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The standard Motorcraft plugs last well over 100k miles and work well why mess with it?
I sold my last ex with 228k with 1 change of plugs at 154k, never missed a beat. Just replace with new. Just my .02
Those are the same as I used on my V10. They are good for around 100k miles. I would also reccomend picking up the coil boots and springs while your at it. I have only used Motorcraft parts for my tune up stuff.
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.