E-4650Washable and reusableDesigned for industrial applicationsEase of maintenanceSuperior filtration protects the engineLasts up to 50,000 miles before cleaning, depending on driving conditionsThe K&N E-4650 replacement air filter is designed to increase horsepower and acceleration by reducing restriction and increasing air flow to your engine. The E-4650 is made with oiled 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. One K&N replacement air filter costs less than replacing disposable air filters over and over again. The E-4650 is easy to install and is custom designed to fit right into the factory air box of select IMPCO industrial engines, as well as other applications.