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 : 93950 XC11724 CF12450 TC21423 C21423 WP10371, Kit Includes: 6x Cabin Air Filter, Kit Variations: K54-100753 K54-100912 K54-101071 K54-101230 K54-101389 K54-101548 K54-101643 K54-101681 K54-101719 K54-101757, Part Reference Numbers : 93950 XC11724 CF12450 TC21423 C21423 WP10371