The McCormick T235021722 is a genuine OEM gear, also known as a pinion, specifically designed for a wide range of McCormick tractor models. This essential component is compatible with X4.20, X4.30, X4.40, X4.50, X4.60, X5.20, X5.30, X5.40, X5.50, X6.420, X6.430, X6.440, X7.440, X7.450, X7.460, X7.650, X7.660, X7.670, X7.680, X8.660, X8.670, and X8.680 series tractors. Manufactured to McCormick's rigorous quality standards, this gear ensures precise power transmission and long-lasting durability in demanding agricultural and industrial environments.