The McCormick 6528341M91 is a genuine OEM heating duct designed for various McCormick tractor models, including the MC Series (MC80, MC90, MC95, MC100, MC105, MC115, MC120, MC130, MC135), MTX Series (MTX110, MTX120, MTX125, MTX135, MTX140, MTX150, MTX155, MTX165, MTX175, MTX185, MTX200), and XTX Series (XTX185, XTX200, XTX215). This essential component ensures efficient distribution of warm air within the tractor cabin, maintaining a comfortable operating environment. Manufactured to McCormick's original specifications, it guarantees a precise fit and reliable performance for heating systems.