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 : 93856 XC10647C CF12159 CF1372 TC41454 C41454 WP10275, Kit Includes: 3x Cabin Air Filter, Kit Variations: K54-100542 K54-100792 K54-100951 K54-101110 K54-101269 K54-101428 K54-101587 K54-101690 K54-101728 K54-101766, Part Reference Numbers : 93856 XC10647C CF12159 CF1372 TC41454 C41454 WP10275