Elevate your heavy-duty engine's performance with the Donaldson primary air filter. Engineered with high-efficiency cellulose media, it excels in a wide range of demanding applications. The filter features corrosion-resistant, coated steel liners that provide crucial support to the media during operation, ensuring maximum airflow efficiency. The Pleatloc feature ensures uniform pleat spacing, preventing media bunching and promoting a longer service life. With precise measurements of 5.20 inches in length, 2.60 inches in inside diameter, and 4.72 inches in outside diameter, this filter adheres to the esteemed ISO 5011 standards