{"product_id":"fuel-valve-vacuumreplacement-gy6","title":"Blue Line Vacuum Fuel Petcock M14x1.00 - GY6, 139QMB","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\u003cp\u003eRestore reliable fuel flow with this \u003cstrong\u003evacuum-operated replacement fuel petcock\u003c\/strong\u003e. Designed for scooters with gas tanks mounted high in the tail section, this petcock uses engine vacuum to open the fuel valve automatically when the engine is running — and closes it when the engine stops, preventing fuel from flooding the carburetor. Fits the M14x1.00 coarse-thread tank fitting used across CSC models and the broad GY6 \/ QMB139 Chinese scooter platform.\u003c\/p\u003e\u003ch2\u003eFeatures\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVacuum-Operated (Automatic):\u003c\/strong\u003e Opens with engine vacuum, closes at rest — no manual ON\/OFF\/RES lever required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM14x1.00 Thread:\u003c\/strong\u003e Correct coarse-thread fitting for high-mounted tail-section fuel tanks on GY6 and QMB139 platforms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5mm Fuel Outlet Barb:\u003c\/strong\u003e Standard barb size for OEM fuel line connections on listed scooters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Filter Tube:\u003c\/strong\u003e Clear 62mm filter tube screens debris before it reaches the carb.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible Models\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCSC go. and go. MAX\u003c\/li\u003e\n\u003cli\u003eCSC Bella Classic 50\u003c\/li\u003e\n\u003cli\u003eCSC Nitro Sport 50\u003c\/li\u003e\n\u003cli\u003eCSC Pug 50\u003c\/li\u003e\n\u003cli\u003eGY6 125cc \/ 150cc scooters (157QMJ-based) with vacuum petcock\u003c\/li\u003e\n\u003cli\u003eQMB139 \/ 139QMB 50cc scooters with vacuum petcock\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e M14 x 1.00 (coarse)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNut Inner Diameter:\u003c\/strong\u003e 13mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Outlet Diameter:\u003c\/strong\u003e 5mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter Tube Length:\u003c\/strong\u003e 62mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Vacuum-operated automatic petcock\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Prima \/ OEM | SKU: 129-25 \/ 164-93\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Compare your existing petcock to the image before ordering  This petcock does \u003cstrong\u003enot\u003c\/strong\u003e fit Genuine Scooter Company models, which use a different thread pitch.\u003c\/p\u003e\u003ch2\u003eModel Fitment\u003c\/h2\u003e\u003cp\u003eCSC go., go. MAX, Bella Classic 50, Nitro Sport 50, Pug 50; GY6 125\/150cc (157QMJ) and QMB139 50cc Chinese scooters with vacuum-operated petcock and M14x1.00 tank thread\u003c\/p\u003e\u003ch2\u003eProduct Diagrams\u003c\/h2\u003e\u003cul class=\"az-content-resources\"\u003e\n\u003cli\u003e\n\u003ca href=\"\/search?view=az-assembly\u0026amp;q=2\"\u003eQMB139 FUEL TANK ASSY\u003c\/a\u003e \u003cspan\u003eCallout 3\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/search?view=az-assembly\u0026amp;q=56\"\u003eGO MAX FUEL TANK ASSY\u003c\/a\u003e \u003cspan\u003eCallout 3\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Blue Line","offers":[{"title":"Default Title","offer_id":67964647047489,"sku":"1100-1417","price":9.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/7785\/2225\/files\/1100-1417_a7cbe016-ba12-41b0-8c2c-b007318a6874.jpg?v=1792793701","url":"https:\/\/azscooterparts.com\/products\/fuel-valve-vacuumreplacement-gy6","provider":"AZScooterParts","version":"1.0","type":"link"}