The K&N E-1650 replacement air filter is designed to increase horsepower and acceleration by reducing restriction and increasing air flow to your engine. The E-1650 is made with layers of woven cotton that offer superior filtration and can be washed and reused repeatedly. K&N replacement air filters can go up to 50,000 miles before cleaning is required, depending on driving conditions. The E-1650 is easy to install and is custom designed to fit right into the factory air box of many automotive and industrial applications.