The McCormick 3678642M91 fan is a genuine OEM replacement part designed for optimal cooling performance in a wide range of agricultural machinery. This fan features an outer diameter of 400 mm, an inner diameter of 25 mm, and is equipped with 8 durable blades. It ensures efficient airflow for the cooling system of McCormick MC series, Massey Ferguson 5400, 6400, 7400, 8400 series, Landini Landpower, Legend, Powerfarm, Powermondial, Vision series, and Valpadana 9000 series tractors.