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 : 90142C XC16081C CF10828 CF1348 AFC1349 PC9376 C16081P 49376, Kit Includes: 10x Cabin Air Filter, Kit Variations: K54-100116 K54-100257 K54-100397 K54-100518 K54-100528 K54-100944 K54-101103 K54-101262 K54-101421 K54-101580, Part Reference Numbers : 90142C XC16081C CF10828 CF1348 AFC1349 PC9376 C16081P 49376