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 : 89900 XC38188 CF10139 CF1065 AFC1252 PC8188 C38188 24900, Kit Includes: 2x Cabin Air Filter, Kit Variations: K54-100261 K54-100384 K54-100505 K54-100654 K54-100705 K54-100864 K54-101023 K54-101182 K54-101341 K54-101500, Part Reference Numbers : 89900 XC38188 CF10139 CF1065 AFC1252 PC8188 C38188 24900