This is a new Carburetor W/Air Filter Includes Electric Choke Inner Diameter (intake side): 24mm, Outer Diameter (intake side): 32mm, Inner Diameter (air filter side): 38mm, Outer Diameter (air filter side): 49mm.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/49ccFit Models: YERF DOG SPIDERBOX 150CC GX150 GO KARTHigh performance Carburetor, meets or exceeds OEM standards, 100% tested before shipping??Package include: 1x Carburetor set as images display