4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

Spark Plugs Wires & Spark Plugs

Old 01-25-2014
Thread Starter
Join Date: Jan 2014
Location: Victoria
Posts: 6
Spark Plugs Wires & Spark Plugs

I have a 99 Ranger XLT 4.0 OHV. Has 111miles on it, no spark plug records. Was thinking of replacing them for good measure.

Looking for your input! Should I go motocraft or other??? Is there a better brand?

Old 01-25-2014
Join Date: Oct 2013
Location: Maine
Posts: 45
I'm a Ford guy, so Ford parts. Though your plugs should last to the 150k mark, wires too. Unless you've had oil/anti freeze burning, something to foul the plugs. Good mileage for a 99.

Preference in order...
Ford: Motorcraft, Autolite.
Chev: AC/Delco, Champion
Dodge: don't know don't care don't like.. LOL
Old 01-25-2014
klc317's Avatar
Join Date: Sep 2006
Location: Cincinnati, OH
Posts: 953
Agreed. Just get the Motorcraft parts.
Old 01-25-2014
Alex98's Avatar
Join Date: Jul 2007
Location: Baltimore, Maryland
Posts: 949
motorcraft or autolite plugs are fine
Old 01-26-2014
powerranger262's Avatar
iTrader: (1)
Join Date: Feb 2009
Location: Hartford, WI
Posts: 1,222
Motorcraft. Everyone says autolites are the same, but i never had any luck with them. They suck.
Old 03-13-2017
Join Date: Feb 2017
Location: Mission BC
Posts: 1
are NGK V-Power plugs OK? Ordered them but haven't installed them yet and i'm just reading this now.
Old 03-14-2017
054wheeldrive's Avatar
Join Date: Apr 2014
Location: SW, WA
Posts: 41
Stick with factory Motorcraft plugs. Motorcraft SP500 are platinum and should last for another 100,000 miles.
Old 03-27-2017
Join Date: Mar 2017
Location: Nashville, TN
Posts: 25
I just installed ngk iridium and the ngk wires. Fit was great.
Old 07-25-2017
MaDMaXX's Avatar
Join Date: Jul 2017
Location: Oregon
Posts: 781
Any updates on this?
How did the NGK wires and plugs go?
Old 03-14-2019
Join Date: Feb 2019
Location: Vancouver BC
Posts: 4
Any updates on the NGK Iridium or double Platinum plugs/wires for 4L OHV from anyone who's used them 2018/2019 ?
Old 03-14-2019
Join Date: Mar 2019
Location: Belmond, Iowa
Posts: 4
159k just got the Motorcraft platinum plugs and Blue Streak 8.5mm wires. (99 OHV 4.0 as well)
Hopefullt have time this weekend, I will report after..
Old 03-14-2019
Join Date: Mar 2017
Location: Nashville, TN
Posts: 25
I’ve got 20k on the NGK set and no problems at all. I pulled on of the plugs and they still look great truck runs good so I’m very pleased.
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