{"product_id":"merc-344","title":"Mercury Manifold Stud 49545","description":"\u003cp\u003eMercury MerCruiser 49545 is a genuine OEM \u003cstrong\u003emanifold stud\u003c\/strong\u003e used on a wide range of older MerCruiser engine manifold and exhaust-related assemblies. Current Mercury dealer references list it as \u003cstrong\u003e16-49545 Stud, (3\/8 x 1.75), Manifold (1-3\/4\")\u003c\/strong\u003e and show it superseded to current replacement part number \u003cstrong\u003e8M0204664\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey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\u003e49545 \/ 16-49545\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCurrent replacement part number is \u003cstrong\u003e8M0204664\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eSize listed by Mercury as \u003cstrong\u003e3\/8 x 1.75 in.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMercury description identifies it as a \u003cstrong\u003emanifold stud\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCurrent dealer listing shows \u003cstrong\u003eGTIN 745061157149\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eRelated cross-reference sources connect it to exhaust manifold \/ elbow \/ riser service layouts on older MerCruiser engines.\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 49545 is older \u003cstrong\u003eMerCruiser manifold \/ exhaust hardware service\u003c\/strong\u003e across many legacy gas engine families. Current Mercury where-used references include \u003cstrong\u003e140 GM 181 I\/L4\u003c\/strong\u003e, \u003cstrong\u003e470 \/ 470 MIE Mercury 224 I\/L4\u003c\/strong\u003e, \u003cstrong\u003e160 \/ 165 GM 250 I\/L6\u003c\/strong\u003e, \u003cstrong\u003e200 GM 292 I\/L6\u003c\/strong\u003e, \u003cstrong\u003e260 GM 350 V8\u003c\/strong\u003e, \u003cstrong\u003e300 Tempest GM 350 V8\u003c\/strong\u003e, \u003cstrong\u003e370 \/ 400 \/ 440 \/ 460 TRS big-block applications\u003c\/strong\u003e, \u003cstrong\u003e420 \/ 425 GM 454 V8\u003c\/strong\u003e, and \u003cstrong\u003e5.7L ski \/ competition ski\u003c\/strong\u003e applications across listed serial ranges.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eVerify fitment by exact \u003cstrong\u003eengine serial number\u003c\/strong\u003e and the correct \u003cstrong\u003emanifold \/ exhaust elbow \/ riser\u003c\/strong\u003e parts diagram before ordering. This stud appears across many older MerCruiser engine families, so serial-based confirmation is the safest way to match the correct manifold hardware and superseded replacement number.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace this stud when the original is corroded, seized, stretched, damaged, broken during manifold service, or no longer provides reliable clamping. Manifold studs are commonly renewed during exhaust manifold, elbow, or riser work when existing hardware is deteriorated or difficult to remove.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eInstall 49545 or current replacement \u003cstrong\u003e8M0204664\u003c\/strong\u003e only after confirming the correct MerCruiser manifold assembly and hardware layout. Mercury lists the original as a \u003cstrong\u003e3\/8 x 1.75 in. manifold stud\u003c\/strong\u003e, so thread size, length, and assembly location should all be matched before installation.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCurrent Mercury references show \u003cstrong\u003e8M0204664\u003c\/strong\u003e as the active replacement for \u003cstrong\u003e49545 \/ 16-49545\u003c\/strong\u003e. Related cross-reference sources also associate \u003cstrong\u003eAM16-49545\u003c\/strong\u003e, \u003cstrong\u003eGLM22391\u003c\/strong\u003e, and \u003cstrong\u003eOMC\/Johnson\/Evinrude 0509516\u003c\/strong\u003e with this manifold stud application.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eWith manifold studs, the important match is the \u003cstrong\u003ethread size, length, and exact manifold location\u003c\/strong\u003e. A quick serial-number and exhaust-diagram check usually avoids mixing up similar studs used around the manifold, elbow, and riser area.\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":43563861671972,"sku":"49545","price":3.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/71fea51f-c3d9-47cd-8f98-397ec830a578.png?v=1777070528","url":"https:\/\/marisolmarine.com\/products\/merc-344","provider":"Marisol Marine Company","version":"1.0","type":"link"}