{"product_id":"merc-75","title":"Mercury MerCruiser Quicksilver Gimbal Housing Washer 21900","description":"\u003cp\u003eMercury MerCruiser Quicksilver \u003cstrong\u003e12-21900\u003c\/strong\u003e is a genuine Mercury Marine flat washer used in select MerCruiser sterndrive, transom, and gimbal housing assemblies. Mercury parts references commonly show this washer used at the \u003cstrong\u003egimbal housing bolt\u003c\/strong\u003e location, where it works with the related bolt and nut hardware to support proper clamping and load distribution.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Mercury Marine \/ Quicksilver washer reference\u003c\/li\u003e\n\u003cli\u003eCommonly used as a \u003cstrong\u003egimbal housing bolt washer\u003c\/strong\u003e in supported MerCruiser assemblies\u003c\/li\u003e\n\u003cli\u003eOEM part number: \u003cstrong\u003e12-21900\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBase part reference: \u003cstrong\u003e21900\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eGTIN \/ UPC reference: \u003cstrong\u003e745061130609\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCatalog package reference: approximately \u003cstrong\u003e1.00 in. x 1.00 in. x 0.10 in.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCatalog weight reference: approximately \u003cstrong\u003e0.02 lb\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 washer is shown across a broad range of MerCruiser applications, including select older \u003cstrong\u003e120\/140, 160, 165, 225-S, 228, 233, 250, 260, 470, 485, 888, 898\u003c\/strong\u003e, early MerCruiser sterndrive assemblies, \u003cstrong\u003eR\/MR\/Alpha One\u003c\/strong\u003e, \u003cstrong\u003eAlpha One Gen II\u003c\/strong\u003e, and related transom assembly applications depending on serial number range. It is also commonly described as a genuine MerCruiser sterndrive flat washer found on \u003cstrong\u003eAlpha 1, Alpha 1 Gen 2, Bravo 1, Bravo 2, and Bravo 3\u003c\/strong\u003e sterndrives.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eWasher fitment depends on the exact drive, transom assembly, gimbal housing, hardware stack, and serial number range. Always confirm compatibility using the MerCruiser serial number and the exact parts diagram before ordering, especially when replacing gimbal housing or transom hardware.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace this washer if it is missing, corroded, bent, distorted, worn, crushed, or damaged during removal. A washer in poor condition may not distribute clamping load correctly and should not be reused in a critical sterndrive or transom hardware location.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm the washer’s exact location in the MerCruiser parts diagram before installation. Mercury diagrams commonly show \u003cstrong\u003e21900\u003c\/strong\u003e used with related gimbal housing bolt hardware, including nut reference \u003cstrong\u003e34087\u003c\/strong\u003e in supported assemblies. Inspect the bolt, nut, mating surfaces, and surrounding transom or gimbal hardware while the area is apart.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e12-21900\u003c\/li\u003e\n\u003cli\u003e21900\u003c\/li\u003e\n\u003cli\u003eMercury Marine 21900\u003c\/li\u003e\n\u003cli\u003eQuicksilver 12-21900\u003c\/li\u003e\n\u003cli\u003eRelated hardware reference: \u003cstrong\u003e11-34087\u003c\/strong\u003e nut, used with the gimbal housing bolt hardware stack in supported diagrams\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis washer is a small part, but the location matters. If it is being used in a gimbal housing or transom assembly, match it by the exact MerCruiser diagram callout rather than substituting a generic washer by size or appearance.\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":43563840897060,"sku":"21900","price":5.09,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/3131e186-dc44-4eda-9cda-6e32c6c95666.png?v=1777587808","url":"https:\/\/marisolmarine.com\/products\/merc-75","provider":"Marisol Marine Company","version":"1.0","type":"link"}