Get your semi Ready for the Road Ahead™ with tremendous engine protection to keep it at its best, with the Donaldson Primary Round PowerCore® Air Filter. With a specialized collection system, this replacement air filter traps dirt, dust, and other contaminants before they enter the motor, resulting in cleaner air and enhanced vehicle performance. Fashioned with innovative and efficient technology to extend service intervals and reduce how often each filter should be changed. FleetPride is your First Click in Heavy Duty®.