{"product_id":"merc-15","title":"Mercury Thermostat Cover Gasket 14318005","description":"\u003cp\u003eMercury 14318005 is a genuine OEM \u003cstrong\u003ethermostat cover gasket\u003c\/strong\u003e for select Mercury and Mariner \u003cstrong\u003e2-stroke outboards\u003c\/strong\u003e. Current Mercury dealer references identify it as \u003cstrong\u003e27-14318005 GASKET \/ GASKET-THREM COVR\u003c\/strong\u003e, and show it as the current replacement for older thermostat-cover gasket numbers in the same family.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Mercury Marine OEM part number \u003cstrong\u003e14318005 \/ 27-14318005\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCataloged as a \u003cstrong\u003ethermostat cover gasket\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCurrent dealer listing shows \u003cstrong\u003eUPC 745061584112\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCurrent shipping specs are approximately \u003cstrong\u003e0.02 lb\u003c\/strong\u003e, \u003cstrong\u003e2.25 in. x 1.50 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\u003eThe strongest supportable fitment for 14318005 is Mercury and Mariner \u003cstrong\u003esmall 2-stroke outboards\u003c\/strong\u003e, especially \u003cstrong\u003e15 HP Sea Pro \/ Marathon\u003c\/strong\u003e, \u003cstrong\u003e20 HP \/ 20 Jet\u003c\/strong\u003e, \u003cstrong\u003e25 HP \/ 25 Sea Pro \/ Marathon \/ Super 15\u003c\/strong\u003e, \u003cstrong\u003e25XS\u003c\/strong\u003e, and \u003cstrong\u003e18XD \/ 20XD \/ 25XD\u003c\/strong\u003e families shown in current Mercury-oriented parts references. Broader cross-reference sources also connect it to \u003cstrong\u003e6 \/ 8 \/ 9.9 \/ 10 \/ 15 HP\u003c\/strong\u003e applications, but the clearest current Mercury-oriented support is the 15\/20\/25 and XD families above.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eVerify fitment by exact \u003cstrong\u003eoutboard serial number\u003c\/strong\u003e and the correct \u003cstrong\u003ecylinder block \/ thermostat cover\u003c\/strong\u003e diagram before ordering. Current Mercury supersession pages show older gasket numbers rolling into 14318005 across multiple serial breaks, so serial-based confirmation is the safest way to match the correct thermostat cover gasket.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace this gasket whenever the thermostat cover is removed, or when the existing gasket is leaking, compressed, damaged, or no longer sealing correctly. Since it is the thermostat cover sealing gasket, renewing it during thermostat service is usually the right move instead of reusing an older gasket. This is a practical service inference supported by its documented thermostat-cover role.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eInstall 14318005 only after confirming the correct Mercury thermostat cover and cylinder block diagram for the outboard being serviced. Current parts references show it paired with thermostat-cover and thermostat components in the cylinder block \/ covers section, so it should be matched to the exact cover style and serial range before reassembly.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCurrent sources connect \u003cstrong\u003e14318\u003c\/strong\u003e, \u003cstrong\u003e143182\u003c\/strong\u003e, \u003cstrong\u003e143183\u003c\/strong\u003e, and \u003cstrong\u003e143184\u003c\/strong\u003e as earlier Mercury OEM numbers superseded to \u003cstrong\u003e14318005\u003c\/strong\u003e. Related aftermarket cross-references include \u003cstrong\u003eSierra 18-0323\u003c\/strong\u003e, \u003cstrong\u003eGLM 32760\u003c\/strong\u003e, and \u003cstrong\u003eAM27-14318005\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eFor small outboard cooling parts like this, the important match is the \u003cstrong\u003ethermostat cover style and serial range\u003c\/strong\u003e, not just the horsepower decal. A quick serial-number check usually avoids ordering the wrong gasket from a very similar older superseded family.\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":43563837587492,"sku":"14318005","price":5.15,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/51120561-5501-4ae9-b582-c6bbe4287e9f.png?v=1776987308","url":"https:\/\/marisolmarine.com\/products\/merc-15","provider":"Marisol Marine Company","version":"1.0","type":"link"}