The McCormick 6528084M91 master cylinder is a genuine OEM component designed for reliable brake system operation in a wide range of McCormick and Massey Ferguson tractors. This essential part ensures proper hydraulic pressure for braking, maintaining safety and performance. With confirmed fitment across numerous CX, MC, MTX series McCormick tractors and a vast array of Massey Ferguson models, it serves as a direct replacement for part number 353989X1. Built to OEM specifications, it guarantees compatibility and durability.