Blue Line 19mm CVK Carburetor w/ Accel Pump | 139QMB
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Original price
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Upgrade your 139QMB-powered 50cc scooter's fuel delivery with this Blue Line 19mm CVK replacement carburetor. The larger-than-stock 19mm venturi improves airflow and fuel atomization, while the mechanical float-bowl accelerator pump eliminates the bog and hesitation common when opening the throttle quickly. Fitted with an #85 main jet and electric choke. A direct-fit replacement for all 139QMB Chinese engines.
- Venturi: 19mm
- Electric choke: 2-pin male plug style
- Accelerator pump: mechanical float-bowl type
- Airbox side: ID 29mm / OD 38mm
- Engine side: ID 19mm / OD 28mm
- Main jet: #85 (4mm thread PB style)
- Pilot jet: #35 (6mm thread CV style)
- Needle: non-adjustable GY50 A4
- Compatible jets — main: JETKH1 | pilot: CV style | idle: #34
- 139QMA, 139QMB, 1P39QMB, 1P39QMA-2, YN139QMB, JJ1P39QMB, 139FMA-2, BD1P39QMB, BN139QMB, 147QMD
- Other QMA and QMB variants — if your engine code includes "QM" or "FM" this carb is compatible
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