aFe Cabin Air Filter - Porsche 911 1999-2015 (996/997/991) / Boxster 1997-2015 (986/987/981) / Cayman 2007-2012 (987)aFe POWER Carbon Cabin Filters clean the air entering through the ventilation system of your vehicle by reducing impurities such as dust, soot and pollen. Contains activated carbon granules to help remove odors and fumes for cleaner, fresher cabin air for you and your passengers. Details: Activated Carbon Reduces Odors and Fumes Better Than Stock Replacement Cabin Filter Easy To Install Helps Keep A C Evaporator Clean and Microbe Free Recommended