The McCormick 3666618M91 is a genuine OEM cover designed for a wide range of McCormick MC series tractors, including MC100, MC105, MC110, MC115, MC120, MC130, MC135, MC80, MC90, and MC95 models. This versatile cover is also compatible with numerous Massey Ferguson 5400, 6400, 7400, 8400 series tractors and Landini Legend, Powerfarm, and Vision series agricultural machinery. It serves as a direct replacement for the original component, ensuring proper fit and function.