PRO BAT GY6 Stator Magneto 6-Coil 5-Wire for 50cc–150cc Engines — 83mm OD, Plug-Ready

If your GY6-powered scooter, ATV, go-kart or dune buggy has a failed stator or inconsistent charging, this PRO BAT 6-coil, 5-wire stator provides a straightforward swap. Built to match common GY6 configurations, it restores magneto output for lighting, ignition and charging while maintaining the compact footprint required by many CVT engines.

How does this stator restore electrical function on a GY6 engine?

The stator generates alternating current as the flywheel spins, providing power for the ignition, lights and charging circuits. This PRO BAT unit has six coil poles arranged to match standard GY6 alternator timing and a five-wire female plug that connects to the wiring harness.

• Six discrete coils deliver AC output for multiple circuits
• Five-wire female connector simplifies harness connection
• Designed for compatibility with common GY6 CVT engines

Which engines and vehicles will this stator fit?

It fits most small-displacement vehicles built around the GY6 family of engines, including 50cc, 125cc and 150cc variants. The part works with 139QMA, 139QMB, 152QMI and 157QMJ engine types and is compatible with many brand models that use GY6 platforms.

• Compatible engines: GY6 139QMA/139QMB/152QMI/157QMJ
• Typical vehicles: scooters, mopeds, ATVs, go-karts, UTVs and dune buggies
• Fits popular manufacturers using GY6: Zongshen, Lifan, Taotao, SYM and others

What are the key physical and electrical specifications?

The stator measures roughly 83 mm overall diameter, with a 29 mm inner bore and mounting hole centers about 42 mm apart—dimensions that match many GY6 housings. It is a new AC stator assembly sold with two mounting screws and arrives as a 5-wire plug-ready unit.

• Overall diameter: ~83 mm (3.26")
• Inner diameter: ~29 mm (1.14")
• Mounting hole center-to-center: ~42 mm (1.65")
• Includes: 1 stator assembly + 2 screws

How easy is installation and what should I check before buying?

Installation is straightforward for anyone comfortable removing the flywheel and housing on a GY6 engine; the five-wire female connector plugs into the vehicle harness. Before purchase, confirm your engine model and measure the stator housing to match the listed diameters and mounting spacing.

• Requires flywheel removal and basic tools for stator replacement
• Verify engine model (139QMA/139QMB/152QMI/157QMJ) and connector style
• Compare the listed diameters and hole spacing to your vehicle’s stator plate

Who is this for? This PRO BAT stator is intended for DIY mechanics, repair shops and owners of GY6-driven scooters, ATVs, go-karts and similar light vehicles who need a reliable, OEM-style replacement alternator stator. It’s suitable when the original stator has failed, when charging is intermittent, or when replacing damaged wiring, and it suits most popular GY6 brand installations that match the listed measurements.