Universal Parts 20mm PD20J Carburetor 139QMB 50cc 4-stroke
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The Universal Parts PD20J is a Type-2 carburetor with a 20mm intake designed for 50cc 4-stroke 139QMB engines. It comes equipped with an electric choke and accelerator pump, making it the go-to upgrade for QMB139 scooters running a 70cc+ big bore kit or engines that came stock with larger displacement.
Key Features
- Electric choke (2-pin male plug)
- Accelerator pump for improved throttle response
- 20mm intake bore for increased airflow
- Main jet: #78 | Idle jet: #33
Specifications
- Inner Diameter (intake): 20mm
- Outer Diameter (air filter mount): 38mm
- Outer Diameter (intake side): 28mm
- Electric Choke plug: 2-pin, male
- Main Jet Size: #78
- Idle Jet Size: #33
Compatibility
Fits QMB139 50cc 4-stroke engines, including the following makes and models:
| Make | Model |
|---|---|
| Baja | SC50, SC50-P |
| Baotian | BT50QT-11 |
| Boss | 50cc QMB139 |
| CFMoto | 50cc QMB139 |
| Kymco | 50cc QMB139 |
| Lifan | 50cc QMB139 |
| Panterra | Freedom 50cc, Fusion 50cc, Retro 50cc |
| Qingqi | QM50QT-4G, QM50QT-6V |
| Schwinn | Hope 50, Laguna 50 |
| SUNL | 50cc QMB139 |
| Tank | 50cc QMB139 |
| Vento | 50cc QMB139 |
| Verucci | 50cc QMB139 |
| Wildfire | 50cc QMB139 |
| X-Treme | 50cc QMB139 |
| Various | Unlisted QMB139 makes/models |
Note: This carburetor is typically used on QMB139 engines with 70cc+ displacement or on scooters with a big bore kit installed.
This product is not intended for use on public roads or land.
Shipping information
Orders are prepared as quickly as possible. Delivery times and shipping costs are calculated at checkout based on the destination and items ordered.
Returns & warranty
Please verify fitment and part number before ordering. Contact Thrifty Scooters promptly if an item arrives damaged or incorrect.