67stangr

What plugs and wire combo will give my 4.0 6er mor power and smoother idle?

clubplug

Hi 67stangr

Here is what NGK recommends.

2007 FORD MUSTANG 4.0 V6 N FI

Spark Plug Part No. Stock No. Plug Gap Photo
V-Power TR55-1 2683 .054
G-Power TR55-1GP 7159 .054
Iridium IX TR55-1IX 7316 .054
Wire Set Part No. Stock No.
Wire Set FDZ080 52015

Oxygen Sensor Part No. Location Note Photo
Oxygen Sensor 22060 Pre-Catalyst Left n/a
Oxygen Sensor 22060 Pre-Catalyst Right n/a
Oxygen Sensor 22500 Post-Catalyst Left n/a
Oxygen Sensor 22500 Post-Catalyst Right n/a

Nice Pony

MSD - 8.5mm Super Conductor Ignition Wires or Performance Distributors Livewires.
Autolite - 5143 Copper Core Spark Plugs.

The wires and plugs will not make more power unless your current ones are shot which will cause a miss especially in the upper RMP range and under load. Old wires will have the same effect. Save your money on all the fancy platinum and iridium plugs. They don't work any better at all and in fact when I pulled my stock platinum plugs at 30,000 when I installed the supercharger they were shot and the gaps were all over the place. I have not had that problem at all since using the Autolite - 5143 Copper Core Spark Plugs for the past 80,000 miles. I now have 110,000 miles and every time I pull the plugs to have a look they look great and just have normal ware.