The McCormick 6631634A1 ducting is a genuine OEM replacement part designed for various McCormick X4 Series tractors. This essential component ensures efficient airflow within the machine's systems, maintaining optimal operating conditions and preventing debris ingress. It is compatible with models including X4.20, X4.30, X4.40, X4.50, X4.60, X4.70, X4.35, X4.45, X4.55, X4.65, X4.75, X4.80, X4.90, X4.100, X4.110, and X4.120. Using genuine McCormick parts guarantees precise fitment and long-lasting performance for your agricultural machinery.