104k 2007 4.6L Spark Plug Removal

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MSD is also making a one-piece plug for the early 3V engines. Although I have never found anyone who has actually tried them even in a Mustang let alone a truck. I also tried the Champions after breaking three of the originals on removal but had a misfire after only about 2k miles and went back to the OEM Motorcraft plugs and switched the coils to Accel at the same time. That was probably about 20k miles ago. Runs like top. Knock on wood.

Call me a wuss but the thought of using an impact wrench on aluminum heads left visions of stripped threads dancing in my head.
 
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