Introducing the Donaldson primary air filter, meticulously designed to enhance performance in a wide array of heavy-duty engine applications. Its high-efficiency cellulose media ensures reliable operation, providing optimal filtration in demanding conditions. Supported by corrosion-resistant, coated steel liners, this filter maximizes airflow, contributing to seamless functionality. The Pleatloc feature further ensures uniform pleat spacing, preventing media bunching and extending the filter's service life. With precise measurements of 13.39 inches in length, 5.39 inches inside diameter, and 7.32 inches outside diameter, this filter adheres to the esteemed ISO 5011 standards.