Have 07 5.4. is easy to to change out just coil and COPs. Having the dealer replace the plugs in 2 days, but I can see them wanting to also change my coils and COPs to make some extra $$$ on my account.

 

I doubt they will suggest changing the COPs. They are long life and you would be getting engine codes if they were bad. However, the boots are a different matter. They are made of rubber and tend to crack or get brittle from the heat, if you have a lot of miles. They are expensive at the dealer, about $100 for the set, but they normally do not charge extra labor as they are taking them off anyway, to get to the plug.

 

I would say this too, if they suggest changing COPs just to change them when they are not bad, then find another dealer.

 

Thanks for the advice.