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 : 89816 XC25478 CF10137 CF1036 AFC1148 PC5478 C25478 24816, Kit Includes: 2x Cabin Air Filter, Kit Variations: K54-100170 K54-100374 K54-100495 K54-100664 K54-100718 K54-100877 K54-101036 K54-101195 K54-101354 K54-101513, Part Reference Numbers : 89816 XC25478 CF10137 CF1036 AFC1148 PC5478 C25478 24816