Description
Cvk Main Jet (#105) for 139QMB and GY6 Scooters
This Cvk Main Jet (#105) is designed for use in 139QMB and GY6 engines, making it a reliable choice for scooter and moped enthusiasts. It fits most CVK carburetors with a 5mm main jet opening, ensuring compatibility with a wide range of vehicles. As one of the scooter carburetors & jets, it plays a key role in optimizing engine performance by regulating fuel flow. Perfect for riders looking to improve their scooter's capabilities.
Compatibility Overview
This main jet is compatible with various engine codes for both 50cc and 125cc-169cc scooters. It works well with engines based on the 139QMB and 157QMJ models, making it versatile for different setups. If your engine's identification includes "QM" or "FM," and it operates a CVK carburetor with a 5mm jet opening, this jet should work effectively for your scooter.
Why You Might Need to Replace Your Main Jet
Specifications
- Type: Keihin round-style main jet
- Thread Size: M5x0.80
- Overall Length: 8mm
Fitment
This main jet fits a variety of engines, specifically:
- 139QMB (including 139QMA, 1P39QMB, 1P39QMA-2)
- YN139QMB (including JJ1P39QMB, 139FMA-2, BD1P39QMB)
- BN139QMB (147QMD and other QMA/QMB models)
- 157QMJ (including 161QMK, 152QMI, 1P61QMK)
- YN1P57QMJ (1P52FMI, 154FMI, JJ157QMJ)
- 1P57QMJ (BN157QMJ, BN161QMK-A, other QMJ/QMK/QMI 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: Scooter Carburetors & Jets · Scooter Parts
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