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 : 90018P XC15439 CF10135 CF1037 AFC1213 PC5439 C15439 24817, Kit Includes: 10x Cabin Air Filter, Kit Variations: K54-100122 K54-100263 K54-100391 K54-100512 K54-100622 K54-100926 K54-101085 K54-101244 K54-101403 K54-101562, Part Reference Numbers : 90018P XC15439 CF10135 CF1037 AFC1213 PC5439 C15439 24817