The McCormick 3301422M91 axle shaft is a genuine OEM component designed for specific McCormick X4 and X5 series tractors. This critical part ensures efficient power transmission to the wheels, maintaining optimal performance and durability. It is a direct replacement for original equipment, compatible with models such as the X4.20, X4.30, X4.40, X4.50, X4.60, X4.70, X4.80, X4.90, X5.20, X5.30, X5.40, X5.50, X5.60, X5.70, and X5.80.