Prepare your semi to be Ready for the Road Ahead™, with the Donaldson Primary RadialSeal™ Air Filter that ensures phenomenal engine protection to keep your system running at its best. This replacement air filter system traps dust, dirt, and other contaminants before they enter motor, leading to cleaner air and enhanced vehicle performance. Manufactured with innovative and resilient technology to extend service intervals and reduce how often each filter should be changed. FleetPride is your First Click in Heavy Duty®.