Introducing the Donaldson primary air filter, a reliable choice for heavy-duty engine applications. Crafted with high-efficiency cellulose media, it ensures top-notch performance across a wide range of conditions. The corrosion-resistant, coated steel liners not only support the media during operation but also optimize airflow. With the Pleatloc feature in place, uniform pleat spacing is guaranteed, preventing any bunching of the media and promoting an extended service life. Measuring at 5.94 inches in length, 3.15 inches in inside diameter, and 6.06 inches in outside diameter, this filter complies with ISO 5011 standards, offering you a product you can trust for your engine's needs.