Enhance your heavy-duty engine's performance with the Donaldson primary air filter. Its high-efficiency cellulose media ensures outstanding filtration across a wide range of applications. The filter features corrosion-resistant, coated steel liners that provide robust support to the media, maximizing airflow for optimal engine operation. The Pleatloc feature maintains uniform pleat spacing, preventing media bunching and promoting a longer service life. Measuring 10 inches in length, with an inside diameter of 4.22 inches and an outside diameter of 6.85 inches, this filter meets ISO 5011 standards, ensuring quality and reliability.