This genuine McCormick part number 3686558M91 is an air ducting component designed for various agricultural machinery. It ensures proper airflow within the system, crucial for engine or cabin ventilation. This ducting is compatible with McCormick CX, MC, MTX, and XTX series tractors. It also fits a range of Massey Ferguson 6400, 7400, and 8400 series tractors, as well as Landini Legend, Landpower, and Powermondial models. The ducting measures 1000 mm in length with a diameter of 70 mm and weighs 0.3 kg.