Introducing the Donaldson primary air filter, meticulously designed to meet the demands of heavy-duty engine applications. Crafted with high-efficiency cellulose media, it ensures top-tier filtration without compromise. The filter's corrosion-resistant, coated steel liners provide crucial support during operation, maximizing airflow for enhanced efficiency. Thanks to the innovative Pleatloc feature, pleat spacing remains uniform, preventing media from bunching and ensuring a prolonged service life. With precise measurements of 9.02 inches in length, 5.79 inches in inside diameter, and 8.39 inches in outside diameter, this filter adheres to ISO 5011 standards, offering a reliable solution for your engine's filtration needs.