What is the original spark plug that came in 2006 5.4l
#2
#3
motorcraft, i only try to run oem plugs - have seen and had problems with anything but oem. i know autolite and brisk are good but IMO i stick to OEM. Exact part number should be a quick question for local stealership parts guy. just give em a call!
#4
Senior Member
why in the world would it be anything other than motorcraft?????? why would that even come up as a question ford puts ford parts in their trucks from the factory
#6
I was just wondering, I was told that they came with Autolites which I thought was odd so I thought I would ask the people who know best. I am replacing mine I am using the Motorcraft plugs. Just a simple question.