Introducing the Donaldson safety air filter, a reliable safeguard for your engine's well-being. This filter serves as a crucial backup in the event of primary filter damage or improper installation, ensuring uninterrupted performance. It acts as a robust barrier, preventing contaminants from infiltrating the clean side of the air intake system during primary filter servicing, thereby preserving your engine's integrity. Engineered to swiftly plug in the event of any contamination bypassing the primary filter, it provides a vital alert for operators. With a length of 9 inches, inside diameter of 1.94 inches, and outside diameter of 2.46 inches, this Donaldson filter complies with ISO 5011 standards. For optimal engine health, we recommend replacing safety filters.