{"product_id":"universal-parts-carburetor-qmb139-50cc-charcoal-canister-151-233","title":"Universal QMB139 50cc Carburetor w\/ Vacuum Port: 19mm","description":"\u003ch2\u003eQMB139 Type-4 19mm Carburetor with Accelerator Pump and Vacuum Port\u003c\/h2\u003e\u003cp\u003eRestore your scooter’s fuel efficiency and smooth idling with the \u003cstrong\u003eUniversal Parts Type-4 Carburetor\u003c\/strong\u003e. Specifically designed for 50cc 4-stroke QMB139 engines, this 19mm intake carburetor features a dedicated vacuum port for \u003cstrong\u003echarcoal canister hook-up\u003c\/strong\u003e, ensuring your emissions system functions exactly as the factory intended. Whether you are dealing with a clogged pilot jet or a leaking float bowl, this complete assembly offers a cost-effective, \"bolt-on\" solution to get your scooter back on the road.\u003c\/p\u003e\u003ch3\u003eTechnical Performance Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmissions Ready:\u003c\/strong\u003e Includes the integrated charcoal canister hook-up required for compliance on modern street-legal 49cc\/50cc scooters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Throttle Response:\u003c\/strong\u003e Equipped with a built-in accelerator pump to eliminate \"flat spots\" and provide instant fuel delivery during initial acceleration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCold-Start Reliability:\u003c\/strong\u003e Features a pre-installed 2-pin male electric choke (auto-by-starter) for effortless starting in all weather conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Venturi:\u003c\/strong\u003e The 19mm inner diameter is optimized for 50cc displacement, providing the ideal air-fuel mixture for standard and mildly tuned engines.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eComprehensive Fitment Guide\u003c\/h3\u003e\u003cp\u003eThis carburetor is a standard fit for \u003cstrong\u003e50cc 4-Stroke (QMB139\/1P39QMB)\u003c\/strong\u003e scooters featuring evaporative emission systems:\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eEngine Family\u003c\/th\u003e\n\u003cth style=\"text-align: left;\"\u003eCommon Compatible Brands\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGY6 50cc (QMB139)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTaoTao, Wolf, Ice Bear, Bintelli, Peace Sports\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEPA-Regulated Models\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLance, Kymco, SYM, and various \"California-Spec\" units\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e19mm Intake (ID) \/ 38mm Air Filter Assembly Mount (OD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntake Inner Diameter:\u003c\/strong\u003e 19mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir Filter Mount Outer Diameter:\u003c\/strong\u003e 38mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChoke Type:\u003c\/strong\u003e Electric (2-Pin Male Plug)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecial Feature:\u003c\/strong\u003e Accelerator Pump \u0026amp; Canister Port\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cblockquote\u003e\n\u003cstrong\u003eMechanic's Note:\u003c\/strong\u003e If your scooter has a charcoal canister (common on newer models), using a carburetor without the proper hook-up can cause vacuum leaks and poor performance.\u003c\/blockquote\u003e\u003cblockquote\u003e\n\u003cstrong\u003eInstallation Tip:\u003c\/strong\u003e Before installing, verify your \u003cstrong\u003e\u003ca href=\"https:\/\/www.scooterworks.com\"\u003eIntake Manifold\u003c\/a\u003e\u003c\/strong\u003e isn't cracked, as air leaks there will make any new carb impossible to tune.\u003c\/blockquote\u003e\u003cblockquote\u003e\n\u003cstrong\u003ePro Tip:\u003c\/strong\u003e Always ensure your \u003cstrong\u003e\u003ca href=\"https:\/\/www.scooterworks.com\"\u003eFuel Filter\u003c\/a\u003e\u003c\/strong\u003e is clean to prevent immediate clogging of the new jets!\u003c\/blockquote\u003e\u003cp style=\"font-size: 0.85em; color: #666;\"\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e 151-233 \u003cbr\u003e\u003cstrong\u003eVendor:\u003c\/strong\u003e Universal Parts\u003c\/p\u003e\u003ch3 style=\"color: #983d3c;\"\u003eThis product is not intended for use on public roads or land.\u003c\/h3\u003e","brand":"Universal Parts","offers":[{"title":"Default Title","offer_id":49986037383448,"sku":"151-233","price":46.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/1728\/1816\/files\/151-233.webp?v=1775248254","url":"https:\/\/www.scooterworks.com\/products\/universal-parts-carburetor-qmb139-50cc-charcoal-canister-151-233","provider":"Scooterworks USA, LLC","version":"1.0","type":"link"}