The Case IH AF401 is a genuine OEM primary air filter designed to provide superior engine protection for a wide range of Case IH agricultural and construction equipment. This high-quality filter ensures optimal airflow while effectively capturing contaminants, extending engine life and maintaining peak performance. With an outer diameter of 254 mm, an inner diameter of 127 mm, and a length of 305 mm, it is a critical component for routine maintenance on models including the 7100, 7200, 8900, MX, and STX series tractors.