Compatible with: 2-stroke models, 47/49mmcc: Type MT-A1. Most commonly used 2-stroke carburetor. Fits pocket bikes, dirtbikes and ATVs. OEM stock replacement part. 13mm diameter opening on engine/intake side. If you are tired of constantly adjusting your original stock carburetor or having fuel issues this carburetor is your solution. Sold with carb.: air filter, intake and intake gasket.