{"product_id":"universal-parts-insulator-for-qmb139-carburetor-151-7","title":"Universal QMB139 50cc Carburetor Intake Insulator Spacer","description":"\u003ch2\u003eQMB139 50cc Carburetor Insulator\u003c\/h2\u003e\u003cp\u003eProtect your fuel system and ensure a stable idle with the \u003cstrong\u003eUniversal Parts Carburetor Insulator\u003c\/strong\u003e. Specifically designed for the 50cc 4-stroke QMB139 (GY50) engine platform, this high-density plastic spacer sits between the intake manifold and the cylinder head. Its primary function is to act as a thermal barrier, preventing extreme engine heat from reaching the carburetor, which can cause fuel boiling, \"vapor lock,\" and inconsistent performance.\u003c\/p\u003e\u003ch3\u003eTechnical Performance Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Isolation:\u003c\/strong\u003e Crafted from heat-resistant composite material that effectively blocks heat transfer, keeping your carburetor cool for more reliable fuel atomization.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAirtight Sealing Surface:\u003c\/strong\u003e Features precision-flat mating surfaces to eliminate vacuum leaks, which are the leading cause of \"hanging idles\" and lean-run conditions on 50cc scooters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard 45mm Fitment:\u003c\/strong\u003e Engineered with the industry-standard 45mm bolt-hole spacing, ensuring a drop-in fit for almost all Chinese 50cc 4-stroke intake manifolds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Composite Construction:\u003c\/strong\u003e Unlike cheap plastic alternatives, this insulator is designed to resist warping and cracking under the constant heat-cycling of an air-cooled engine.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eComprehensive Fitment Guide\u003c\/h3\u003e\u003cp\u003eThis insulator is a standard replacement part for the \u003cstrong\u003e50cc 4-Stroke (QMB139\/GY6 50)\u003c\/strong\u003e engine found in:\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eBrand\u003c\/th\u003e\n\u003cth style=\"text-align: left;\"\u003eCommon Compatible Models\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTaoTao\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eATM50-A1, Pony 50, Speedy 50, Venus 50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWolf Brand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIslander, Jet, Lucky, RX-50, V50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBintelli\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBreeze 50, Sprint 50, Havoc 50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChicago Scooter Co.\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGo., Go. Max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChinese 139QMB\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMost Chinese model 50cc scooters\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\u003eCenter Hole Diameter:\u003c\/strong\u003e 16mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBolt Hole Spacing:\u003c\/strong\u003e 45mm (Center-to-Center)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Heat-Resistant Phenolic\/Plastic Composite\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e 50cc 4-Stroke QMB139 Engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cblockquote\u003e\n\u003cstrong\u003eMechanic's Note:\u003c\/strong\u003e If your scooter runs great when cold but starts stumbling or dying once the engine gets hot, this insulator may be cracked or missing. \u003cstrong\u003ePro Tip:\u003c\/strong\u003e This insulator requires a \u003cstrong\u003e\u003ca href=\"https:\/\/www.scooterworks.com\/products\/gasket-carburetor-insulator-gy6\"\u003ePaper Gasket\u003c\/a\u003e\u003c\/strong\u003e on both sides to create a true vacuum seal. Always check your \u003cstrong\u003e\u003ca href=\"https:\/\/www.scooterworks.com\/products\/intake-manifold-qmb139-50cc\"\u003eIntake Manifold\u003c\/a\u003e\u003c\/strong\u003e for cracks while you have this assembly apart.\u003c\/blockquote\u003e\u003cp style=\"font-size: 0.85em; color: #666;\"\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e 151-7 \u003cbr\u003e\u003cstrong\u003eVendor:\u003c\/strong\u003e Universal Parts\u003c\/p\u003e","brand":"Universal Parts","offers":[{"title":"Default Title","offer_id":50319592259864,"sku":"151-7","price":3.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/1728\/1816\/files\/Carburetorinsulator.jpg?v=1775314846","url":"https:\/\/www.scooterworks.com\/products\/universal-parts-insulator-for-qmb139-carburetor-151-7","provider":"Scooterworks USA, LLC","version":"1.0","type":"link"}