Elevate your heavy-duty engine's performance with the Donaldson primary air filter. Crafted with precision, this filter boasts high-efficiency cellulose media that excels across a diverse range of demanding applications. The addition of corrosion-resistant, coated steel liners not only supports the media during operation but also optimizes airflow, ensuring your engine operates at peak efficiency. The innovative Pleatloc feature ensures uniform pleat spacing, preventing media from bunching and extending the filter's service life. With ISO 5011 certification, you can trust that this filter meets the highest industry standards. Standing at 14 inches in length, with an inside diameter of 7.72 inches and an outside diameter of 12.09 inches, it's tailored to fit seamlessly into your engine system.