Discover the Donaldson primary air filter, a testament to excellence in filtration technology. Crafted with high-efficiency cellulose media, it stands ready to meet the demands of a diverse array of heavy-duty engine applications. Engineered with corrosion-resistant, coated steel liners, this filter ensures unparalleled support to the media, optimizing airflow for peak performance. The innovative Pleatloc feature ensures uniform pleat spacing, preventing media bunching and extending the service life. At a compact 12 inches in length, with an inside diameter of 3.24 inches and an outside diameter of 5.24 inches, this filter delivers quality and reliability.