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 : R527994 527994 541322 XC10462 XC10463C CF11643 CF1277 CF1343 PC99204C C38196C WP10159, Kit Includes: 5x Cabin Air Filter, Kit Variations: K54-100097 K54-100238 K54-100314 K54-100590 K54-100811 K54-100970 K54-101129 K54-101288 K54-101447 K54-101606, Part Reference Numbers : R527994 527994 541322 XC10462 XC10463C CF11643 CF1277 CF1343 PC99204C C38196C WP10159