This 24mm/38mm electric choke carburetor is most commonly used for (and not limited to) GY6 engines, primarily 150cc GY6 engines. Used on 150cc ATVs, scooters, mopeds and to a lesser degree automatic go karts, buggies and automatic 2-wheelers. 150cc and 125cc GY6 parts are largely identical. Very similar to part number 80A8240 (except 80A8240 has a 29.5cm mountable fuel drain extension). This is a universally implemented part from all the big companies: Lifan, Loncin, Zhongshen, Buyang, Hisun, Kangdi, Linhai, Liangzi, CF Moto and many others.