K&N Replacement Air Filter & Airbox
- Comes with filter and air box
- Washable and reusable
- High air flow with excellent filtration
- Replaces factory airbox and filter
- K&N million mile limited warranty
K&N’s lifetime replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. This air filter with air box is designed to replace your existing factory air box and air filter.
This replacement air filter and air box are street legal in all 50 states and are covered by the famous K&N Million-Mile Limited Warranty.
Ford F250/350/450/550 Super Duty