Blue Line Carburetor (CVK,19mm); QMB139


Regular price $44.99

This is a high quality 19mm CVK replacement carburetor for all GY6 4-stroke 139QMB 49/50cc Chinese engines. This carburetor is fitted with an 85 main jet. It's better than stock and boasts a larger venturi and an accelerator pump, which will frequently eliminate hesitation when you open her up.


- Accelerator pump

- Electric choke (2-pin male plug),

- Fuel and drain lines,

- Fuel filter

- Pre-tuned jetting for most applications.

- Quick-drain valve


This carburetor is used on Baja, JMstar, Jonway, Lance, NST, Peace, Roketa, Sunl, Tank, TNG, Vento, VIP and many others.

  • Auto choke
  • Accelerator pump
  • Remote float bowl
  • Venturi: 19mm
  • Airbox side: ID 29mm, OD 39mm
  • Engine side: ID 19mm, OD 28mm


  • Main: 85 (4mm thread PB)
  • Pilot: 35 (6mm thread CV)
  • Needle: Non-adjustable GY50 A4
  • Compatible jets-
  • Main: JETKH1
  • Pilot: CV style