HIFROM TM Carb Carburetor for Scooter 50cc Chinese GY6 139QMB Moped 49cc 60cc 1. This ELECTRIC choke carburetor will fit almost all the 4-stroke GY6 50CC-110CC SCOOTERS. 2. Fits models: 50, QM50QT-6V, Various unlisted makes/models, QM50QT-4G, SC50, SC50-P, 50cc, BT50QT-11 , 50cc, 3. Air Filter Intake: 39mm (Outer Diameter) Air Filter Intake: 35mm (Inner Diameter) 4. Intake Manifold side: 28mm (Outer Diameter) Intake Manifold side: 19mm (Inner Diameter) 5. Electric Choke (plug style): 2-pin, male; Accelerator Pump