{"product_id":"cylinder-head-valve-assembly-csc-go-qmb139-scooters","title":"Cylinder Head \u0026 Valve Assembly; CSC go., 139QMB Scooters","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\u003cp\u003eThis assembled PAIR-style cylinder head fits CSC go, go MAX and Pug scooters and bikes running 50cc 4-stroke 139QMB engines. Pulsed Secondary Air Injection System (PAIR) is an emissions control system used to lower hydrocarbon (HC) and carbon monoxide (CO) emissions by allowing air into the exhaust flow. \u003c\/p\u003e\u003cp\u003eOriginal Parts For Scooters SKU 151-240\u003cbr\u003e\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eIntake Port Diameter: 17mm  \u003c\/li\u003e\n\u003cli\u003eExhaust Port Diameter: 17mm\u003c\/li\u003e\n\u003cli\u003eValve Length: 69mm  \u003c\/li\u003e\n\u003cli\u003eEmission Control System: PAIR\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eModel Fitment\u003c\/h2\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eChicago Scooter Company go\u003c\/td\u003e\n\u003ctd\u003eChicago Scooter Company go MAX \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChicago Scooter Company Pug50\u003c\/td\u003e\n\u003ctd\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003e139QMB-based 50cc \/ 80cc engines with the following engine codes:\u003c\/strong\u003e\u003c\/p\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e139QMA\u003c\/td\u003e\n\u003ctd\u003e139QMB\u003c\/td\u003e\n\u003ctd\u003e1P39QMB\u003c\/td\u003e\n\u003ctd\u003e1P39QMA-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYN139QMB\u003c\/td\u003e\n\u003ctd\u003eJJ1P39QMB\u003c\/td\u003e\n\u003ctd\u003e139FMA-2\u003c\/td\u003e\n\u003ctd\u003eBD1P39QMB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBN139QMB\u003c\/td\u003e\n\u003ctd\u003e147QMD\u003c\/td\u003e\n\u003ctd\u003eOther QMA models\u003c\/td\u003e\n\u003ctd\u003eOther QMB models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003e\u003cspan\u003eDon't see your engine listed? If the engine code includes \"QM\" or \"FM\", this product is compatible with your vehicle.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAbout CSC: \u003c\/strong\u003eChicago Scooter Company embodies the spirit of urban mobility with its innovative and stylish lineup of scooters. Designed for city living, their scooters blend functionality, reliability, and modern design, making them the perfect choice for navigating busy streets. Experience the freedom of effortless commuting and explore the city in style with Chicago Scooter Company.\u003c\/p\u003e\u003ch2\u003eProduct Diagrams\u003c\/h2\u003e\u003cul class=\"az-content-resources\"\u003e\u003cli\u003e\n\u003ca href=\"\/search?view=az-assembly\u0026amp;q=120\"\u003eQMB139 CYLINDER HEAD \u0026amp; CAMSHAFT\u003c\/a\u003e \u003cspan\u003eCallout 4\u003c\/span\u003e\n\u003c\/li\u003e\u003c\/ul\u003e","brand":"Chicago Scooter Company","offers":[{"title":"Default Title","offer_id":67964649275713,"sku":"1100-4063","price":68.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/7785\/2225\/files\/1100-4063_7cf683cb-a7d6-437d-94af-b6a5b3cde90c.jpg?v=1792793704","url":"https:\/\/azscooterparts.com\/products\/cylinder-head-valve-assembly-csc-go-qmb139-scooters","provider":"AZScooterParts","version":"1.0","type":"link"}