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 : 89807 XC15389 CF8921 CF8921A CF1010 AFC1067 PC5389 C15389 24807, Kit Includes: 5x Cabin Air Filter, Kit Variations: K54-100103 K54-100244 K54-100351 K54-100661 K54-100693 K54-100852 K54-101011 K54-101170 K54-101329 K54-101488, Part Reference Numbers : 89807 XC15389 CF8921 CF8921A CF1010 AFC1067 PC5389 C15389 24807