K&N Fuel Injection Performance Kit to fit your PT Cruiser (FIPK) The World's Best Flowing, Best Filtering, High Performance "Street-Legal" Air Filtration Systems Better Acceleration Increases Power (up to a 26 HP gain) Filter is Washable and Reusable Will NOT Void Vehicle Warranty Lasts up to 50,000 miles before service is required Replaces OEM Filter and Air Box CARB Approved Emission Legal in all 50 US States. 10 Year / Million Mile Limited Warranty Works with Original Equipment Manufacturer Computer Systems