{"product_id":"merc-70","title":"Mercury MerCruiser Quicksilver O-Ring 20863","description":"\u003cp\u003eMercury MerCruiser Quicksilver \u003cstrong\u003e25-20863\u003c\/strong\u003e is a genuine Mercury Marine O-ring used as a sealing ring in select Mercury, Mariner, and MerCruiser assemblies. Mercury parts references list the base manufacturer part number as \u003cstrong\u003e20863\u003c\/strong\u003e, with GTIN \/ UPC \u003cstrong\u003e745061130234\u003c\/strong\u003e. Cross-reference data commonly identifies this O-ring as \u003cstrong\u003e2-5\/8 in. I.D. x 2-7\/8 in. O.D. x 1\/8 in. width\u003c\/strong\u003e, and it is also associated with thermostat and powerhead gasket service applications on supported engines.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Mercury Marine \/ Quicksilver O-ring reference\u003c\/li\u003e\n\u003cli\u003eOEM part number: \u003cstrong\u003e25-20863\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBase part reference: \u003cstrong\u003e20863\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSize reference: \u003cstrong\u003e2-5\/8 in. I.D. x 2-7\/8 in. O.D. x 1\/8 in. width\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eGTIN \/ UPC reference: \u003cstrong\u003e745061130234\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCommonly included in powerhead gasket set applications for select 45 Jet, 50 HP, 55 HP, and 60 HP 3-cylinder Mercury \/ Mariner outboards\u003c\/li\u003e\n\u003cli\u003eCatalog package reference: approximately \u003cstrong\u003e3.00 in. x 3.00 in. x 0.25 in.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eEngine Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis O-ring is shown in Mercury references across select older Mercury \/ Mariner outboard applications, including 4.5 HP, 7.5 HP, 45 \/ 4.5 one-cylinder, 75 HP, 450, 500, and other listed serial-number ranges. It is also cross-referenced in Sierra powerhead gasket set applications for \u003cstrong\u003e45 Jet, 50 HP, 55 HP, and 60 HP 3-cylinder Mercury \/ Mariner outboards\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eO-ring fitment depends on the exact engine model, component group, thermostat or powerhead location, and serial number range. Always confirm compatibility using the Mercury or MerCruiser serial number and the exact parts diagram before ordering.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace this O-ring whenever the related assembly is opened, or if the original seal is flattened, cut, swollen, hardened, cracked, missing, or no longer sealing properly. Reusing an old compressed O-ring can lead to leaks and repeat service.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eClean the O-ring groove and mating surface before installation. Lightly lubricate the O-ring with the service-manual-approved lubricant where specified, and make sure it seats evenly without twisting, stretching, pinching, or rolling during assembly. Confirm the exact diagram location before installation because this O-ring appears in multiple Mercury and Mariner assemblies.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e25-20863\u003c\/li\u003e\n\u003cli\u003e20863\u003c\/li\u003e\n\u003cli\u003eGLM 82310\u003c\/li\u003e\n\u003cli\u003eSierra 18-7152\u003c\/li\u003e\n\u003cli\u003eAM25-80863\u003c\/li\u003e\n\u003cli\u003eMercury \/ Mariner 25-815460 — related cross-reference in supported applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis O-ring is best matched by size, part number, and diagram location. It appears in more than one Mercury \/ Mariner service area, so using the exact serial-number diagram is safer than matching by horsepower or appearance alone.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563840700452,"sku":"20863","price":6.89,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/608373f2-7867-4fe3-b002-4ebc04fa061f.png?v=1777587618","url":"https:\/\/marisolmarine.com\/products\/merc-70","provider":"Marisol Marine Company","version":"1.0","type":"link"}