GY6 49cc 50cc 125cc 150cc 8-Coil 4-Wire AC Stator for 139QMB 157QMJ

Product Overview

Replace a weak, burned, or failed stator with this 8-coil 4-wire AC magneto stator, designed for select GY6 engine platforms commonly used on scooters, mopeds, ATVs, go karts, buggies, and small powersports vehicles.

This stator is commonly used on GY6 49cc, 50cc, 110cc, 125cc, and 150cc engines, including 139QMB, 147QMD, 152QMI, and 157QMJ engine codes. It helps generate electrical power for the ignition and charging system while the engine is running.

If your GY6 scooter or ATV has weak spark, poor charging, dim lights, unstable voltage, or stator-related electrical failure, replacing the stator may help restore normal electrical performance.

Because GY6 engines use different stator types, this part must be matched by AC/DC system type, coil count, wire count, plug layout, trigger coil position, and physical dimensions before ordering.

Product Compatibility

Engine / Vehicle Type	Common Application	Fitment Notes
GY6 49cc / 50cc	Scooters, mopeds, small ATVs	Commonly used with 139QMB engines; confirm AC 8-coil 4-wire layout
GY6 110cc	ATVs, go karts, small powersports vehicles	Fits only if original stator dimensions and connector match
GY6 125cc	Scooters, mopeds, ATVs, go karts	Commonly used with 152QMI engines; check plug layout before ordering
GY6 150cc	Scooters, mopeds, ATVs, go karts	Commonly used with 157QMJ engines; must match 8-coil 4-wire AC stator
139QMB	49cc / 50cc GY6-style engine	Verify AC/DC type, connector, and mounting hole spacing
147QMD	Small GY6-style engine	Fitment depends on original stator and wiring system
152QMI	125cc GY6-style engine	Confirm 8-coil 4-wire AC stator configuration
157QMJ	150cc GY6-style engine	Confirm wire count, trigger position, and outer diameter

Important Fitment Note:
This part is not selected by engine size alone. GY6 engines may use 6-coil, 8-coil, 11-coil, 4-wire, 5-wire, AC, or DC stator designs. Please compare your original stator carefully before ordering.

Specifications

Specification	Details
Product Type	Magneto Stator / Generator Coil
Coil Count	8 Coils / 8 Poles
Wire Count	4 Wire
Electrical Type	AC
Inner Diameter	29mm / 1.1"
Outer Diameter	88mm / 3.5"
Iron Core Height	11mm / 0.43"
Mounting Hole Distance	40mm / 1.6"
Thickness	28mm / 1.1"
Trigger Mounting Hole Distance	33mm / 1.3"
Trigger Mounting Hole Diameter	5mm / 0.20"
Compatible Engine Codes	139QMB, 147QMD, 152QMI, 157QMJ
Application	Scooter / Moped / ATV / Go Kart Charging & Ignition System
Fitment Type	Universal GY6 Style, Match by Size and Wiring

Key Features

• Designed for select GY6 49cc, 50cc, 110cc, 125cc, and 150cc engines
• Fits many scooters, mopeds, ATVs, go karts, quads, and small powersports vehicles
• Compatible with select 139QMB, 147QMD, 152QMI, and 157QMJ engine platforms
• 8-coil 4-wire AC stator helps support ignition and charging system output
• Helps address weak spark, poor charging, dim lights, unstable voltage, or stator failure
• Compact 88mm outer diameter design for matching GY6 stator applications
• Original wire count, plug layout, trigger coil position, and AC/DC type must be checked before installation

OEM Cross Reference

No confirmed OEM part number is available for this universal GY6-style stator.

Please do not order this part by engine size or vehicle type alone. Match your original stator by coil count, wire count, AC/DC system type, connector shape, trigger coil position, inner diameter, outer diameter, and mounting hole distance before purchase.