{"product_id":"blue-line-fuel-valve-3-port-gy6-qmb139-1300-1156","title":"Blue Line 3-Port Frame Mount Fuel Petcock Valve: GY6\/QMB","description":"\u003ch2\u003eReliable Flow: Blue Line Vacuum-Operated 3-Port Fuel Valve\u003c\/h2\u003e\u003cp\u003eRestore your engine's fuel delivery system with the \u003cstrong\u003eBlue Line 3-Port Fuel Valve\u003c\/strong\u003e. Engineered as a direct OEM replacement for \u003cstrong\u003eGY6 139QMB and 157QMJ\u003c\/strong\u003e engines, the vacuum-actuated petcock ensures that fuel only flows when the engine is running. This critical safety feature prevents carburetor flooding and engine oil contamination, making it a vital component for the longevity of your 50cc or 150cc scooter.\u003c\/p\u003e\u003ch3\u003eTechnical Performance Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVacuum-Actuated Security:\u003c\/strong\u003e Automatically shuts off fuel flow when the engine stops, protecting your intake system from overflow and \"hydro-locking.\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal Frame Mount:\u003c\/strong\u003e Specifically designed for scooters with frame-mounted fuel petcocks where the valve is secured via a single 6.5mm bolt hole.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Flow Internal Diaphragm:\u003c\/strong\u003e Features a durable, fuel-resistant internal diaphragm that provides consistent pressure to the carburetor even under high-load conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Equivalent Quality:\u003c\/strong\u003e Part of the Blue Line series, offering factory-standard fitment and performance at a fraction of the cost of boutique brand parts.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eComprehensive Fitment Guide\u003c\/h3\u003e\u003cp\u003eThis 3-port valve is a universal fit for almost all Chinese-manufactured scooters with engine codes containing \u003cstrong\u003e\"QM\" or \"FM\"\u003c\/strong\u003e:\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;\"\u003eCompatible Codes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e50cc \/ 80cc (QMB)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e139QMB, 139QMA, 1P39QMB, YN139QMB, BN139QMB, 147QMD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e125cc \/ 150cc (QMJ)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e157QMJ, 152QMI, 161QMK, JJ157QMJ, BN157QMJ, BN161QMK-A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePopular Brands\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTaoTao, Wolf, Icebear, Peace Sports, ZNEN, Bintelli, Jonway\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\u003ePort Count:\u003c\/strong\u003e 3 Ports (Fuel In, Fuel Out, Vacuum)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e 6.5mm Bolt Hole\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Corrosion-Resistant Zinc Alloy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCross-Ref:\u003c\/strong\u003e Original Parts For Scooters SKU 164-288\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cblockquote\u003e\n\u003cstrong\u003eMechanic's Note:\u003c\/strong\u003e If your scooter won't start or is leaking fuel into the airbox, a failed vacuum diaphragm is often the culprit.\u003c\/blockquote\u003e\u003cblockquote\u003e\n\u003cstrong\u003eInstallation Tip:\u003c\/strong\u003e Before installing, verify that your vacuum lines are crack-free; a vacuum leak will prevent this valve from opening.\u003c\/blockquote\u003e\u003cblockquote\u003e\n\u003cstrong\u003eFitment Note:\u003c\/strong\u003e If your scooter has 4 ports, you need \u003cstrong\u003e\u003ca href=\"https:\/\/www.scooterworks.com\/products\/universal-parts-fuel-valve-4-port-gy6-qmb139\"\u003eSKU 164-84\u003c\/a\u003e\u003c\/strong\u003e instead.\u003c\/blockquote\u003e\u003cp style=\"font-size: 0.85em; color: #666;\"\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e 1300-1156 \u003cbr\u003e\u003cstrong\u003eVendor:\u003c\/strong\u003e BLUE LINE\u003c\/p\u003e","brand":"BLUE LINE","offers":[{"title":"Default Title","offer_id":46762276028696,"sku":"1300-1156","price":9.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/1728\/1816\/products\/1300-1156_4e278b35-3b34-467c-893b-2b99932dd81d.jpg?v=1695338309","url":"https:\/\/www.scooterworks.com\/products\/blue-line-fuel-valve-3-port-gy6-qmb139-1300-1156","provider":"Scooterworks USA, LLC","version":"1.0","type":"link"}