K&N Air Filter 99-04 Lightning.

K&N’s high flow replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. K&N replacement air filters are washable and reusable and come with a 10 Year / Million Mile Limited Warranty. Simply replace the OEM filter with a K&N FilterCharger® replacement filter and drive for up to 50,000, depending on driving conditions, then follow the cleaning instructions to use the filter again and again. K&N makes replacement air filters for cars, trucks, motorcycles, ATV’s, boats, personal watercraft, snowmobiles, and just about anything else that comes with an air filter.