The McCormick 4207639M2 is a genuine OEM transmission gear designed for McCormick CX and MC series tractors, including models such as CX105, CX110, CX115, MC105, MC115, MC120, and MC135. This essential component ensures smooth power transfer within the transmission system. It features 30 teeth and weighs approximately 0.85 kg. This part is also recognized as Massey Ferguson equivalent 3780362M1, ensuring broad compatibility across related agricultural machinery.