Voltage Regulator / Rectifier – 139QMB Scooters
Voltage Regulator / Rectifier – 139QMB Scooters
$20.92
10 in stock
*Note: Free shipping to U.S. mainland (excludes AK, HI, and territories)
Orders placed by 1pm EST on weekdays ship the same day.
Product Details
Description
Voltage Regulator / Rectifier – 139QMB Scooters
Compatibility
Fits many 139QMB-based 50cc / 80cc scooter engines. Confirm measurements, connector style, and engine family before ordering.
Compatibility / Fitment
Use the fitment details below to confirm this part matches your scooter before ordering.
- Engine Size: 50cc, 80cc
- Engine Code: 139QMB
Fitment Guide: This compatibility information is based on manufacturer and supplier data. Listed models are common known applications and may not include every compatible scooter. If your scooter has multiple versions or production changes, confirm the correct match before ordering. Check photos, measurements, original part numbers, engine code, model, and related fitment information whenever possible.
Common Fitment Questions
Q: Will this fit a 139QMB engine?
A: This SKU is listed as compatible with 139QMB engine-code fitment. Always compare your original part and scooter details before ordering.
Q: Is this for 50cc scooters?
A: This SKU is listed with 50cc engine-size fitment. Confirm exact model, year, and part style before ordering.
Additional information
| Weight | 0.5 lbs |
|---|---|
| Dimensions | 4 × 4 × 1.5 in |
Replace a failed or overcharging regulator/rectifier on your 139QMB 50cc scooter with this Full Wave Voltage Regulator/Rectifier. A faulty regulator causes battery drain, overcharging, or a complete no-charge condition — this is a direct plug-in replacement using the stock female whip connector. No wiring modifications required.
- Type: Full wave regulator/rectifier
- Connector: Female whip
- Application: 139QMB 50cc 4-stroke scooters
Fits 139QMB (GY50) 50cc 4-stroke scooters with a full wave charging system and female whip connector, including:
- Chicago Scooter Company go.
- Most 139QMB-powered 50cc Chinese scooters with full wave stators
Note: Verify your scooter uses a full wave charging system before ordering. Half wave systems use a different regulator. Check your stator wire count — full wave stators typically have 3 AC output wires.
