Introducing the Donaldson primary air filter, meticulously designed to meet the esteemed ISO 5011 standards. This filter boasts 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, optimizing airflow for enhanced efficiency. The innovative Pleatloc feature ensures uniform pleat spacing, preventing media from bunching and promoting an extended service life. With precise dimensions of 12.28 inches in length, 5.16 inches inside diameter, and 9.33 inches outside diameter, trust in Donaldson to deliver a dependable primary air filter tailored to your engine's needs.