Enhance the performance of your heavy-duty engine with the Donaldson primary air filter. Crafted with high-efficiency cellulose media, it excels across a wide spectrum of demanding applications. The corrosion-resistant, coated steel liners provide crucial support during operation, ensuring maximum airflow efficiency. The innovative Pleatloc feature ensures uniform pleat spacing, preventing media bunching and extending the service life. This filter adheres to ISO 5011 standards, boasting a length of 12.99 inches, an inside diameter of 4.84 inches, and an outside diameter of 9.21 inches.