WARNING   WARNING:  To reduce the risk of vehicle damage and personal burn injuries, do not start your engine with the air cleaner removed and do not remove it while the engine is running.

When changing the air filter element, use only the air filter element listed.   See   Capacities and Specifications
For EcoBoost equipped vehicles: When servicing the air cleaner, it is important that no foreign material enter the air induction system. The engine and turbocharger are susceptible to damage from even small particles.
Change the air filter element at the proper interval. See  Scheduled Maintenance . 
Note:   Failure to use the correct air filter element may result in severe engine damage. The customer warranty may be void for any damage to the engine if the correct air filter element is not used.
EcoBoost Engines
Air Filter Housing Clip Removal
  1. Loosen the four fasteners and remove the air cleaner assembly lid.
  1. Remove the air filter element from the air filter housing.
  1. Wipe any dirt or debris from the air cleaner assembly to make sure no dirt gets in the engine and to make sure you have a good seal.
Changing the Air Filter Element
  1. Install the new air filter element. Slide the open end of the air filter element in first, below the tab. Then push the closed end of the air filter into the bottom of the tray. The closed end should fit inside the groove in the tray. The tab of the closed end of the air filter should be oriented down and fit between the forks on the tray as shown at the arrow above.
Note:   Make sure you align the tab in the air filter element with the fork in the air cleaner assembly tray.
  1. Install the air cleaner assembly lid and tighten the four fasteners.
Duratec Engines
Air Filer Assembly
  1. Detach the 2 clips that secure the air filter cover to the housing.
  2. Carefully remove the air filter cover from the housing. Do not detach any connections or tubes from the cover.
  3. Remove the air cleaner from the housing.
  4. Wipe any dirt or debris from the air filter housing and cover to make sure that no dirt gets into the engine.
  5. Load the air filter into the housing.
  6. Replace the air filter cover and secure the clips.