Introducing the Donaldson primary air filter, meticulously crafted to meet ISO 5011 standards, ensuring top-notch quality and performance. Its high-efficiency cellulose media is designed to excel across a broad spectrum of heavy-duty engine applications. The filter comes fortified with corrosion-resistant, coated steel liners, providing robust support to the media during operation and maximizing airflow efficiency. The innovative Pleatloc feature ensures uniform pleat spacing, preventing media from bunching and thus promoting an extended service life. With a length of 14.5 inches, an inside diameter of 4.56 inches, and an outside diameter of 8.93 inches, this filter is engineered for precision and effectiveness.