The Donaldson primary air filter is crafted to excel in a diverse range of heavy-duty engine applications. Its high-efficiency cellulose media ensures top-notch performance. The filter's corrosion-resistant steel liners play a crucial role in supporting media during operation, ultimately maximizing airflow. Additionally, the Pleatloc feature maintains uniform pleat spacing, preventing media from bunching and promoting an extended service life. This filter proudly meets ISO 5011 standards, making it a reliable choice for your engine needs. With a length of 18 inches, inside diameter of 7.72 inches, and outside diameter of 12.09 inches, it offers a precise fit.