The McCormick 3554340M91 is a genuine OEM hydraulic pump engineered to deliver reliable and precise hydraulic performance for McCormick CX series tractors. This essential component ensures optimal fluid power for various agricultural operations. It is also cross-compatible with a broad range of Landini Legend series, Massey Ferguson 3000, 4000, 5000, 6000, 8000 series, and Valtra/Valmet 6000, 8000 series tractors, making it a versatile replacement part. This hydraulic pump is identified by its original part number 3554340M91 and several superseded or equivalent OEM numbers.