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 : 90244P XC26086 CF10776 CF1197 AFC1458 PC4600 C26086 24600, Kit Includes: 4x Cabin Air Filter, Kit Variations: K54-100011 K54-100152 K54-100461 K54-100587 K54-100788 K54-100947 K54-101106 K54-101265 K54-101424 K54-101583, Part Reference Numbers : 90244P XC26086 CF10776 CF1197 AFC1458 PC4600 C26086 24600