I saw someone mention the two piece motorcraft plug that comes apart and I wanted to help clarify that those plugs not used in the ranger. Here is a photo of the motorcraft plugs that come apart:

These syle plugs are used in the 5.4 Triton F series and Expeditions and E series vans.

Also, the 4.0 OHV and SOHC plugs are different from each other; one is shorter so make sure you get the correct plug for your application. As long as you use the correct plug you shouldn't have a problem; brand is a preference (and I still prefer NGK lol)

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Rick Large
Mesa AZ
'99 Ex-Ranger 2wd XLT 5.0, Explorer V8 and auto transmission swap, floor shifter from Nissan Altima Parts, aluminum radiator & electric fan, OBX headers, 3" custom exhaust, explorer roof rack, 2006 mirrors, cut front 60/40 seat to buckets, 4 in lift spindles up front and shackles in back

Just so you guys know, the copper plugs can still be used for around 30k, just have to remove them and regap them every so often.

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2011 Ranger XL Extended cab, 2x4, 2.3 L Duratec, Automatic, Mis-colored Leer camper shell, Ultragauge, LED plate bulbs, DDM "cree" reverse lights. Staying as stock as possible

When i changed my sparkplugs at NTB.
I was told by everyone that to only use motorcraft plugs and nothing else o.O....
What plating are the motorcraft plugs?

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Proud owner of 04 F0rd Ranger EDGE 2WD
Stepside, Single Cab

I see many people who come in with double platinum plugs and whenever I take them out for inspection, I notice that the spark usually tends to go to only one side of the prongs instead of coming from both. Why is this, not sure but that is what I have seen from many people coming in with those plugs.

The best performing plugs I have used and recommend are the NGV V-Power plugs. Th V groove is supposed to make the spark expand quicker creating a better combustion inside the cylinder.

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Black 02 Ford Ranger Edge - 3.0 5spd