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 : 90258C XC10577C SEE CF10743 CF1390 SEE AFC1368 SEE C25870 WP10426, Kit Includes: 6x Cabin Air Filter, Kit Variations: K54-100702 K54-100861 K54-101020 K54-101179 K54-101338 K54-101497 K54-101676 K54-101714 K54-101752 K54-101790, Part Reference Numbers : 90258C XC10577C SEE CF10743 CF1390 SEE AFC1368 SEE C25870 WP10426