Authentic McCormick A188434 gear, designed for precise fit and optimal performance in various International Harvester and McCormick tractor models including 354, 374, 384, 434, 444, 454, 474, 475, 574, 674, 2400, and 2500 series. This genuine replacement part ensures reliable operation and durability for critical machinery systems. With dimensions of 50.8 mm length, 50.8 mm width, and 12.7 mm height, and a weight of 0.0907 kg, it provides a direct fit.