The McCormick 6638443A1 Frame is a genuine OEM structural component designed for McCormick X4 series agricultural tractors. This essential frame provides the foundational support for the tractor's chassis, ensuring stability, durability, and proper alignment of all major components. Manufactured to McCormick's stringent quality standards, it guarantees a precise fit and reliable performance for models including X4.20, X4.30, X4.40, X4.50, X4.60, X4.70, X4.80, X4.90, X4.100, X4.110, and X4.120.