Introducing the Donaldson primary air filter, a pinnacle of filtration technology designed for heavy-duty engine applications. Its high-efficiency cellulose media ensures optimal performance across a wide range of tasks. The filter is fortified with corrosion-resistant, coated steel liners, providing robust support during operation and enhancing airflow to maximize engine efficiency. Thanks to the innovative Pleatloc feature, uniform pleat spacing is guaranteed, preventing media bunching and ensuring a prolonged service life. This filter meets ISO 5011 standards, a testament to its quality and reliability, and proudly bears the trusted Donaldson brand. With a length of 11.04 inches, inside diameter of 3.61 inches, and outside diameter of 7.65 inches, it's tailored for precision.