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 : 90218P XC36115 CF10930 CF1180 AFC1526 PC6115 C36115 24030, Kit Includes: 4x Cabin Air Filter, Kit Variations: K54-100062 K54-100203 K54-100417 K54-100627 K54-100761 K54-100920 K54-101079 K54-101238 K54-101397 K54-101556, Part Reference Numbers : 90218P XC36115 CF10930 CF1180 AFC1526 PC6115 C36115 24030