VideoPUP(TM) Carburetor Carb for Scooter 50cc Chinese GY6 139QMB Moped 49cc 60cc SUNL BAJA ATV Air Filter Intake: 39mm (Outer Diameter) Air Filter Intake: 35mm (Inner Diameter) Intake Manifold side: 28mm (Outer Diameter) Intake Manifold side: 19mm (Inner Diameter) Fit almost all the 4-stroke GY6 50CC-110CC SCOOTERS. Electric Choke (plug style): 2-pin, male; Accelerator Pump. We are professional carburetor manufacturer and seller Free Risk Guarantee: 100% full refund or replacement if you are not satisfied