19mm Replacement Carburetor (GY6 50cc 139QMB / 139QMA)

This 19mm replacement carburetor is designed for GY6 50cc 139QMB / 139QMA engines and is also suitable for several 80cc 4-stroke configurations.

It comes ready to install, equipped with an electric choke (E-Choke) and pre-installed jets. Manufactured to OEM carburetor specifications, it is an excellent solution for replacing a worn or defective carburetor.

Thanks to its 19mm diameter, it offers improved airflow compared to an original carburetor, making it ideal for lightly tuned engines or larger displacement kits.

Technical specifications:

• Type: Diaphragm carburetor
• Diameter: 19 mm
• Main jet: #85 (4 mm)
• Idle jet: #33
• Choke: Electric (E-Choke)
• Intake manifold side diameter: 28 mm
• Air filter side diameter: 38 mm

Common terms:
GY6 carburetor, 19mm carb, replacement carb, scooter carb.