{"product_id":"complete-qmb139-cylinder-head-non-emissions","title":"Universal Parts QMB139 Non Emissions Head - 69mm Valves","description":"\u003cp\u003eReplace a damaged or emissions-restrictive head with the \u003cstrong\u003eUniversal Parts QMB139 Non-Emissions Cylinder Head\u003c\/strong\u003e (SKU 151-249). Fully assembled cast aluminum head — 4-bolt deck pattern, machined valve seats, two valve spring\/retainer assemblies (intake and exhaust) installed, spark plug boss, finned cooling fins, cam chain tunnel, and both port flanges machined. Oval 2-bolt intake port flange (17mm ID), round exhaust port flange (18mm ID). 70.5mm diagonal valve center-to-center spacing, 69mm valve length. Non-emissions style — no secondary air injection port. Ready to install.\u003c\/p\u003e\u003ch2\u003eFeatures\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFully Assembled — Valves, Springs, and Retainers Pre-Installed, Ready to Bolt On\u003c\/li\u003e\n\u003cli\u003eNon-Emissions Style — No Secondary Air Injection Port for Performance or Replacement Builds\u003c\/li\u003e\n\u003cli\u003eCast Aluminum Body — 4-Bolt Deck, Finned Cooling Fins, Spark Plug Boss, Cam Chain Tunnel\u003c\/li\u003e\n\u003cli\u003e17mm Oval Intake Port (2-Bolt Flange) | 18mm Round Exhaust Port | 69mm Valve Length | 70.5mm Valve Spacing\u003c\/li\u003e\n\u003cli\u003eFits 139QMB\/QMA 50cc\/80cc and 157QMJ-Based 125cc\/150cc\/169cc 4-Stroke Engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e 151-249\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Universal Parts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Type:\u003c\/strong\u003e 139QMB \/ 139QMA 4-stroke 50cc \/ 80cc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStyle:\u003c\/strong\u003e Non-emissions (no secondary air port)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Fully assembled (valves, springs, retainers installed)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Length:\u003c\/strong\u003e 69mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Center-to-Center Spacing:\u003c\/strong\u003e 70.5mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntake Port Diameter:\u003c\/strong\u003e 17mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust Port Diameter:\u003c\/strong\u003e 18mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeck Pattern:\u003c\/strong\u003e 4-bolt\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible Engine Codes\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003e139QMB-based 50cc \/ 80cc engines:\u003c\/strong\u003e\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth\u003eEngine Codes\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003e139QMA    139QMB    1P39QMB    1P39QMA-2\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eYN139QMB    JJ1P39QMB    139FMA-2    BD1P39QMB\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eBN139QMB    147QMD    Other QMA models    Other QMB models\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIntended for off-road use only. Not intended for use on public roads or land.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e \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","brand":"Universal Parts","offers":[{"title":"Default Title","offer_id":67964505882945,"sku":"151-249","price":52.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/7785\/2225\/files\/556890.jpg?v=1792945434","url":"https:\/\/azscooterparts.com\/products\/complete-qmb139-cylinder-head-non-emissions","provider":"AZScooterParts","version":"1.0","type":"link"}