PUR exclusive enhanced HVAC filters up to 99.7% of dust, pollen and contaminants, PUR exclusive activated carbon 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 : 90141C XC26075C CF1187 AFC1586 TC26075C C26075C 49373, Kit Includes: 10x Cabin Air Filter, Kit Variations: K54-100562 K54-100962 K54-101121 K54-101280 K54-101439 K54-101598 K54-101665 K54-101703 K54-101741 K54-101779, Part Reference Numbers : 90141C XC26075C CF1187 AFC1586 TC26075C C26075C 49373