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 : R90266 90266P XC36156 CF11183 CF1235 AFC1501 PC6156 C36156 24017, Kit Includes: 4x Cabin Air Filter, Kit Variations: K54-100044 K54-100185 K54-100502 K54-100679 K54-100741 K54-100900 K54-101059 K54-101218 K54-101377 K54-101536, Part Reference Numbers : R90266 90266P XC36156 CF11183 CF1235 AFC1501 PC6156 C36156 24017