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 : 90210P XC35861 CF10732 CF1164 AFC1606 PC4753 C35861 24753, Kit Includes: 5x Cabin Air Filter, Kit Variations: K54-100018 K54-100159 K54-100342 K54-100666 K54-100691 K54-100850 K54-101009 K54-101168 K54-101327 K54-101486, Part Reference Numbers : 90210P XC35861 CF10732 CF1164 AFC1606 PC4753 C35861 24753