The McCormick 6631419A1 is a genuine OEM linkage designed for a wide range of McCormick X-series tractors. This essential component ensures proper function of the tractor's implement attachment system, providing reliable performance and durability. It is compatible with McCormick X4.20, X4.30, X4.35, X4.40, X4.45, X4.50, X4.55, X4.60, X4.70, X4.75, X5.20, X5.30, X5.35, X5.40, X5.45, X5.50, X5.55, X5.60, X5.70, X5.85, X5.95, X5.100, X5.110, X5.120, 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 models.