{"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","url":"https:\/\/www.goodvibesmarina.com\/products\/lower-unit-seal-kit-for-evinrude-johnson-omc-outboards-replaces-oem-396355-sierra-18-2659","provider":"Good Vibes Marina","version":"1.0","type":"link"}