This genuine McCormick 3555977M1 gear is a critical component for the transmission systems of various Massey Ferguson, Landini, and McCormick tractor models. Engineered for durability and precise fit, it ensures reliable power transfer and operational efficiency. Compatible with a wide range of series including MF 100, 200, 300, 500, 600, 1000, 2000, 3000, 4200, 4300, 5400, 6100, 6200, 8100, 8200 Series; Landini 5000, 6000, 7000, 8000, 9000, 10000, 12500, 13000, 14500, 16000, 16500, 19000 Series; and McCormick C, CX, MC, MTX, XTX, ZTX Series tractors.