The Case IH AF4991 is a genuine OEM air filter designed to provide superior engine protection for a wide range of Case IH agricultural machinery, including combines, tractors, cotton pickers, and windrowers. This primary air filter effectively removes dust, dirt, and debris from the intake air, preventing premature engine wear and maintaining peak performance. With an outer diameter of 330 mm, an inner diameter of 216 mm, and a length of 432 mm, it ensures a precise fit and reliable filtration for compatible Case IH models.