The McCormick 6510071M91 Duct is a genuine OEM replacement part designed for various McCormick MC, MTX, and X6 series agricultural tractors. This essential component ensures proper airflow within the machine's systems, maintaining operational efficiency and preventing issues caused by restricted ventilation. Manufactured to McCormick's stringent quality standards, this duct provides a precise fit and reliable performance, crucial for the longevity and functionality of your equipment. It is compatible with models including MC100, MC105, MC110, MC115, MC120, MC130, MC135, MTX110, MTX120, MTX125, MTX135, MTX140, MTX150, MTX155, MTX165, MTX175, MTX185, MTX200, X6.420, X6.430, and X6.440.