Constructed with 1/8 in. thick ABS plastic and polyester mesh with uniform micron openings, Peterbilt fresh air filter pre-filter protects fresh air filter for Peterbilt models 379, 378, 377, 386, 389, and 388. Product specifically keeps particles of debris, such as rubber, dirt, sand, and grain chaff, from getting into and clogging pleats of air filter element. Pre-filter is treated with hydrophobic water repellant process and catches particles as small as .005 in.<br />
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