Experience top-tier filtration with the Donaldson primary air filter. Crafted with high-efficiency cellulose media, it excels in a wide array of heavy-duty engine applications. The corrosion-resistant steel liners, coupled with the Pleatloc feature, not only support the media during operation but also ensure uniform pleat spacing, preventing bunching and extending its service life. This filter meets ISO 5011 standards and boasts dimensions of 2.99 inches in length, 6.50 inches inside diameter, and 8.27 inches outside diameter.