The McCormick 6526905A2 duct is a genuine OEM replacement part designed for various McCormick tractor models, including the MC, X6, X7, and X8 series. This essential component ensures proper airflow within the machinery, maintaining optimal system performance. It is compatible with models such as MC100, MC105, MC110, MC115, MC120, MC130, MC135, MC80, MC90, MC95, X6.415, X6.420, X6.430, X6.440, X6.450, X6.460, X7.440, X7.450, X7.460, X7.650, X7.660, X7.670, X7.680, X8.660, X8.670, X8.680, XTX185, XTX200, and XTX215. Verify compatibility with your specific McCormick model before purchase.