ESR4238K - K&N Air Filter for ESR4238 - Defender & Discovery TD5

Increase horsepower & acceleration! K&N's lifetime replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. These filters are custom designed to fit into the existing factory air box. Their drop-in design means adding performance is simple. Simply remove the disposable air filter and replace it with a K&N; there is NEVER any cutting or fitting required. > High air flow with excellent filtration > Designed to increase horsepower and acceleration > Washable and reusable > Will not void vehicle warranty > Lasts up to 50,000 miles before cleaning is required depending on driving conditions > Easy high performance add-on