Introducing the Donaldson primary air filter, meticulously engineered to excel in heavy-duty engine applications. Its high-efficiency cellulose media ensures consistent performance across a wide spectrum of demanding environments. The filter's corrosion-resistant, coated steel liners provide robust support to the media during operation, optimizing airflow for maximum efficiency. The innovative Pleatloc feature maintains uniform pleat spacing, preventing media from bunching and contributing to a prolonged service life. Compliant with ISO 5011 standards, this filter stands at 19.38 inches in length, with an inside diameter of 4.87 inches and an outside diameter of 9.06 inches.