This is a genuine McCormick 6671455A1 duct, designed for various McCormick X-series tractors. It ensures proper airflow within the machine's system, maintaining optimal performance and component longevity. This OEM part guarantees precise fitment and durability for models including X4.20, X4.30, X4.40, X4.50, X4.60, X5.20, X5.30, X5.40, X5.50, X5.55, X5.60, X5.70, X5.85, X5.90, X6.420, X6.430, X6.440, X6.460, X7.440, X7.450, X7.460, X7.650, X7.660, X7.670, X7.680, X7.690, X8.660, X8.670, and X8.680.