Introducing the Donaldson Extended Life primary air filter, meticulously engineered to deliver reliable performance across a wide spectrum of heavy-duty engine applications. Crafted with high-efficiency cellulose media, this filter ensures efficient filtration without compromise. Its corrosion-resistant, coated steel liners provide essential support during operation, optimizing airflow to enhance overall efficiency. The innovative Pleatloc feature ensures uniform pleat spacing, preventing media from bunching and promoting an extended service life. With precise measurements of 18.00 inches in length, 5.78 inches in inside diameter, and 9.14 inches in outside diameter, this filter adheres to ISO 5011 standards, offering a trustworthy solution for your engine's filtration needs.