The McCormick 3531532M91 is a genuine 12-volt headlight assembly, often functioning as a work light, designed for various McCormick C, CX, and MC series agricultural tractors. This essential lighting component provides reliable illumination, enhancing visibility during operation. It features an H4 bulb type and measures 170mm in length, 100mm in width, and 100mm in height, serving as a direct replacement for the original equipment and ensuring proper fit and function.