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 : 90275P XC36158 CF11664 CF1223 AFC1477 PC4080 C36158 24080, Kit Includes: 3x Cabin Air Filter, Kit Variations: K54-100057 K54-100389 K54-100510 K54-100655 K54-100690 K54-100849 K54-101008 K54-101167 K54-101326 K54-101485, Part Reference Numbers : 90275P XC36158 CF11664 CF1223 AFC1477 PC4080 C36158 24080