Description
64mm Exhaust Valve for 50cc QMB139 Engines
This exhaust valve is specifically made for 50cc 4-stroke QMB139 engines, helping to improve engine performance and efficiency. It is a key component that influences how well your engine breathes. If you notice signs like low compression or ticking noises, replacing this part may be necessary. This valve is one of the important GY6 50cc scooter parts for maintaining your engine's health.
When to Replace It
Signs of wear such as ticking noises or burnt valves indicate that it's time for a replacement. Proper maintenance of the cylinder head, valves, and camshaft is important for your engine's performance.
Specifications
- Valve Diameter: 16mm
- Shaft Diameter: 5mm
- Overall Length: 64mm
Fitment
This exhaust valve is compatible with QMB139 50cc and 49cc engines.
- Various makes/models
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 Cylinder Heads & Valves · Scooter Exhausts & Mufflers · Scooter Parts
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