LEFT Side Choke (with rear facing intake) Manual Choke Engine Side Opening: 27mm Bolt Hole Spacing (Engine Side): 48mm Air Filter Mount: 37mm 27mm Carburetor with Manual Choke for 4-stroke Honda style engines commonly found on motorcycles, dirt bikes, ATVs, dune buggy/karts, mopeds, mini-choppers, super pocket bikes and many more. Carburetor for "Honda Style" 4-stroke air cooled gas engines. Compatible with a variety of scooter, ATV, and dirt bike models. Typically used on Honda style single cylinder engine sizes 50cc, 70cc, 90cc, 110cc, 125cc and 150cc, but occasionally found on larger size engines. supported the Brands of BAOTIAN, BASHAN, BENZHOU, CFMOTOR, CHARMING, DAYANG, DINLI, FUXIN, GEELY, GILERA, HANGLONG, HAOJIN, HAOJUE, HISUN, HONGZHOU, HUATIAN, JIAJUE, JIANSHE, JINLUN, JMSTAR, JONWAY, KAITONG, KEEWAY, KINROAD, KYMCO, LIFAN, LINGBEN, LINGTIAN, LINHAI, LINTEX, LONCIN, LONGJIA, MAWI, MEIDUO, MOTORRO, PIAGGIO, QINGQI, RHON, RIEJU, SACHS, SHINERAY, SKYGO, SUKIDA, TAOTAO, VESPA, VONROAD, WANGYE, WONJAN, XINGYUE, XINLING, XINTIAN, YIBEN, YINGANG, ZHONGYU, ZNEN, ZONGSHEN, etc.