The McCormick 6645459A1 Duct is a genuine OEM replacement part designed for various McCormick agricultural tractors. This essential component ensures proper airflow within the machine's system, maintaining optimal operating conditions. It is compatible with a wide range of McCormick models, including CX Series (CX100, CX105, CX110, CX50, CX60, CX70, CX75, CX80, CX85, CX90, CX95), MC Series (MC100, MC105, MC110, MC115, MC120, MC130, MC135, MC80, MC90, MC95), MTX Series (MTX110, MTX120, MTX125, MTX135, MTX140, MTX150, MTX155, MTX165, MTX175, MTX185, MTX200), X50 Series (X50.20, X50.30, X50.40, X50.50), X6 Series (X6.420, X6.430, X6.440), X7 Series (X7.440, X7.450, X7.460, X7.650, X7.660, X7.670, X7.680, X7.690), X7.P Series (X7.P670, X7.P680, X7.P690), X70 Series (X70.40, X70.50, X70.60, X70.70), and X8 Series (X8.660, X8.670, X8.680).