The air filter is a filter dedicated to one purpose: to clean the incoming air going into your engine. Your engine uses air and gasoline to create combustion for your car to run — when this air is free of debris, and as pure as possible, your vehicle will actually run more efficiently, even increasing your mileage and horsepower. If you want the very best performance in a variety of ways, upgrading your air filter will help you achieve just that.
A cabin filter sits near the internal intake for your car, and ends up filtering all the air you breath while in your vehicle. This filter helps eliminate pollution, pollens, and other airborne nuisances, as well as small debris. This filter is important for your health and safety.