PUR exclusive enhanced HVAC filters up to 99.7% of dust, pollen and contaminants, PUR exclusive weaves are USA-engineered to last up to 15,000 miles, 25% longer than standard performance of 12,000 miles, PUR filter use thick, industrial strength electrostatic media to trap even the tiniest of particles while densely packed activated carbon prevents gases and odours from entering the cabin, Road debris, exhaust fumes, and contaminants undergo filtration through a three-layer system, which includes a dust filter for trapping road debris, a particle-averting filter to block airborne particles, and an adsorption filter for absorbing exhaus, Contains soda combined with carbon cleans the outside air flowing through the ventilation system, Part Reference Numbers : R90268 90268P XC10303 CF11177 CF1227 AFC1621 PC4012 C28183 24012, Kit Includes: 9x Cabin Air Filter, Kit Variations: K54-100107 K54-100248 K54-100326 K54-100447 K54-100646 K54-100725 K54-100884 K54-101043 K54-101202 K54-101361, Part Reference Numbers : R90268 90268P XC10303 CF11177 CF1227 AFC1621 PC4012 C28183 24012