The McCormick 3660929M1 is a genuine OEM transmission gear, an essential component for maintaining optimal gearbox performance and power transmission in agricultural machinery. This robust gear features 27 teeth and is specifically designed for various McCormick CX series tractors, including models like CX75, CX85, CX95, CX105, and CX110. It is also cross-referenced with equivalent part numbers for Landini Powerfarm series and Massey Ferguson 5400 series tractors, ensuring broad compatibility and reliable operation.