Ford V-10 sparkplugs (SP 479 or AP 103)

Stick with the Motorcraft plugs and coils.
I've seen issues with other brands

I think when I changed the plugs on our 2004 X the ford dealer told me to use SP479, it was 2 or 3 years ago. I changed them at about 120,000 miles and they all still looked OK.

I used motorcraft on mine. I changed mine, its an 02, no big deal, use a torque wrench.

Between the two which plug the SP 479 or AP 103?

Are you asking me? Motorcraft SP 479.

I just did my plugs on 08 6.8. I was scared to death that they were 2 piece plugs but the weren't. I watched videos on youtube and just took time.. I used motorcraft plugs.

Motorcraft.

Before you do it, you'd better do some research on line about the blown out plug issue on the 2002 and earlier versions. There is a ton of info out there and it's not just a case of changing the plugs, there's a lot more to it. For sure Motorcraft but you might strip the threads taking them out plus there are special specs for installing the new ones.

jbbrick wrote:
Before you do it, you'd better do some research on line about the blown out plug issue on the 2002 and earlier versions. There is a ton of info out there and it's not just a case of changing the plugs, there's a lot more to it. For sure Motorcraft but you might strip the threads taking them out plus there are special specs for installing the new ones.

Know all about the plug issue that's why I'll take it to my mechanic.

Mines an 01 I used SP479