20mm carburetor for QMB139 50cc 4-stroke engines. Includes electric choke & accelerator pump. Fits Baja, Schwinn, Panterra, Vento & more. SKU 151-222. 20mm carburetor for QMB139 50cc 4-stroke engines. Includes electric choke & accelerator pump. Fits Baja, Schwinn, Panterra, Vento & more. SKU 151-222.
Universal Parts PD20J 20mm carburetor with accelerator pump for QMB139 50cc 4-stroke scooter engines Universal Parts PD20J 20mm carburetor with accelerator pump for QMB139 50cc 4-stroke scooter engines
Close-up of 2-pin electric choke connector on Universal Parts PD20J 20mm carburetor for QMB139 50cc engines Close-up of 2-pin electric choke connector on Universal Parts PD20J 20mm carburetor for QMB139 50cc engines
20mm carburetor for QMB139 50cc 4-stroke engines. Includes electric choke & accelerator pump. Fits Baja, Schwinn, Panterra, Vento & more. SKU 151-222.
Universal Parts PD20J 20mm carburetor with accelerator pump for QMB139 50cc 4-stroke scooter engines
Close-up of 2-pin electric choke connector on Universal Parts PD20J 20mm carburetor for QMB139 50cc engines

Universal Parts

Universal Parts 20mm PD20J Carburetor 139QMB 50cc 4-stroke

SKU 151-222
$48.00
Shipping calculated at checkout.
Description

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.

California Prop 65 Warning: www.p65warnings.ca.gov
Product Diagrams
Features
  • Electric choke (2-pin male plug)
  • Accelerator pump
  • 20mm intake bore
  • Main jet #78
  • Idle jet #33
Specifications

Inner Diameter (intake): 20mm | Outer Diameter (air filter mount): 38mm | Outer Diameter (intake side): 28mm | Electric Choke: 2-pin male | Main Jet: #78 | Idle Jet: #33
Model Fitments

QMB139 50cc 4-stroke engines — Baja SC50/SC50-P, Baotian BT50QT-11, Boss, CFMoto, Kymco, Lifan, Panterra Freedom/Fusion/Retro 50cc, Qingqi QM50QT-4G/6V, Schwinn Hope 50/Laguna 50, SUNL, Tank, Vento, Verucci, Wildfire, X-Treme
  • Same day shipping for orders placed before 2PM (CST) M-F
  • 30-day return period on eligible items
  • Flat-rate shipping for orders shipped to the 48 Contiguous United States.
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