Intake Manifold side: 19mm (Outer Diameter)Intake Manifold side: 28mm (Outer Diameter)Air Filter Intake: 35mm (Outer Diameter)Air Filter Intake: 39mm (Outer Diameter)This Electronic choke carburetor will fit almost all the 4-stroke GY6 50CC ScootersFeatures:This Electronic choke carburetor will fit almost all the 4-stroke GY6 50CC ScootersAir Filter Intake: 39mm (Outer Diameter)Air Filter Intake: 35mm (Outer Diameter)Intake Manifold side: 28mm (Outer Diameter)Intake Manifold side: 19mm (Outer Diameter)Electric Choke (plug style): 2-pin, maleFits models: Gator 50, JCL, Qingqi QM50QT-6V, Vento, Various unlisted makes/models, Tank, Wildfire, Boss, Qingqi QM50QT-4G, Baja SC50, Baja SC50-P, Panterra Retro 50cc, Panterra Freedom 50cc, CFMoto, Schwinn Hope 50, Kymco, Baotian BT50QT-11 , Panterra Fusion 50cc, X-Treme, Lifan, Verucci, QingqiPackage includes:1 x Scooter Moped Carburetor Carb