Elevate your heavy-duty engine's performance with the Donaldson primary air filter. Crafted with precision, its high-efficiency cellulose media is tailored to excel in a diverse range of demanding applications. The filter's longevity is fortified by corrosion-resistant, coated steel liners, providing robust support during operation while optimizing airflow for peak performance. The innovative Pleatloc feature ensures uniform pleat spacing, preventing media from bunching and significantly extending the filter's service life. This filter proudly bears ISO 5011 certification, a testament to its adherence to the highest industry standards. Standing at 14.02 inches in length, with an inside diameter of 8.39 inches and an outside diameter of 12.76 inches, it's perfectly calibrated to seamlessly integrate into your engine system.