{"product_id":"sierra-18-2056-oil-seal-for-mercury-mariner-outboards-replaces-mercury-26-89238-26-66302-1-in-black-rubber","title":"Sierra 18-2056 Oil Seal for Mercury Marine Stern Drive Model 898\/228, Replaces 26-66302 26-96503","description":"\u003cp\u003eThe Sierra 18-2056 is a rubber oil seal engineered as a direct replacement component for Mercury Marine stern drive applications, specifically fitting Stern Drive Model 898\/228 within the serial number range 4782330 to 6225576. This seal is designed to prevent oil leakage and keep contaminants out of the drive unit housing, protecting internal gears and bearings from water intrusion and lubricant loss. Built from black rubber material, the seal is sized with a 1 inch item diameter and is manufactured for compatibility with the original equipment specification it replaces.\u003c\/p\u003e\u003cp\u003eThis is a single-piece oil seal (quantity of 1 required per the applicable service reference) intended for technicians and boat owners performing stern drive maintenance or seal replacement service. It serves as a functional equivalent to Mercury Marine part numbers 26-66302 and 26-96503, allowing for straightforward replacement without altering fit or function. As a compact, precision-molded rubber component, it is intended to be installed following standard stern drive service procedures and torque\/seating practices for oil seals in this housing location.\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 18-2056\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 Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Diameter:\u003c\/strong\u003e 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.02 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 11.176 centimeters length x 10.16 centimeters width x 0.762 centimeters height\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Taiwan\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999310071\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStern Drive Model Fitment:\u003c\/strong\u003e 898\/228\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSerial Number Range:\u003c\/strong\u003e 4782330 to 6225576\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity Required:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury Marine Stern Drive Model 898\/228, serial numbers 4782330 to 6225576\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury Marine 26-66302\u003c\/li\u003e\n\u003cli\u003eMercury Marine 26-96503\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat stern drive does the Sierra 18-2056 oil seal fit?\u003c\/strong\u003e The Sierra 18-2056 fits Mercury Marine Stern Drive Model 898\/228 within the serial number range 4782330 to 6225576.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-2056 replace?\u003c\/strong\u003e This oil seal replaces Mercury Marine 26-66302 and 26-96503, so either OEM number can be cross-referenced to this Sierra 18-2056 seal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many of these seals are needed per stern drive?\u003c\/strong\u003e One Sierra 18-2056 oil seal is required per the applicable Stern Drive Model 898\/228 service application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-2056 oil seal made from?\u003c\/strong\u003e It is made from black rubber, which provides the flexibility and sealing properties needed for stern drive oil seal applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size is the Sierra 18-2056 oil seal?\u003c\/strong\u003e The Sierra 18-2056 has an item diameter of 1 inch and measures 11.176 centimeters in length, 10.16 centimeters in width, and 0.762 centimeters in height as packaged.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2056 oil seal weigh?\u003c\/strong\u003e The Sierra 18-2056 oil seal weighs 0.02 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2056 a genuine Mercury Marine part or an aftermarket seal?\u003c\/strong\u003e The 18-2056 is a Sierra-brand seal manufactured as a replacement for Mercury Marine 26-66302 and 26-96503, not an OEM Mercury Marine part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is this oil seal used within the stern drive?\u003c\/strong\u003e The 18-2056 is used within the Mercury Marine Stern Drive Model 898\/228 housing to prevent oil leakage and keep out water and debris.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the Sierra 18-2056?\u003c\/strong\u003e The order includes one Sierra 18-2056 rubber oil seal, packaged individually.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is the Sierra 18-2056 manufactured?\u003c\/strong\u003e The Sierra 18-2056 oil seal is manufactured in Taiwan.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the 18-2056 be used on a stern drive outside the listed serial number range?\u003c\/strong\u003e The Sierra 18-2056 is specified for Stern Drive Model 898\/228 with serial numbers 4782330 to 6225576; use outside that range is not confirmed by the fitment data.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988091678939,"sku":"SIE-18-2056","price":12.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/118-2056__97933.1753840676.500.750.jpg?v=1785188676","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-2056-oil-seal-for-mercury-mariner-outboards-replaces-mercury-26-89238-26-66302-1-in-black-rubber","provider":"Good Vibes Marina","version":"1.0","type":"link"}