The MTD 75111773 Carburetor Kit is an authentic OEM replacement part designed for various MTD outdoor power equipment. This essential kit is responsible for precisely mixing air and fuel, creating the combustible mixture required to power the engine efficiently. It is a direct replacement for previous MTD part numbers 75110657, 75110657A, and 75110657B. This kit is confirmed to fit specific MTD models, including the 31A-2M1E700 snow thrower.