The McCormick 3691882M91 is a genuine OEM hydraulic pump designed for various McCormick CX and MC series agricultural tractors. This essential component ensures efficient and reliable hydraulic system operation, providing power for steering, implements, and other hydraulic functions. It is a direct replacement part, engineered to meet original equipment specifications for optimal fit and performance in models such as CX70, CX75, CX80, CX85, CX90, CX95, CX100, CX105, CX110, MC80, MC90, MC95, MC100, MC105, MC115, MC120, MC130, and MC135.