The McCormick 6519602A1 is a genuine air duct designed for optimal airflow within various McCormick X-series tractors, including 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 models. This OEM component ensures proper ventilation and system efficiency. It is also compatible with a range of Case IH Farmall, Maxxum, Puma, Optum, and Vestrum tractor models.