{"product_id":"sierra-18-0525-oil-seal-for-mercury-mercruiser-26-45587-0-390-in-shaft-marine-engine-seal","title":"Sierra Oil Seal 18-0525, Replaces 26-45587, 0.390 x 0.628 x 0.124 Inch","description":"\u003cp\u003eThe Sierra 18-0525 is a precision oil seal sized for a 0.390 inch shaft, with a 0.628 inch outside diameter and a 0.124 inch width. It is a direct replacement for OEM number 26-45587 and features a machined exterior finish for a consistent, leak-resistant fit at the shaft bore.\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 18-0525\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 26-45587\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Size:\u003c\/strong\u003e 0.390 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside Diameter:\u003c\/strong\u003e 0.628 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 0.124 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Machined\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 030999874368\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned as a dimensional and functional match for applications originally fitted with OEM part 26-45587. Confirm your existing seal or housing calls for 26-45587 before ordering.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e26-45587\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part does the Sierra 18-0525 replace?\u003c\/strong\u003e It is a direct replacement for OEM number 26-45587, so any application calling for that part number accepts the Sierra 18-0525 oil seal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the shaft size for this seal?\u003c\/strong\u003e 0.390 inches is the shaft size for the Sierra 18-0525 oil seal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the outside diameter and width of the 18-0525 seal?\u003c\/strong\u003e The Sierra 18-0525 has a 0.628 inch outside diameter and a 0.124 inch width.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-0525 oil seal weigh?\u003c\/strong\u003e It weighs 0.01 pounds, consistent with its small, compact seal size.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-0525 seal genuine Sierra or aftermarket?\u003c\/strong\u003e Yes, the 18-0525 is a genuine Sierra-branded part, manufactured as a direct-fit equivalent to OEM 26-45587.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat finish does the Sierra 18-0525 have?\u003c\/strong\u003e It has a machined exterior finish for consistent, accurate sealing at the shaft bore.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the 18-0525 in place of 26-45587 without modification?\u003c\/strong\u003e Yes, the Sierra 18-0525 is dimensionally matched to OEM 26-45587 and installs as a direct swap.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the 18-0525?\u003c\/strong\u003e You receive one Sierra 18-0525 oil seal sized to 0.390 inch shaft, 0.628 inch OD, and 0.124 inch width.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the part number 18-0525 identify the shaft size or the OEM equivalent?\u003c\/strong\u003e 18-0525 is the Sierra part number itself; 26-45587 is the OEM number it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this seal suitable for both port and starboard applications?\u003c\/strong\u003e No side-specific designation is given for the 18-0525; it is a standard oil seal sized by shaft diameter, OD, and width rather than by mounting side.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988075589851,"sku":"SIE-18-0525","price":7.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-0525_lg__12658.1558118991.500.750.jpg?v=1785188326","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-0525-oil-seal-for-mercury-mercruiser-26-45587-0-390-in-shaft-marine-engine-seal","provider":"Good Vibes Marina","version":"1.0","type":"link"}