Fitment: The 139QMB carburetor used in 49cc and 50cc 4-stroke scooters like Taotao 80cc PD18J scooters, mopeds, ATV's, go-karts, quads, and Kymco vehicles. It is also replacement for most Chinese-made scooters and ATVs, Replacement for TAOTAO, Replacement for JONWAY, Replacement for JMSTAR, Replacement for ROKETA, Replacement for SUNL, Replacement for Dongfang and more. Material: Made with 4-stroke components, this carburetor is designed for optimal fuel-to-air ratio, improving starting, idling, and overall performance. It features an upgraded jet and electric choke for enhanced performance. Easy Installation: This carburetor is easy to install and is plug-and-play. It is recommended to take pictures and notes before uninstalling the current carburetor for proper reinstallation of vacuum and fuel lines. Improved Performance: Expect improved acceleration, throttle response, and overall performance for your GY6 50CC engine with this reliable carburetor. Package including: 1 x Carburetor; 1 x 50cc Intake Manifold; 1 x Air Filter; 1 x Spark Plug; 1 x Cable; 1 x Fuel Filter; 2 x Throttle Grips and other accessories as pictures shown. Product Dimensions:Intake Manifold Side: Inner Diameter 18mm, Outer Diameter 28mm Air Filter Side: Inner Diameter 35mm, Outer Diameter 39mm. Fitment:

• Replacement for 139QMB carburetors used in 49cc and 50cc 4-stroke scooters
• Replacement for Taotao 80cc PD18J scooters, mopeds, ATV's, go-karts, quads,  and Kymco vehicles
• Replacement for Chinese-made vehicles
• Replacement for TAOTAO
• Replacement for JONWAY
• Replacement for JMSTAR
• Replacement for ROKETA
• Replacement for SUNL
• Replacement for TANK
• Replacement for PEACE
• Replacement for Dongfang
• Replacement for Kazuma and more

Jet Sizes:

• Includes a 75 main jet and a 33mm idle jet for efficient fuel delivery.

Dimensions:

• ID (Intake Side): 18mm
• Outer Diameter: 39mm

Choke:

• Equipped with an electric choke featuring a 2-pin, male plug for improved starting and performance.

Pack including:

• 1 x Carburetor
• 1 x 50cc Intake Manifold
• 1 x Air Filter
• 1 x Spark Plug
• 1 x Fuel Filter
• 1 x Cable
• 2 x Throttle Grips
• And other accessories as pictures shown

Note:

• Please check the fitment information before purchase to ensure that the purchased parts are suitable for your equipment.
• If you have any questions before or after the purchase, please feel free to send us an email, we will try our best to provide you with good suggestions.