The Cab Filter fits Case IH MX80C, MX90C, MX100, MX110, MX120, MX135, MX150, and MX170 tractors, as well as other Case IH models. This unit, with part number 87761808, replaces Case IH OEM numbers 248124A1 and 87761808. It is a single filter designed specifically for Case IH equipment, providing a reliable and high-quality option for maintaining your tractor's performance and efficiency.