seal Kit - Replaces OMC 3850597","description":"\u003cp\u003eThe Sierra 18-2791 Lower Unit Seal Kit provides the seals needed to service and reseal a marine outboard or sterndrive lower unit, helping prevent gear lube leaks and water intrusion into the gearcase. It is supplied as a complete kit so the necessary seals are on hand in a single part number rather than sourcing individual pieces separately. The kit is packaged as a single unit (Number of Items: 1) and is sold per piece. Country of origin is Taiwan, and the kit carries a limited warranty from Sierra.\u003c\/p\u003e\u003cp\u003eThis kit is a direct cross-reference to OEM part 3850597, making it straightforward to identify as the correct replacement when servicing a lower unit originally fitted with that OEM seal. Buyers replacing worn or hardened lower unit seals during a gearcase rebuild, prop shaft seal replacement, or routine maintenance can use this kit to restore a proper seal without needing to locate discontinued or harder-to-find original equipment parts.\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 18-2791\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces (OEM):\u003c\/strong\u003e 3850597\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282113049\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.27 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 10.88 x 8 x 1.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 8 x 1.75 x 10.87 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Taiwan\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Items:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned as a lower unit seal kit for marine outboard\/sterndrive applications originally using OEM seal 3850597.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e3850597\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2791 Lower Unit Seal Kit include?\u003c\/strong\u003e The 18-2791 kit includes the seals needed to reseal a marine lower unit, packaged as a single kit (Number of Items: 1) rather than individual loose seals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the 18-2791 kit replace?\u003c\/strong\u003e Sierra 18-2791 replaces OEM part 3850597, so it can be ordered as a direct substitute wherever that original seal is called for.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2791 kit genuine Sierra or an aftermarket part?\u003c\/strong\u003e It is a genuine Sierra-branded part, sold under Sierra part number 18-2791, and functions as an aftermarket equivalent to the original OEM 3850597 seal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2791 Lower Unit Seal Kit weigh?\u003c\/strong\u003e The kit weighs 0.27 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the package dimensions of the 18-2791 seal kit?\u003c\/strong\u003e Packaged dimensions for the Sierra 18-2791 kit are 10.88 x 8 x 1.75 inches, with item dimensions of 8 x 1.75 x 10.87 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is the Sierra 18-2791 seal kit manufactured?\u003c\/strong\u003e This kit's country of origin is Taiwan.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color are the components in the 18-2791 kit?\u003c\/strong\u003e The kit is listed in white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2791 kit come with a warranty?\u003c\/strong\u003e Yes, the Sierra 18-2791 Lower Unit Seal Kit is covered by a limited warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many seal kits come in one 18-2791 package?\u003c\/strong\u003e One 18-2791 kit contains a single unit (Number of Items: 1), and it is priced and sold per piece.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen would I need the 18-2791 Lower Unit Seal Kit?\u003c\/strong\u003e This kit is used when servicing or rebuilding a lower unit gearcase that originally used seal 3850597, such as during a reseal to stop gear lube leaks.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-2791 the correct part number to search for this seal kit?\u003c\/strong\u003e Yes, 18-2791 is the public Sierra part number for this Lower Unit Seal Kit and is the number to reference when ordering or cross-checking against OEM 3850597.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988113305819,"sku":"SIE-18-2791","price":132.24,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2791_lg__19628.1558123639.500.750.jpg?v=1785188297"},{"product_id":"sierra-18-3760-bell-housing-bushing-kit-for-mercruiser-alpha-one-gen-ii-sterndrives-serial-f680000-up-replaces-oem-23-806036a1","title":"Sierra Bell Housing Bushing Kit 18-3760, Replaces Mercruiser 23-806036A1","description":"\u003cp\u003eThe Sierra Bell Housing Bushing Kit, part number 18-3760, is a replacement bushing kit for marine bell housing applications. It is built to meet or exceed the quality of the original equipment part it replaces, making it a reliable choice for maintenance or repair work on the bell housing assembly. This kit is designed as a direct equivalent to several original equipment and aftermarket cross-reference numbers, so it can be ordered as a straightforward replacement without needing to source a discontinued or hard-to-find original part.\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 18-3760\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 0.11 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282238247\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercruiser Bellows\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGLM 87562\u003c\/li\u003e\n\u003cli\u003eMallory 9-72162\u003c\/li\u003e\n\u003cli\u003eMercruiser 23-806036A1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-3760 Bell Housing Bushing Kit used for?\u003c\/strong\u003e It is a bushing kit for the bell housing assembly on marine drive applications, used to replace worn original equipment bushings during maintenance or repair.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-3760 kit meet OEM quality standards?\u003c\/strong\u003e Yes, Sierra states that this bushing kit meets or exceeds the quality of the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does Sierra 18-3760 cross-reference to?\u003c\/strong\u003e This kit is interchangeable with GLM 87562, Mallory 9-72162, and Mercruiser 23-806036A1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-3760 compatible with Mercruiser 23-806036A1?\u003c\/strong\u003e Yes, Sierra part number 18-3760 is listed as an equivalent replacement for Mercruiser 23-806036A1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-3760 bushing kit weigh?\u003c\/strong\u003e The kit weighs 0.11 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the Sierra 18-3760 kit?\u003c\/strong\u003e It measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3760 a genuine Sierra part or a generic aftermarket substitute?\u003c\/strong\u003e It is a genuine Sierra International part, manufactured to meet or exceed the specifications of the original equipment bushing it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-3760 Bell Housing Bushing Kit?\u003c\/strong\u003e The UPC is 808282238247.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the Sierra 18-3760 replace a GLM 87562 bushing?\u003c\/strong\u003e Yes, GLM 87562 is one of the cross-reference numbers this Sierra 18-3760 kit is interchangeable with.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat category of part is Sierra 18-3760 listed under?\u003c\/strong\u003e It falls under the Mercruiser Bellows category as a bell housing bushing kit.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988164948187,"sku":"SIE-18-3760","price":16.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3760_lg__92399.1729087576.500.750.jpg?v=1785189049"},{"product_id":"sierra-18-8206-1-transom-seal-kit-for-mercruiser-alpha-one-gen-ii-sterndrive-replaces-30-803099t1","title":"Sierra 18-8206-1 Transom Seal Kit for MerCruiser Alpha One Gen II, Replaces 30-803099T1","description":"\u003cp\u003eThe Sierra 18-8206-1 Transom Seal Kit is a transom repair kit built for MerCruiser Alpha One Gen II stern drives. It is used to reseal the transom assembly where the drive shaft housing passes through the boat's transom, replacing the water intake hose and hose clamps that seal this critical connection between the engine compartment and the outdrive. Keeping this seal in good condition helps prevent water intrusion into the boat and exhaust or coolant leakage at the transom, both common failure points as the original hoses and clamps age and harden.\u003c\/p\u003e\u003cp\u003eThis kit contains a water intake hose (Sierra 18-3602, O.E. 32-41725-33) along with two smaller hose clamps (Sierra 18-710-16-2) and one larger hose clamp (Sierra 18-710-24-2), giving the installer everything needed to reseal the water intake path in one purchase. It is sold and priced per package of 5 kits, which suits shops and repowers servicing multiple units or keeping stock on hand. The kit directly replaces OEM part 30-803099T1 and is designed to fit MerCruiser Alpha One Gen II drive systems.\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 18-8206-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Transom Seal Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e MerCruiser I\/O Drive System\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e MerCruiser Alpha One Gen II\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 5 kits per package (priced per package)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e Water Intake Hose (18-3602, O.E. 32-41725-33) x1, Hose Clamp (18-710-16-2) x2, Hose Clamp (18-710-24-2) x1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 4.55 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e China\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMerCruiser Alpha One Gen II\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e30-803099T1\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-8206-1 Transom Seal Kit fit?\u003c\/strong\u003e The 18-8206-1 kit is designed for MerCruiser Alpha One Gen II stern drive systems, sealing the transom area where the drive shaft housing passes through the boat's transom.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does 18-8206-1 replace?\u003c\/strong\u003e It replaces OEM part number 30-803099T1, so any listing or parts diagram referencing that number matches the Sierra 18-8206-1 Transom Seal Kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the transom seal kit?\u003c\/strong\u003e The kit includes one water intake hose (Sierra 18-3602, O.E. 32-41725-33), two smaller hose clamps (Sierra 18-710-16-2), and one larger hose clamp (Sierra 18-710-24-2).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many kits come in one package?\u003c\/strong\u003e The 18-8206-1 is sold in a package of 5 kits and priced per package, not per individual kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the transom seal kit weigh?\u003c\/strong\u003e The Sierra 18-8206-1 Transom Seal Kit weighs 4.55 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Sierra part or an aftermarket copy?\u003c\/strong\u003e The 18-8206-1 is a genuine Sierra-branded transom seal kit manufactured as a direct replacement for MerCruiser Alpha One Gen II drives, not a generic clone.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is the Sierra 18-8206-1 manufactured?\u003c\/strong\u003e The transom seal kit is manufactured in China under the Sierra brand.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy does the transom seal need to be replaced?\u003c\/strong\u003e Over time the water intake hose and clamps in the transom assembly harden and crack, which can allow water intrusion or leaks at the transom on Alpha One Gen II drives; the 18-8206-1 kit provides fresh replacement hose and clamps for this repair.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the kit include the transom seal itself or just hoses and clamps?\u003c\/strong\u003e The 18-8206-1 package contains the water intake hose and its three hose clamps used to reseal this connection; it does not list a separate rubber transom gasket beyond these components.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-8206-1 kit work on a Bravo or Alpha One Gen I drive?\u003c\/strong\u003e The 18-8206-1 Transom Seal Kit is specified for MerCruiser Alpha One Gen II drives; fitment for other drive generations is not stated for this part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the O.E. Number for the water intake hose in this kit?\u003c\/strong\u003e The water intake hose included in the Sierra 18-8206-1 kit corresponds to O.E. Number 32-41725-33.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988432990427,"sku":"SIE-18-8206-1","price":241.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-8206-1__26408.1729023051.500.750.jpg?v=1785187976"},{"product_id":"sierra-18-8213-transom-seal-kit-for-mercruiser-r-mr-alpha-one-1983-90-sterndrives-replaces-30-803097t1","title":"Sierra Transom Seal Kit 18-8213, White Round Seal for Mercruiser Bellows Systems","description":"\u003cp\u003eThe Sierra Transom Seal Kit, part number 18-8213, is a round seal kit designed to seal the transom assembly on Mercruiser bellows systems, helping to prevent water intrusion at the transom where the drive unit passes through the boat's hull. The kit is finished in white and includes the transom seal kit components needed for a proper seal at this critical connection point. Keeping the transom seal in good condition is essential to protecting the bilge from water entry and maintaining the integrity of the stern drive housing. This kit carries the Sierra brand name that boat owners and marine technicians rely on for stern drive and outboard replacement parts. At 4.6 pounds, it ships as a complete, ready-to-install kit under Sierra part number 18-8213.\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 18-8213\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Category:\u003c\/strong\u003e Mercruiser Bellows\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Transom Seal Kit\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\u003eWeight:\u003c\/strong\u003e 4.6 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282305277\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-8213 transom seal kit used for?\u003c\/strong\u003e It is a transom seal kit that seals the transom assembly on Mercruiser bellows systems, helping prevent water from entering the boat where the drive unit passes through the hull.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-8213 seal kit?\u003c\/strong\u003e The kit is white in color and round in shape.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-8213 transom seal kit weigh?\u003c\/strong\u003e This transom seal kit weighs 4.6 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-8213 a complete kit or a single part?\u003c\/strong\u003e Sierra part 18-8213 is sold as a transom seal kit, meaning it includes the components needed for the transom seal as a set rather than a single individual piece.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat brand makes part number 18-8213?\u003c\/strong\u003e Part number 18-8213 is manufactured by Sierra, a brand known for marine engine and stern drive replacement parts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-8213 genuine Sierra or aftermarket?\u003c\/strong\u003e It is a genuine Sierra-branded transom seal kit, not a generic third-party part, carrying Sierra's own part number 18-8213.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat category of boat parts does the 18-8213 seal kit belong to?\u003c\/strong\u003e This Sierra seal kit falls under Mercruiser bellows related products, since transom seals work alongside the bellows system on stern drive boats.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-8213 transom seal kit?\u003c\/strong\u003e The UPC for this Sierra transom seal kit is 808282305277.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat shape is the Sierra transom seal in kit 18-8213?\u003c\/strong\u003e The seal included in Sierra kit 18-8213 is round in shape.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy is replacing the transom seal important on a stern drive boat?\u003c\/strong\u003e A worn or damaged transom seal, such as the one included in Sierra kit 18-8213, can allow water to enter the bilge through the drive unit opening in the transom, so replacing it helps maintain a proper watertight seal.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988433023195,"sku":"SIE-18-8213","price":195.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/Untitled-1__32907.1753840720.500.750.jpg?v=1785189057"},{"product_id":"transom-seal-kit-for-mercruiser-alpha-one-r-mr-and-one-with-exhaust-tube-replaces-30-803098t1-greaseable-gimbal-bearing-bellows-clamp-gaskets","title":"Sierra Transom Seal Kit 18-8205, Replaces 30-803098T1, Fits MerCruiser I, R, MR, Alpha One with Exhaust Tube","description":"\u003cp\u003eThe Sierra 18-8205 Transom Seal Kit is a complete sterndrive transom repair kit built to reseal the connection between the outdrive and the transom assembly on MerCruiser I, R, MR, and Alpha One drives equipped with an exhaust tube. Water intrusion at the transom is one of the most common causes of gimbal housing corrosion and outdrive damage, and this kit provides the gasket and bearing components needed to restore a proper seal in one job rather than sourcing individual parts separately.\u003c\/p\u003e\u003cp\u003eThe kit includes a Sierra 18-2619-1 outdrive gasket set (cross-referencing O.E. Numbers 27-64818A3 and 27-94996A1, Q2) and a Sierra 18-2100 gimbal bearing (cross-referencing O.E. Numbers 30-60794A2 and 30-60794A4). The gimbal bearing is greaseable, allowing it to be serviced with a grease gun after installation rather than requiring replacement to relubricate. The kit is finished in white and is built to meet or exceed original equipment quality as a direct replacement for MerCruiser part 30-803098T1.\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 18-8205\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Transom Seal Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e MerCruiser I, R, MR, Alpha One drives with exhaust tube\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Outdrive Gasket Set (Sierra 18-2619-1) and Gimbal Bearing (Sierra 18-2100, greaseable)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces (OEM):\u003c\/strong\u003e 30-803098T1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 13.2 x 10.2 x 6.8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 4.5 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282100988\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMerCruiser I, R, MR, and Alpha One drives with exhaust tube\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e30-803098T1\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-8205 Transom Seal Kit replace?\u003c\/strong\u003e It is a direct replacement for OEM part 30-803098T1, used to reseal the transom assembly on compatible MerCruiser sterndrives.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich drives is the 18-8205 transom seal kit designed for?\u003c\/strong\u003e This kit fits MerCruiser I, R, MR, and Alpha One drives equipped with an exhaust tube.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the Sierra 18-8205 kit?\u003c\/strong\u003e The kit contains a Sierra 18-2619-1 outdrive gasket set and a Sierra 18-2100 gimbal bearing, giving you both major sealing components in a single package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the gimbal bearing in this kit greaseable?\u003c\/strong\u003e Yes, the gimbal bearing included in the 18-8205 kit is greaseable, so it can be re-lubricated with a grease gun during routine service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM numbers does the gasket set cross-reference?\u003c\/strong\u003e The 18-2619-1 outdrive gasket set included in the 18-8205 kit cross-references O.E. Numbers 27-64818A3 and 27-94996A1, Q2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM numbers does the gimbal bearing cross-reference?\u003c\/strong\u003e The 18-2100 gimbal bearing included in the 18-8205 kit cross-references O.E. Numbers 30-60794A2 and 30-60794A4.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-8205 transom seal kit weigh?\u003c\/strong\u003e The Sierra 18-8205 Transom Seal Kit weighs 4.5 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the transom seal kit?\u003c\/strong\u003e The Sierra 18-8205 Transom Seal Kit is white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-8205 kit as packaged?\u003c\/strong\u003e The Sierra 18-8205 Transom Seal Kit measures 13.2 x 10.2 x 6.8 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many of each part come in the kit?\u003c\/strong\u003e The 18-8205 kit includes one outdrive gasket set and one gimbal bearing, for a complete single-installation transom reseal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Sierra part or an aftermarket copy?\u003c\/strong\u003e The 18-8205 is a genuine Sierra part built to meet or exceed original equipment quality as a direct replacement for MerCruiser 30-803098T1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-8205 kit fit drives without an exhaust tube?\u003c\/strong\u003e No, this kit is specified for MerCruiser I, R, MR, and Alpha One drives that have an exhaust tube.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988433154267,"sku":"SIE-18-8205","price":235.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-8205_lg__27169.1729024167.500.750.jpg?v=1785189167"},{"product_id":"transom-seal-kit-for-mercruiser-r-mr-alpha-one-1983-1990-replaces-oem-30-803099t1-sierra-18-8218","title":"Sierra Transom Seal Kit 18-8218 for Mercruiser Bellows","description":"\u003cp\u003eThe Sierra Transom Seal Kit, part number 18-8218, is a replacement seal kit designed for Mercruiser bellows applications on sterndrive-equipped boats. The transom assembly is the critical barrier between the outside water and the inside of the boat's hull, and the seals within it are what keep that barrier watertight around the drive shaft, shift cable, and steering components as they pass through the transom. Over time these seals harden, crack, or compress from age and exposure, which is when a full seal kit replacement becomes necessary rather than replacing a single component.\u003c\/p\u003e\u003cp\u003eThis kit is sold as a complete set so that all of the wear-prone sealing components in the transom assembly are addressed in one service, which is the standard approach for a proper transom rebuild rather than patching individual pieces. It is packaged as a single kit (quantity of one) for straightforward ordering and installation planning.\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 18-8218\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Transom Seal Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Mercruiser Bellows\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 4.26 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 808282305291\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e One kit\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-8218 used for?\u003c\/strong\u003e It is a transom seal kit used to reseal the transom assembly on Mercruiser bellows applications, sealing the openings where the drive shaft, shift cable, and steering components pass through the boat's transom.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a complete kit or a single seal?\u003c\/strong\u003e Sierra part number 18-8218 is sold as a complete transom seal kit, packaged as one full set rather than a single individual seal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many kits come in an order?\u003c\/strong\u003e Each order of the 18-8218 transom seal kit includes one complete kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this kit weigh?\u003c\/strong\u003e The Sierra 18-8218 Transom Seal Kit weighs 4.26 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the product dimensions of the 18-8218 kit?\u003c\/strong\u003e The packaged dimensions of the Sierra 18-8218 Transom Seal Kit are 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-8218 genuine Sierra product or aftermarket?\u003c\/strong\u003e The 18-8218 is a Sierra-branded transom seal kit manufactured under the Sierra name for marine sterndrive service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat application is this seal kit designed for?\u003c\/strong\u003e This kit is categorized for Mercruiser bellows applications, addressing the sealing components in the transom assembly on Mercruiser sterndrive setups.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy replace all the seals at once instead of one at a time?\u003c\/strong\u003e A transom seal kit like the 18-8218 bundles all the wear-prone seals in the assembly together so that a full reseal is done in a single service, since the seals typically age and fail together.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-8218 kit include installation hardware?\u003c\/strong\u003e The dossier for the Sierra 18-8218 identifies it as a seal kit; specific included hardware beyond the seals themselves is not detailed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-8218 Transom Seal Kit?\u003c\/strong\u003e The UPC for the Sierra 18-8218 Transom Seal Kit is 808282305291.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988433350875,"sku":"SIE-18-8218","price":245.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-8218__56074.1737896489.500.750.jpg?v=1785188014"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/collections\/EMP_61-08399_MerCruiser_Transom_Service_Kit__56903.1729003502.500.750_86651aaf-defa-4bd1-8411-5daef8c2c91b.jpg?v=1785356956","url":"https:\/\/www.goodvibesmarina.com\/collections\/gvcat-propellers-drive-lower-unit-lower-unit-gearcase-lower-upper-unit-seal-kits.oembed","provider":"Good Vibes Marina","version":"1.0","type":"link"}