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 : 479950 91009 XC10020 CF11776 CF1351 AFC1550 PC9932 C48162 WP10009, Kit Includes: 10x Cabin Air Filter, Kit Variations: K54-100020 K54-100161 K54-100323 K54-100444 K54-100593 K54-100955 K54-101114 K54-101273 K54-101432 K54-101591, Part Reference Numbers : 479950 91009 XC10020 CF11776 CF1351 AFC1550 PC9932 C48162 WP10009