GY6 50cc (139QMB) Engines 18.5mm Carburetor V.3

18.5mm Carburetor for 139QMB 50cc Engines

The V.3 is an 18.5mm slide-type carburetor built for 139QMB 50cc 4-stroke engines. It suits riders who want to swap out or upgrade the carburetor already on their machine. As one of the GY6 50cc scooter parts, it aims to sharpen throttle response and help the engine start reliably when cold, which makes it a practical option for a range of scooters and mopeds. Its sturdy build and careful machining are meant to deliver dependable operation on the road.

Construction and Features

The body is made from die-cast aluminum, which gives it good strength and durability. An electric choke is fitted, helping the engine run consistently during cold starts. The accelerator pump also contributes to quicker throttle response, so the ride feels smoother and more responsive.

Installation and Compatibility

The V.3 is intended as a direct-fit replacement for several scooters and mopeds, and it mounts without much fuss. Many riders fit a new carburetor to get better fuel economy and stronger engine performance.

Specifications

• Inner Diameter: 18.5mm
• Air Filter Connection: 39mm
• Intake Connection: 27.5mm
• Main Jet: 85
• Idle Jet: 34
• OEM Part Number: NK200.01
• Fits: 139QMB 50cc 4-stroke scooters and mopeds: Baja SC50, Jonway, Kymco, Peugeot, Piaggio, Roketa, Vespa, ZNEN

Fitment

Fits:

• Baja SC50
• Jonway Beta 50, YY50 QT-6
• Kymco People 50, Agility 50, Yager 50
• Peugeot 50cc 139QMB models
• Piaggio 50cc 139QMB models
• Roketa 50cc 139QMB models
• Vespa 50cc 139QMB models
• ZNEN 50cc 139QMB models
• Various 139QMB-powered 50cc scooters and mopeds

How to choose: Use this carburetor when your engine is a 139QMB 50cc 4-stroke, and confirm the carburetor inner diameter is 18.5mm.

Shop more: GY6 50cc Scooter Parts (139QMB) · GY6 Scooter Parts · Scooter Carburetors & Jets · Scooter Engines & Engine Parts · Scooter Parts