FORD 2011 Flex v.2 - Manual (Page 378)

MOTORCRAFT PART NUMBERS
Component 3.5L V6 Engine 3.5L V6 EcoBoost
Engine
Engine air filter
element FA-1884 FA-1884
Battery BXT-65-650 BXT-65-750
Oil filter FL-500-S FL-500-S
Spark Plugs SP-411 1 SP-512-A 1
1 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.
Maintenance and Specifications
378
2011 Flex (471)
Owners Guide, 2nd Printing
USA (fus)