The McCormick 6605468A1 is an OEM cab heater duct designed for various McCormick X4 series tractors. This genuine replacement part ensures efficient air distribution within the cab's heating system, maintaining optimal climate control and operator comfort. It is compatible with a wide range of X4 models, including X4.20, X4.30, X4.40, X4.50, X4.60, X4.70, X4.35, X4.45, X4.55, X4.65, X4.75, X4.060, X4.070, X4.080, X4.090, X4.100, X4.110, X4.120, X4.130, X4.140, X4.150, X4.160, X4.170, X4.180, X4.190, X4.200, X4.210, X4.220, X4.230, X4.240, X4.250, X4.260, X4.270, X4.280, X4.290, X4.300, X4.310, X4.320, X4.330, X4.340, X4.350, X4.360, X4.370, X4.380, X4.390, X4.400, X4.410, X4.420, X4.430, X4.440, X4.450, X4.460, X4.470, X4.480, X4.490, X4.500, X4.510, X4.520, X4.530, X4.540, X4.550, X4.560, X4.570, X4.580, X4.590, X4.600, X4.610, X4.620, X4.630, X4.640, X4.650, X4.660, X4.670, X4.680, X4.690, X4.700, X4.710, X4.720, X4.730, X4.740, X4.750, X4.760, X4.770, X4.780, X4.790, X4.800, X4.810, X4.820, X4.830, X4.840, X4.850, X4.860, X4.870, X4.880, X4.890, X4.900, X4.910, X4.920, X4.930, X4.940, X4.950, X4.960, X4.970, X4.980, X4.990, and X4.1000 models. Replace your worn or damaged duct with this original McCormick part for reliable performance.