This is a genuine McCormick 3544947M91 armrest, designed for a wide range of McCormick X4, X5, X6, X7, and X8 series tractors. It provides essential operator comfort and support, crucial for long hours of operation. As an original equipment manufacturer (OEM) part, it guarantees precise fitment, durability, and performance, maintaining the integrity and functionality of your McCormick machinery. Replace worn or damaged armrests with this authentic part to restore ergonomic control and enhance the operator experience.