Outfit your semi to be Ready for the Road Ahead™ with superior engine protection to keep it at its best, with the Donaldson Primary RadialSeal™ Air Filter. By utilizing a specialized collection system, this replacement air filter is the ideal choice to optimize vehicle performance by cleaning the air of dirt, dust, and other contaminants. Constructed with innovative materials and modern technology to extend service intervals and reduce how often each filter should be changed. FleetPride is your First Click in Heavy Duty®.