A new air filter provides better engine protection and improved performanceIncreases airflow and horsepowerInstall a clean air filter every 12,000 miles for best resultsFollow recommended change intervals as noted in your vehicle's owner's manualFRAM's Air Filters can increase airflow, horsepower, and improve overall engine performance, as well as provide better engine protection. Most dirt in your engine enters through your air filter, so install a clean air filter every 12,000 miles for the best results.