Freedom Air Filters’ prefilters for Peterbilt Model 579

Updated Aug 7, 2015

Freedom Air Filters prefilters for Peterbilt’s Model 579Freedom Air Filters’ prefilters for Peterbilt’s Model 579 tractors are sold as a pair and designed to fit over the factory air intake grills to protect the engine and performance air filter without sacrificing airflow or horsepower.

The prefilters are constructed with a proprietary polyester mesh with uniform micron openings and treated with a hydrophobic water repellant process to keep out moisture and large particles of debris such as grain chaff, rubber, dirt and sand before reaching the air filter.

Freedom Air Filters,