FORD 2013 Flex v.1 - Manual (Page 322)

Refer to Scheduled Maintenance for the appropriate intervals for
changing the air filter element.
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.
Changing the air filter element
3.5L V6 engine
3.5L V6 EcoBoost™ engine
1. On the passenger’s side of the air filter housing, release the two
clamps from the air filter housing cover.
322 Maintenance
2013 Flex (471)
Owners Guide gf, 1st Printing
USA (fus)