{"product_id":"cylinder-head-oem-150cc-gy6","title":"Blue Line GY6 Cylinder Head 57mm | 157QMJ 150cc Engines","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\u003cp\u003eReplace a cracked or worn cylinder head on your 150cc engine with this Blue Line OEM-spec 57.4mm cast aluminum cylinder head. Includes pre-installed valve seats and valve guides. Compatible with 157QMJ engine families using GY6-A block engines used in the vast majority of carbureted 150cc Chinese-manufactured scooters, ATVs, and go-karts.\u003c\/p\u003e\u003ch2\u003eFeatures\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOEM-spec cast aluminum construction\u003c\/li\u003e\n\u003cli\u003e57.4mm bore diameter\u003c\/li\u003e\n\u003cli\u003ePre-installed valve seats and valve guides\u003c\/li\u003e\n\u003cli\u003e24mm intake and exhaust ports with M6 threads\u003c\/li\u003e\n\u003cli\u003eFits 157QMJ and 152QMI 125cc\/150cc GY6-A engines\u003c\/li\u003e\n\u003cli\u003eDoes not include studs or bolts — see SKU 155-1 bolt set\u003c\/li\u003e\n\u003cli\u003eValve cover gasket (SKU 1100-1224) and cylinder head gasket (SKU 1100-1226) sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e 1100-1225\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Height:\u003c\/strong\u003e 60mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore Diameter:\u003c\/strong\u003e 57mm (57.4mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntake Port Diameter:\u003c\/strong\u003e 24mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust Port Diameter:\u003c\/strong\u003e 24mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePort Threads:\u003c\/strong\u003e M6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Seats:\u003c\/strong\u003e Pre-installed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Guides:\u003c\/strong\u003e Included\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e China\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatible Engine Codes\u003c\/h2\u003e\u003cp\u003eFits 157QMJ-based 150cc engines with the following codes:\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth colspan=\"3\"\u003eGY6 157QMJ Engine Codes\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e157QMJ\u003c\/td\u003e\n\u003ctd\u003eJJ157QMJ\u003c\/td\u003e\n\u003ctd\u003e1P57QMJ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBN157QMJ\u003c\/td\u003e\n\u003ctd\u003eOther QMJ models\u003c\/td\u003e\n\u003ctd\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eDon't see your engine code? If your engine is a GY6 150cc with a 57mm bore, this head is likely compatible.\u003c\/p\u003e\u003cp\u003eCalifornia Prop 65 Warning: www.p65warnings.ca.gov\u003c\/p\u003e\u003ch2\u003eModel Fitment\u003c\/h2\u003e\u003cp\u003eBrands: Amstar, Amigo, Ascend, Baotian, Bashan, Blade, Boom, Chicago Scooter Company, Dongfang, Roketa, Baotian, Bashan, BMS, Cool Sports, E Ton, Fly Wing, Eagle, Fly, Italica, Riya, Ice Bear, Jackel, Jet Moto, JCL, Taotao, Peace, JM Star, Jonway, Kazuma, Keeway, KMD, Kymco, Lance, Lifan, Linhai, Loncin, Longbo, Fuxin, Jiajue, Tao Tao, Tao Motors, Trailmaster, Maxtrade, Meitien, Motofino, Motorino, NST, Panterra, Panther, Qlink, Yiben, Red Streak, Redcat, Roketa, Schwinn, Strada, SYM, Tank, Terminator ,Tomberlin, TNG, United Motors, Vento, Vitacci, Wildfire, Wolf, X-Treme, X-Pro, Yongfu, ZNEN, Zhongneng , Zhilong, Geely, Wangye, ZH and more Manufactured by: Taizhou Zhongneng Motorcycle Co.; Jiangsu Zhongneng Motorcycle Co.; Jiangsu Meijunte Technology Co.; Taizhou Qianxin Vehicle Co.; Ningbo Dongfang Lingyun Vehicle Made Co.; Taizhou Zhilong Technology Co.; Zhejiang Jiajue Motorcycle Manufacturing Co.; Zhejiang Gelly Ming Industrial Co.; Taizhou City Senglong Motorcycle Manufacture Co.; Jiangsu Sacin Motorcycle Co.; Jiangsu Linhai Power Machinery Group Co.; Zheijiang TaoTao Vehicles Co.; Zhejiang Senling Motorcycle Co.; Sanmen County Yongfu Machine Co; Taizhou Jiaojiang Zhiwei Motorcycle Manufacture Co.; Huzhou Daixi Zhenhua Technology Trade Co.; Taizhou Zhongneng Motorcycle Co.; Zhejiang Riya Motorcycle Co.; Ningbo Longjia Motorcycle Co.; Taizhou Zhongneng Motorcycle Co.; and more\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=245\"\u003eGY6 CYLINDER HEAD\u003c\/a\u003e \u003cspan\u003eCallout 1\u003c\/span\u003e\n\u003c\/li\u003e\u003c\/ul\u003e","brand":"Brand not specified","offers":[{"title":"Default Title","offer_id":67964598157633,"sku":"1100-1225","price":44.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/7785\/2225\/files\/1100-1225_89ab56f1-3bd7-4695-8219-ec68149db8cc.jpg?v=1792793653","url":"https:\/\/azscooterparts.com\/products\/cylinder-head-oem-150cc-gy6","provider":"AZScooterParts","version":"1.0","type":"link"}