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 : 97027 XC11796 TC41488C C41488C WP10430, Kit Includes: 12x Cabin Air Filter, Kit Variations: K54-100573 K54-100816 K54-100975 K54-101293 K54-101452 K54-101611 K54-101673 K54-101711 K54-101749 K54-101787, Part Reference Numbers : 97027 XC11796 CF12573 TC41488C C41488C WP10430