The McCormick 3678198M91 hydraulic pump is a genuine OEM component designed for optimal performance in Massey Ferguson, Landini, and McCormick agricultural tractors. This essential hydraulic pump ensures efficient power delivery for various hydraulic functions, maintaining the integrity and responsiveness of your machinery's hydraulic system. It is a direct replacement for and interchangeable with OEM part numbers 3678198M92, 3678198M93, 3678198M94, 3678198M95, 3678198M96, 3678198M97, 3678198M98, and 3678198M99, offering broad compatibility across multiple tractor series.