Introducing the Donaldson primary air filter, meticulously engineered to deliver high performance in heavy-duty engine applications. Its high-efficiency cellulose media ensures efficient filtration across a wide range of demanding conditions. The corrosion-resistant, coated steel liners provide sturdy support to the media during operation, optimizing airflow. The innovative Pleatloc feature maintains uniform pleat spacing, preventing media from bunching and thereby extending the filter's service life. Crafted with flame retardant media material, this filter meets ISO 5011 standards, ensuring reliable quality. With a length of 15 inches, inside diameter of 3.25 inches, and outside diameter of 5.25 inches, trust in Donaldson for dependable air filtration solutions.