Coil and plug recommendations

[muskytom]

Ford has identified counterfeit OEM Ford parts, including spark plugs and ignition coils, being sold through retailers such as Amazon: https://fordauthority.com/2022/10/ford-files-trademark-infringement-lawsuit-over-counterfeit-parts/

For those that buy OEM Ford parts - make sure you trust the place you purchase them.

I buy my critical OEM parts from a dealer and a Motorcraft jobber - to ensure I get the real deal.

I'll second that and read a similar article a while back. I specifically recalled the counterfeits with plugs and also bagged components. Also reiterate with the rest here to stick with OEM/Motorcraft. While my previous non-Ford vehicles might have been more accepting of aftermarket, my 3 Expeditions got nothing but Motorcraft from parts to especially fluids (except oil/filter). Cost is sometimes a bit of a hard pill to swallow, but I know I won't have to go back and do it a second time. As for avoiding the counterfeits (and for best price), I've been treated well with R*auto for parts

 

[jcdeal]

Definitely check your plugs. I ended up with counterfeit ones. I bought Motorcraft plugs on amazon for my fusion hybrid. 7k miles later I had a misfire. I was swapping coils between cylinders and scratching my head. Checked the plugs and gap had went from 0.05 to 0.08 in those 7k miles. All plugs were almost that bad. I actually re-gapped and ran without issues for a few days until I could get good plugs. Compared them in detail to known good Motorcraft plugs and the only visible difference I could see was a green paint dot on the top. I am guessing the paint was an indication of inspection or something else.

On another note I tow with my 2017 expedition and I would say after ~30k miles the idle is rougher and new plugs has addressed it twice now.

 

[Motorcity muscle]

OEM coils are very durable, keep them if good, watch the springs inside boots they can corrode. Rock Auto is the source for parts, no issues.