The Case-IH AF4594 is a genuine OEM primary air filter designed to provide superior engine protection for a wide range of Case-IH agricultural machinery. This filter, now commonly cross-referenced as Case-IH part number 84166687, ensures clean air intake, preventing harmful contaminants from reaching critical engine components. With an outer diameter of 165.1 mm, an inner diameter of 85.09 mm, and a length of 284.988 mm, it offers a precise fit and reliable performance. It is suitable for numerous Case-IH Farmall, JX, and Maxxum series tractors, including models like Farmall 100C, JX1070C, and Maxxum 120, ensuring optimal engine efficiency and longevity.