See also:

3.7L V6 Engine
...

Motorcraft part numbers
1For 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 ...

Reporting safety defects (U.S. only)
If you believe that your vehicle has a defect which could cause a crash or could cause injury or death, you should immediately inform the National Highway Traffic Safety Administration (NHTS ...