Introducing the Donaldson primary air filter, a trusted companion for heavy-duty engine applications. Engineered with high-efficiency cellulose media, it excels across a diverse range of operational conditions. The filter's corrosion-resistant, coated steel liners provide vital support, optimizing airflow for enhanced performance. With the innovative Pleatloc feature, uniform pleat spacing is maintained, preventing media bunching and extending the filter's service life. Measuring at 10 inches in length, with an inside diameter of 2.48 inches and an outside diameter of 4.06 inches, this filter adheres to ISO 5011 standards, ensuring a superior standard of quality.