This is a new repkacement GY6 150cc Scooter Carburetor with Electric Choke Inner Diameter (intake side): 24mm; Outer Diameter (intake side): 32mm; Inner Diameter (air filter side): 38mm; Outer Diameter (air filter side): 42mm.This Carburetor fits most makes and models of Scooters and Mopeds with 125cc – 150cc 4-stroke GY6 QMJ/QMI157, QMJ/QMI152 engine. Fits many models and makes of Scooters, ATVs, Mopeds and Go Karts. , Baja, Kazuma, Carroll Stream Eagle, Panterra, Kymco, Redcat Tank Giovanni Aimex Jackel Wildfire Xtreme Seaseng Qlink Yiben Jonway Jmstar, Vento, Tng. and Various unlisted makes/models. QMB139 50cc/49ccInstallation: Easy installation, No Installation Instruction Features: 1)Good at mixing fuel and air; 2) Keep engine running smoothly; 3)Prevent engine from lack of oil or oil spilling when working; 4) Avoid wasting of oil, to some extent; 5)High class quality and very durable,Good Working Condition and Easy to Install; 6) Low cost, Competitive price; 7) Low emission,envir