The Case IH 4638173 fan is an authentic OEM replacement part engineered for a wide range of Case IH agricultural machinery. This fan is crucial for maintaining the efficiency of the cooling system in models such as 1400, 1600, 2100, 2300, and 2500 series combines, 1800, 2000, and 2100 series cotton pickers, 782 forage harvesters, and 9100, 9200, and 9300 series tractors. It measures approximately 355.6 mm in length, 355.6 mm in width, and 50.8 mm in height, with a weight of about 0.45 kg, providing reliable and precise fitment.