Experience the exceptional performance of the Donaldson primary air filter, meticulously designed for heavy-duty engine applications. Its high-efficiency cellulose media ensures reliable operation across a wide range of conditions. The filter's corrosion-resistant, coated steel liners provide crucial support to the media, optimizing airflow for enhanced performance. Thanks to the Pleatloc feature, pleat spacing remains consistent, preventing bunching and prolonging the filter's service life. With dimensions of 7 inches in length, 1.67 inches inside diameter, and 3.28 inches outside diameter, this filter is engineered to meet ISO 5011 standards, ensuring a superior standard of quality.