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 : 90157P XC35856 CF10730 CF1161 AFC1462 PC9353 C35856P 49353, Kit Includes: 8x Cabin Air Filter, Kit Variations: K54-100091 K54-100232 K54-100382 K54-100503 K54-100613 K54-100774 K54-100933 K54-101092 K54-101251 K54-101569, Part Reference Numbers : 90157P XC35856 CF10730 CF1161 AFC1462 PC9353 C35856P 49353