Purolator TECH Cabin Air Filters are trusted by technicians to help remove harmful airborne contaminants and protect the HVAC system. And now that nearly 80% of all new cars sold feature a cabin air filter that will need to be replaced, it's time to improve your level of service and get your fair share of one of the fastest growing automotive repair categories. Purolator TECH Cabin Air Filters are available in both particulate and carbon configurations to meet OE requirements, improve overall driving comfort, encourage better airflow and aid in defroster performance.