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 : 89473 90080C XC15510C CF10362 CF1068 AFC1478 PC5510 C15510 24473 24673, Kit Includes: 4x Cabin Air Filter, Kit Variations: K54-100088 K54-100229 K54-100456 K54-100630 K54-100734 K54-100893 K54-101052 K54-101211 K54-101370 K54-101529, Part Reference Numbers : 89473 90080C XC15510C CF10362 CF1068 AFC1478 PC5510 C15510 24473 24673