GOOFIT
57.4mm GY6 150cc Cylinder Head Assembly for 152QMI 157QMJ 4-Stroke Scooter ATV
57.4mm GY6 150cc Cylinder Head Assembly for 152QMI 157QMJ 4-Stroke Scooter ATV
4.86 / 5.0
(14) 14 total reviews
Couldn't load pickup availability
Product Overview
Restore your engine's power with this high-performance 57.4mm Cylinder Head Assembly. Designed specifically for the GY6 150cc (152QMI/157QMJ) engine platform, this non-EGR head comes with valves pre-installed for a seamless installation. Whether you are repairing a TaoTao, Jonway, or Tank scooter, this head is engineered to improve combustion efficiency and thermal management for a smoother, more reliable ride.
Product Compatibility
This assembly is a direct replacement for Non-EGR (no Exhaust Gas Recirculation) GY6 150cc 4-stroke horizontal engines.
| Vehicle Type | Compatible Brands & Models |
| Scooter / Moped | TaoTao 150, Jonway 150, Tank 150, BMS 150, Kymco Agility 150, Ice Bear, Wolf |
| ATV / Quad | Peace Sports, Roketa, Sunl, Buyang, Coolsport 150cc Models |
| Go Kart | Hammerhead 150, Carter Talon, Yerf-Dog GX150 |
Note: Designed for standard 57.4mm bore engines. Please ensure your original head is the Non-EGR version before purchasing.
Specifications
| Feature | Measurement |
| Engine Cycle | 4-Stroke |
| Cylinder Bore | 57.4mm |
| Engine Series | GY6 (152QMI / 157QMJ) |
| EGR Type | Non-EGR (Standard) |
| Material | High-Quality Aluminum Alloy |
| Cooling System | Air Cooled |
Key Features
- Optimized Combustion: Refined valve and chamber design maximizes power output and improves fuel economy.
- Premium Thermal Control: High-quality aluminum alloy provides superior heat dissipation to withstand high-load operation.
- Pre-Installed Valves: Comes fully assembled with valves and seals, reducing installation time and complexity.
- Corrosion Resistant: Built with heat-resistant materials to ensure long-term durability in harsh environments.
- Direct OEM Fit: Engineered to original factory specifications for a hassle-free "bolt-on" installation for DIY or pros.
Share

Fitment FAQ
Will this part fit my specific model and year?
This cylinder piston kit is intended for This assembly is a direct replacement for Non-EGR (no Exhaust Gas Recirculation) GY6 150cc 4-stroke horizontal engines.; Vehicle Type; Compatible Brands & Models; Scooter / Moped; TaoTao 150, Jonway 150, Tank 150, BMS 150, Kymco Agility 150, Ice Bear, Wolf; ATV / Quad; Peace Sports, Roketa, Sunl, Buyang, Coolsport 150cc Models. Key physical/spec details from the product data include Note: Designed for standard 57.4mm bore engines. Please ensure your original head is the Non-EGR version before purchasing., Cylinder Bore: 57.4mm, 57.4mm. Use the compatibility table and product photos together before ordering.
Do I need to match the OEM part number?
Yes. If your original part has a stamped OEM or manufacturer number, match that number first before ordering. For this cylinder piston kit, also compare the bore diameter, piston-pin size, gasket pattern, stud spacing, engine code, stroke type, and cylinder height. This is especially important for GY6/Roketa/TaoTao GY6 models because similar model names can use different parts by year or trim.
What models or situations does this part not fit?
Do not order this cylinder piston kit for machines outside the listed compatibility, or for units with different bore sizes, piston-pin diameters, stroke lengths, stud spacing, or gasket patterns. Do not rely only on the model name or engine size.
What should I check before ordering?
Before ordering, compare your original part with the photos and check the bore diameter, piston-pin size, gasket pattern, stud spacing, engine code, stroke type, and cylinder height. Recheck listed specs such as Note: Designed for standard 57.4mm bore engines. Please ensure your original head is the Non-EGR version before purchasing., Cylinder Bore: 57.4mm, 57.4mm. If any connector, mounting point, size, or year detail is different, confirm fitment before installation.
Get it for my kids atv,and it's now runs great.
Good fit.
Great part as long as your mechanic actually knows what to do with it!
Mine came with the intake valve springs not assembled. Most likely a keeper was not fully seated. Not a huge deal, only took a minute to reinstall the spring and keepers. Still a good deal and worked very well. Would buy again.
I still haven't used the cylinder as of yet,but it will help me in fixing the issue I'm having with my gas scooter 150cc. Thanks.