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 : 90236P XC26089 CF10559 CF1177 AFC1522 PC6089 C26089 49700, Kit Includes: 4x Cabin Air Filter, Kit Variations: K54-100100 K54-100241 K54-100469 K54-100678 K54-100740 K54-100899 K54-101058 K54-101217 K54-101376 K54-101535, Part Reference Numbers : 90236P XC26089 CF10559 CF1177 AFC1522 PC6089 C26089 49700