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 : 90213P XC10313C CF10733 CF1204 AFC1413 PC5831 C15831 C15831C 49367, Kit Includes: 11x Cabin Air Filter, Kit Variations: K54-100017 K54-100158 K54-100402 K54-100523 K54-100551 K54-100804 K54-101122 K54-101281 K54-101440 K54-101599, Part Reference Numbers : 90213P XC10313C CF10733 CF1204 AFC1413 PC5831 C15831 C15831C 49367