This genuine McCormick 6521887M91 hydraulic pump is designed for McCormick CX series tractors, including models CX50, CX60, CX70, CX75, CX80, CX85, CX90, CX95, CX100, CX105, and CX110. It is also compatible with various Landini, Massey Ferguson, and Valtra tractor models. This essential component ensures reliable and efficient operation of your tractor's hydraulic system, providing consistent power for implements and steering. Weighing 5.00 kg, it is a direct replacement for OEM part numbers 3780365M91 and 3386000M91.