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The cabin air filter is a small pleated filter made of multi-fiber paper cotton or other engineered material. Before entering the passenger compartment, outside air is directed through this filter to trap the contaminants inside the filter and prevent them from entering the inside of your vehicle.

If you don`t change your cabin air filter, the filter will become more clogged with dirt and debris and the efficiency of the filter and your car`s HVAC system will be compromised. The air volume into your passenger compartment will be continually reduced which will lead to the issue of foul odors inside your car. The simple act of changing your cabin air filter will dramatically improve the air quality in your vehicle.