Introducing the Donaldson primary air filter, a dependable solution engineered to meet the esteemed ISO 5011 standards. This filter is equipped with high-efficiency cellulose media, ensuring reliable performance across a diverse range of heavy-duty engine applications. The corrosion-resistant, coated steel liners provide essential support during operation, maximizing airflow efficiency. The innovative Pleatloc feature ensures uniform pleat spacing, preventing media from bunching and promoting an extended service life. It comes with precise dimensions of 4.80 inches in length, 1.57 inches inside diameter, and 4.25 inches outside diameter.