PUR exclusive enhanced HVAC filters up to 99.7% of dust, pollen and contaminants, PUR exclusive activated carbon 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 : 93971 XC11583C CF12555 CF1360C 97133-K4000 TC31476C C31476C WP10416, Kit Includes: 6x Cabin Air Filter, Kit Variations: K54-100806 K54-100965 K54-101124 K54-101283 K54-101442 K54-101601 K54-101675 K54-101713 K54-101751 K54-101789, Part Reference Numbers : 93971 XC11583C CF12555 CF1360C 97133-K4000 TC31476C C31476C WP10416