PUR exclusive enhanced HVAC filters up to 99.7% of dust, pollen and contaminants, PUR exclusive activated carbon 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 : 89822 XC45383 XC45383C CF8644 CF8644A CF1016 CF1139 AFC1167 PC5383 C45383 24322 24822, Kit Includes: 4x Cabin Air Filter, Kit Variations: K54-100129 K54-100270 K54-100468 K54-100591 K54-100765 K54-100924 K54-101083 K54-101242 K54-101401 K54-101560, Part Reference Numbers : 89822 XC45383 XC45383C CF8644 CF8644A CF1016 CF1139 AFC1167 PC5383 C45383 24322 24822