{"product_id":"merc-159","title":"Mercury MerCruiser Vent Hose 34423","description":"\u003cp\u003eMercury MerCruiser Quicksilver 34423, commonly listed as \u003cstrong\u003e32-34423\u003c\/strong\u003e, is a genuine OEM hose used on older MerCruiser stern drive and engine applications. Current Mercury dealer listings identify the active part simply as \u003cstrong\u003eHOSE\u003c\/strong\u003e, while the directly superseded reference \u003cstrong\u003e34423A1\u003c\/strong\u003e is described as \u003cstrong\u003eHOSE ASSEMBLY, VENT (4 3\/4\")\u003c\/strong\u003e, which gives the strongest supportable clue to its function without overclaiming beyond the SKU.\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\u003e34423 \/ 32-34423\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCurrent Mercury dealer listing identifies it as \u003cstrong\u003eHOSE\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eDirect superseded reference \u003cstrong\u003e34423A1\u003c\/strong\u003e is listed as \u003cstrong\u003eHOSE ASSEMBLY, VENT (4 3\/4\")\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCurrent dealer listing shows \u003cstrong\u003eGTIN \/ UPC 745061137202\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCurrent shipping-spec listing shows approximate packaged size of \u003cstrong\u003e18.50 x 1.00 x 0.75 in\u003c\/strong\u003e and weight of \u003cstrong\u003e0.13 lb\u003c\/strong\u003e.\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 34423 is older Mercury MerCruiser carbureted engine and stern drive applications rather than one narrow current engine family. Current supersession and dealer references tie it to older \u003cstrong\u003eGM 181 I\/L4\u003c\/strong\u003e, \u003cstrong\u003eGM 250 I\/L6\u003c\/strong\u003e, and \u003cstrong\u003eTR \/ TRS stern drive\u003c\/strong\u003e applications, and the superseded part trail shows earlier vent-hose variants used on older MerCruiser carburetor and vent-elbow layouts.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSerial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 or drive serial number\u003c\/strong\u003e and the correct Mercury parts diagram before ordering. With 34423, the safest match is the specific hose callout in the carburetor \/ vent \/ stern drive assembly, because current supersession references fold several older hose numbers into this one active SKU.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis hose is typically replaced when the original is cracked, hardened, oil-soaked, split, collapsed, or no longer seals correctly in the system it serves. Because the superseded descriptions connect 34423 to older vent-hose style applications, replacing an aged original during related carburetor or drive service is usually the smarter move than reusing brittle original hose material. This service guidance is a practical inference based on the documented hose and vent-hose references tied to the SKU.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eInstall 34423 only after confirming the exact Mercury MerCruiser parts diagram for the engine or drive being serviced. Current references show the active number replacing several older hose variants, so the right approach is to match the SKU to the exact assembly location first rather than relying on a generic hose description alone.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCurrent supersession references connect \u003cstrong\u003e34423A1\u003c\/strong\u003e, \u003cstrong\u003e33199\u003c\/strong\u003e, \u003cstrong\u003e33458\u003c\/strong\u003e, \u003cstrong\u003e32846\u003c\/strong\u003e, \u003cstrong\u003e39786\u003c\/strong\u003e, and \u003cstrong\u003e36119\u003c\/strong\u003e to active part number \u003cstrong\u003e34423\u003c\/strong\u003e. Those earlier numbers were used for more specific hose descriptions in older cataloging, so they are best treated as legacy or superseded references tied to the current SKU.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003ePart \u003cstrong\u003e34423\u003c\/strong\u003e consolidates several older vent-hose style applications into one active SKU, so matching the exact serial-number-based diagram is the safer move than relying on a more specific old description by itself.\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":43563854069796,"sku":"34423","price":50.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/737e78b4-2caa-4cb6-ac97-1cd9dc2c2251.png?v=1776813387","url":"https:\/\/marisolmarine.com\/products\/merc-159","provider":"Marisol Marine Company","version":"1.0","type":"link"}