Cvk Main Jet (# 132) for Scooters & Mopeds

Cvk Main Jet for GY6 and 139QMB Scooters

This CVK main jet (#132) is made for 139QMB and GY6 scooters and mopeds that use a CVK carburetor with a 5mm jet inlet. It helps keep the engine running smoothly and efficiently. You'll find it among our carburetor and jet options, a practical pick for riders and DIY mechanics who want to tune their machines.

Compatibility with Various Engine Models

This main jet works with a range of engines, covering 50cc and 80cc units as well as larger sizes. It suits 139QMB-based engines, including those labeled 139QMA, 1P39QMB, YN139QMB, and others. For engines from 125cc to 169cc, it also fits models such as 157QMJ and 161QMK. If your engine code includes "QM" or "FM" and uses a 5mm jet inlet, this main jet is likely a good match for your scooter or moped.

Specifications

• Type: Keihin round-style main jet
• Thread Size: M5x0.80
• Overall Length: 8mm
• Fits: 139QMB-based 50cc/80cc engines and 157QMJ-based 125cc/150cc/169cc engines with a 5mm main jet slot CVK

Fitment

Fits:

• 139QMB-based 50cc/80cc engines (engine codes 139QMA, 139QMB, 1P39QMB, 1P39QMA-2, YN139QMB, JJ1P39QMB, 139FMA-2, BD1P39QMB, BN139QMB, 147QMD, other QMA and QMB models)
• 157QMJ-based 125cc/150cc/169cc engines (engine codes 157QMJ, 161QMK, 152QMI, 1P61QMK, YN1P57QMJ, 1P52FMI, 154FMI, JJ157QMJ, 1P57QMJ, BN157QMJ, BN161QMK-A, other QMJ, QMK and QMI models)
• Engine codes containing QM or FM with a 5mm main jet slot CVK carburetor

How to choose: Check that your CVK carburetor has a 5mm main jet slot, then select a jet with M5x0.80 threading and an 8mm overall length.

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