Carburetor Kit 18mm for GY6 50cc 49cc 4-Stroke Engine | 139QMB 139QMA Scooter

Complete 18mm Carburetor Performance Kit for GY6 50cc 4-Stroke Engines

Restore your scooter's power and reliability. This all-in-one Carburetor Kit is a precision-engineered replacement for the GY6 49cc and 50cc 4-stroke engines. It comes pre-installed with an upgraded #75 Main Jet, which optimizes the fuel-to-air ratio for better starting, smoother idling, and more consistent engine performance compared to standard factory units.

This comprehensive kit includes everything needed for a full intake overhaul, including a high-flow air filter, intake manifold, and throttle cable. Whether you ride a TaoTao, Roketa, Jonway, or Peace, this "plug-and-play" solution is designed to fit most Chinese-made scooters, mopeds, and ATVs.

Product Compatibility

• Engine Type: GY6 4-Stroke 49cc / 50cc (139QMB, 139QMA)
• Vehicle Types: Scooters, Mopeds, ATVs, Go Karts
• Compatible Brands: TaoTao, Roketa, Sunl, Jonway, Jmstar, Tank, Peace, Kazuma, and more.

Key Technical Specifications:

• Intake Side Inner Diameter: 18mm (0.7")
• Air Filter Mount Outer Diameter: 40mm (1.57")
• Throttle Cable Length: 200mm (Moving length: 75mm)
• Jetting: Pre-installed #75 Main Jet for improved performance.
• Package Contents: 1x Carburetor, 1x Air Filter, 1x Intake Manifold, 1x Gasket set, 1x Fuel Hose, 1x Throttle Cable.

Why Choose This Kit?

• Upgraded Performance: The #75 main jet provides a richer fuel mixture, preventing the "lean" condition common in 50cc engines, leading to easier cold starts.
• Complete Replacement: No need to buy parts separately; the included intake manifold and gaskets ensure an airtight seal to prevent vacuum leaks.
• Universal Fit: Engineered to match the mounting points of standard Chinese-made 50cc engines, making it a straightforward DIY project.