2010 Ford Flex Owner Guide 2nd Printing - Page 380

Maintenance and Specifications 6. Replace the air filter housing cover and secure the clamps. Be sure that the air cleaner cover tabs are engaged into the slots of the air cleaner housing. 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. MOTORCRAFT PART NUMBERS Component Engine air filter element Battery Oil filter Spark Plugs 1 3.5L V6 engine FA-1884 BXT-65-750 FL-500-S SP-4111 3.5L V6 EcoBoost engine FA-1884 BXT-65-750 FL-500-S SP-5121 For spark plug replacement, see your authorized dealer. Refer to scheduled maintenance information for the appropriate intervals for changing the spark plugs. Replace the spark plugs with ones that meet Ford material and design specifications for your vehicle, such as Motorcraft௡ or equivalent replacement parts. The customer warranty may be void for any damage to the engine if such spark plugs are not used. 380 2010 Flex (471) Owners Guide, 2nd Printing USA (fus)