Description
39mm Piston for 50cc QMB139 Engines
This 39mm piston is designed specifically for 50cc 4-stroke QMB139 engines, making it an important component for proper engine function. It plays a key role in maintaining a tight seal within the combustion chamber. Replacing worn pistons and rings can prevent issues like smoke, excessive oil consumption, and low compression. This part is one of the GY6 50cc scooter parts that you should consider when ensuring your engine operates efficiently.
When to Replace It
This piston should be replaced when you notice symptoms such as engine smoking or reduced power output, which may indicate worn rings. Regular maintenance of this part helps to maintain engine efficiency and prolong the life of your scooter.
Specifications
- Outer Diameter: 39mm
- Overall Height: 33mm
- Piston Pin: 13mm
- Compression Height: 17.25mm
- Circlips: Included
Fitment
This piston is compatible with various makes and models featuring the QMB139 50cc/49cc engine.
- GY6 50cc engines
Not sure it fits? Contact us with your scooter's make, model and year and we'll confirm the fit before you order.
Shop more: GY6 50cc Scooter Parts (139QMB) · GY6 Scooter Parts · Scooter Pistons & Piston Rings · Scooter Parts
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