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 : 89818 90077C XC45508C CF8718A CF1202 AFC1145 PC5508 C45508P 24818, Kit Includes: 2x Cabin Air Filter, Kit Variations: K54-100153 K54-100318 K54-100439 K54-100579 K54-100742 K54-100901 K54-101060 K54-101219 K54-101378 K54-101537, Part Reference Numbers : 89818 90077C XC45508C CF8718A CF1202 AFC1145 PC5508 C45508P 24818