{"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","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-2624-lower-unit-seal-kit-replaces-mercury-26-85090a2-outboard-gearcase-seal-kit","provider":"Good Vibes Marina","version":"1.0","type":"link"}