This is a new replacement Carburetor Part No: 16100-KAT-913-1 150cc complete carburetor, Includes Electric Choke Inner Diameter (intake side): 24mm, Outer Diameter (intake side): 32mm, Inner Diameter (air filter side): 38mm, Outer Diameter (air filter side): 42mmThis Carburetor fits most makes and models of Scooters and Mopeds with 125cc – 150cc 4-stroke GY6 QMJ/QMI157, QMJ/QMI152 engine. (This is the most popular engine used in scooters.) 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/4Fit Models: QUANTUM 150 150CC GO KART, CARBIDE 150 150CC GO KART, ZIRCON 150 150CC GO KART , HELIX 150 150CC GO KART,High performance Carburetor, meets or exceeds OEM standards, 100% tested before shipping Package include: 1x Carburetor set as images displayThis Carburetor fits most makes