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. Due to its ability to clean the air of dirt, dust, and other contaminants, this replacement air filter system is the ideal solution to optimize 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®.