Introducing the Donaldson primary air filter, meticulously designed to excel in heavy-duty engine applications. Crafted with high-efficiency cellulose media, this filter ensures reliable filtration across a wide range of scenarios. The corrosion-resistant, coated steel liners provide robust support to the media, enhancing airflow for seamless operation. The innovative Pleatloc feature ensures uniform pleat spacing, preventing any media bunching and thereby promoting a longer service life. With a compact length of 2.20 inches, an inside diameter of 5.50 inches, and an outside diameter of 6.90 inches, this filter offers a tailored fit. It proudly adheres to the esteemed ISO 5011 standards.