{"product_id":"merc-1002","title":"Mercury MerCruiser Quicksilver O-Ring 8M0204683","description":"\u003ch2\u003eMercury MerCruiser Quicksilver O-Ring – 8M0204683\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e 8M0204683\u003cbr\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Mercury Marine \/ Quicksilver (OEM)\u003cbr\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e O-Ring\u003cbr\u003e\n\u003cstrong\u003eDiagram Position:\u003c\/strong\u003e Position 10\u003c\/p\u003e\n\n\u003cp\u003eGenuine Mercury Marine OEM o-ring used in selected Mercury and MerCruiser assemblies. Mercury parts diagrams identify this component at diagram position 10. O-rings in marine applications provide critical fluid and pressure seals — using the correct OEM part ensures material compatibility and proper sealing performance in saltwater and freshwater environments.\u003c\/p\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSelected Mercury Marine and MerCruiser assemblies where part number 8M0204683 appears at diagram position 10\u003c\/li\u003e\n  \u003cli\u003eExact fitment must be confirmed against the correct model and serial-number parts diagram\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSystem\u003c\/h3\u003e\n\u003cp\u003eSealing \/ gasket interface — provides an o-ring seal at diagram position 10 within the applicable Mercury assembly. Refer to the official Mercury parts diagram for your model and serial number to confirm exact location and system.\u003c\/p\u003e\n\n\u003ch3\u003eWhen to Replace\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eO-ring is cracked, flattened, swollen, or shows any sign of deformation\u003c\/li\u003e\n  \u003cli\u003eFluid seepage or weeping is present at the sealed joint\u003c\/li\u003e\n  \u003cli\u003eAny time the surrounding assembly is disassembled for service\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eService Interval\u003c\/h3\u003e\n\u003cp\u003eInspect at every relevant assembly service. O-rings are low-cost consumables — best practice is to replace whenever the assembly is opened rather than reusing a compressed or aged ring.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eClean the mating groove and surface thoroughly before installing\u003c\/li\u003e\n  \u003cli\u003eLightly lubricate the o-ring with a compatible marine grease or o-ring lubricant before fitting\u003c\/li\u003e\n  \u003cli\u003eDo not stretch or twist the o-ring during installation\u003c\/li\u003e\n  \u003cli\u003eConfirm position against the Mercury parts diagram for your specific model and serial number\u003c\/li\u003e\n  \u003cli\u003eMatch by part number — o-rings of similar appearance vary in material compound and dimensional tolerance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Parts\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/8218285375524\"\u003eMercury MerCruiser O-Ring 8M0204684\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/8131398828068\"\u003eMercury MerCruiser Quicksilver O-Ring 8M0204645\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/8131444408356\"\u003eMercury MerCruiser Quicksilver O-Ring Kit 8M0164166\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/8131402498084\"\u003eMercury MerCruiser O-Ring 25-34821\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/8131402661924\"\u003eMercury MerCruiser O-Ring 25-8M0204654\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/8131401941028\"\u003eMercury Quicksilver Oil Filter Adaptor O-Ring 25-33756\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/11167582093348\"\u003eMercury MerCruiser Quicksilver Sealing Washer 8M0214950\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical FAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I substitute a generic o-ring of the same size?\u003c\/strong\u003e\u003cbr\u003e\nA: Not recommended. Marine o-rings are compound-specific for fuel, oil, or coolant compatibility. An incorrect compound can swell, harden, or fail prematurely. Use the OEM part number to ensure the correct material.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this is the right o-ring for my assembly?\u003c\/strong\u003e\u003cbr\u003e\nA: Locate part number 8M0204683 at diagram position 10 in the official Mercury parts diagram for your specific model and serial number.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Should I replace this o-ring during a routine service?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes — o-rings are inexpensive and should be replaced any time the assembly is opened. Reusing a compressed or aged o-ring risks a seal failure after reassembly.\u003c\/p\u003e\n\n\u003chr\u003e\n\u003cp\u003e\u003cem\u003eGenuine Mercury Marine \/ Quicksilver OEM part. Match by part number and diagram position for correct fitment.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eBest use case:\u003c\/strong\u003e This o-ring is the right choice for any Mercury or MerCruiser assembly service where part number 8M0204683 appears at diagram position 10. It is a consumable seal — always replace it when the assembly is opened, even if the old o-ring looks intact. A reused o-ring that has been compressed or heat-cycled is a common source of post-service leaks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMost common mistake:\u003c\/strong\u003e Ordering by size rather than part number. O-rings that appear dimensionally identical can differ in rubber compound — and the wrong compound in a fuel, oil, or coolant environment will swell or degrade, causing the seal to fail. Always order by Mercury part number.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitment guidance:\u003c\/strong\u003e Verify 8M0204683 at diagram position 10 in the Mercury parts diagram for your specific model and serial number before ordering. If you are servicing a multi-o-ring assembly, check whether sibling part \u003ca href=\"\/products\/8218285375524\"\u003e8M0204684\u003c\/a\u003e is also required — assemblies often use more than one o-ring size at different positions.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":51324694593572,"sku":"8M0204683","price":4.19,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/ac09b94e-59d2-433c-b284-89772ee699c5.png?v=1788560608","url":"https:\/\/marisolmarine.com\/products\/merc-1002","provider":"Marisol Marine Company","version":"1.0","type":"link"}