Hello,

What is the current plug number for a 2014 3.5 Ecoboost? I have searched different threads and see different answers.

Are NGK's just as good as Motorcraft?

Also, I am at 110K miles, should I also replace the coil pack and boots?

Thanks

 

Same question 2019 eco boost.

 

NGK makes a lot of OE parts. I run them in all my vehicles with no issues. My 5.0 F150 is approaching 50k miles on the the NGK LTR6DP13 plugs I have installed.

Boots are recommended to be changed when you change spark plugs. Others may feel different about this. I reused mine as they were still supple and showed no signs of deterioration. Coils get replaced when they fail.
__________________