Elevate your heavy-duty engine's performance with the Donaldson primary air filter. Engineered with high-efficiency cellulose media, it excels across a diverse range of applications. The corrosion-resistant, coated steel liners provide crucial support during operation, optimizing airflow for maximum efficiency. The innovative Pleatloc feature ensures consistent pleat spacing, preventing media from bunching and promoting an extended service life. This filter adheres to ISO 5011 standards, measuring 10.59 inches in length, with an inside diameter of 7.68 inches and an outside diameter of 10.55 inches.