Experience top-tier filtration with the Donaldson primary air filter. Its high-efficiency cellulose media is engineered to excel in a diverse range of heavy-duty engine applications. The filter is fortified with corrosion-resistant, coated steel liners that provide robust support during operation, optimizing airflow for enhanced performance. The innovative Pleatloc feature ensures consistent pleat spacing, preventing media bunching and extending the filter's service life. This filter meets ISO 5011 standards and boasts a length of 14.09 inches, an inside diameter of 3.57 inches, and an outside diameter of 7.92 inches. Elevate your engine's longevity and efficiency with Donaldson.