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 : 90093P XC25832 CF9905 CF1237 AFC1622 PC5832 C25832 24118, Kit Includes: 4x Cabin Air Filter, Kit Variations: K54-100087 K54-100228 K54-100413 K54-100563 K54-100802 K54-100961 K54-101120 K54-101279 K54-101438 K54-101597, Part Reference Numbers : 90093P XC25832 CF9905 CF1237 AFC1622 PC5832 C25832 24118