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 : 91129 XC10386 CF11809 CF1287 AFC1626 PC8173 PC9958 C38173 WP10129, Kit Includes: 2x Cabin Air Filter, Kit Variations: K54-100215 K54-100299 K54-100420 K54-100600 K54-100778 K54-100937 K54-101096 K54-101255 K54-101414 K54-101573, Part Reference Numbers : 91129 XC10386 CF11809 CF1287 AFC1626 PC8173 PC9958 C38173 WP10129