Fit For Chevrolet Cobalt Fit For Pontiac G5 Pursuit 52493319 Combo Set Engine & Cabin Air Filter. OEM NO. : 21999324,52493319 Protects the air conditioner: The filter protects your car's air conditioning system from dust and dirt, helping it to stay cleaner. This multi-functional composite automotive cabin air conditioning filter simultaneously filters dust, pollen, and odors, prevents mold growth in damp ventilation ducts, and is easy to install and remove, making it a replacement for the original vehicle filter. This high-efficiency dustproof automotive cabin air conditioning filter uses a multi-layer fiber structure to effectively intercept sand and other impurities, reducing dust entering the vehicle cabin when driving on rural dirt roads., Manufacturer: JHYTVBMLOI