Scooterworks USA, LLC
Blue Line GY6 Cylinder Head 57mm | 157QMJ 150cc Engines
Description
Replace 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.
Features
- OEM-spec cast aluminum construction
- 57.4mm bore diameter
- Pre-installed valve seats and valve guides
- 24mm intake and exhaust ports with M6 threads
- Fits 157QMJ and 152QMI 125cc/150cc GY6-A engines
- Does not include studs or bolts — see SKU 155-1 bolt set
- Valve cover gasket (SKU 1100-1224) and cylinder head gasket (SKU 1100-1226) sold separately
Specifications
- SKU: 1100-1225
- Overall Height: 60mm
- Bore Diameter: 57mm (57.4mm)
- Intake Port Diameter: 24mm
- Exhaust Port Diameter: 24mm
- Port Threads: M6
- Valve Seats: Pre-installed
- Valve Guides: Included
- Country of Origin: China
Compatible Engine Codes
Fits 157QMJ-based 150cc engines with the following codes:
| GY6 157QMJ Engine Codes | ||
|---|---|---|
| 157QMJ | JJ157QMJ | 1P57QMJ |
| BN157QMJ | Other QMJ models | |
Don't see your engine code? If your engine is a GY6 150cc with a 57mm bore, this head is likely compatible.
Product Diagrams
Features
Specifications
SKU: 1100-1225 | Overall Height: 60mm | Bore: 57mm (57.4mm) | Intake Port: 24mm | Exhaust Port: 24mm | Port Threads: M6 | Valve Seats: Pre-installed | Valve Guides: Included | Engines: GY6 157QMJ/152QMI 125cc/150cc | Origin: China
Model Fitments
Brands: 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
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Same day shipping for orders placed before 2PM (CST) M-F
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30-day return period on eligible items
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Flat-rate shipping for orders shipped to the 48 Contiguous United States.
