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 : 90289C XC10010C CF11472 CF1370 AFC1615 PC4255C C31382C 24255, Kit Includes: 10x Cabin Air Filter, Kit Variations: K54-100090 K54-100231 K54-100310 K54-100431 K54-100629 K54-100917 K54-101076 K54-101235 K54-101394 K54-101553, Part Reference Numbers : 90289C XC10010C CF11472 CF1370 AFC1615 PC4255C C31382C 24255