The Donaldson 6.68" Primary Radial Seal Air Filter is designed to provide superior protection for your engine. This filter is constructed with a heavy duty radial seal design that ensures a tight seal and superior filtration performance. The filter is designed to provide maximum protection against dirt, dust, and other airborne contaminants, while also providing improved fuel efficiency and reduced emissions. The filter is designed to last longer than traditional filters, reducing operating costs over the long term. The filter is also designed to provide enhanced engine performance and reliability. FleetPride is your First Click in Heavy Duty®.