The McCormick 3550791M1 PTO shaft is a genuine OEM component designed for various McCormick and Massey Ferguson agricultural tractors. This essential shaft ensures efficient power transfer from the tractor's engine to implements. Measuring approximately 395 mm in length with primary and secondary diameters of 35 mm and 30 mm respectively, it features 6 splines for secure connection. It is compatible with a wide range of models including McCormick CX, MC, MTX, X60, X7, X70, XTX series, and Massey Ferguson 3000, 3100, 3600, 4200, 4300, 5400, 6100, 6200, 6400, 7400, 8100, and 8200 series.