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 : 89827 XC15637C CF10830 CF1093 AFC1391 TC15637C C15637C 24827, Kit Includes: 10x Cabin Air Filter, Kit Variations: K54-100560 K54-100987 K54-101146 K54-101305 K54-101464 K54-101623 K54-101663 K54-101701 K54-101739 K54-101777, Part Reference Numbers : 89827 XC15637C CF10830 CF1093 AFC1391 TC15637C C15637C 24827