i would like to know too thx
x2. there is no need for fancy plugs.Suggest a basic OEM style platinum plug, if purchased over the web the cost is under $2.50 each.
Werd. You will never get an increase in horsepower by upgrading to the so called "better" plugs, unless yours are worn down and need to be replaced anyway. Trust me, I'm in an ignition systems class right now.Get stock NGK plugs & wires...don't upgrade to anything fancy. You'll wasting $$$.
It is hard to pull out a winner in the NGK vs Denso debate since both are iridium spark plugs and offer almost similar performance.Run the OEM ignition wires. They are better than most aftermarket wires for the 5SFE, trust me.
Your engine has too many miles to consider iridium or even platinum. Denso and NGK make true iridium plugs, and I'm not sure I've ever heard of a plated iridium plug. The main benefit of iridium is extra long life (servicability), but the cost is conductivity at the tip. Copper plugs will provide the best spark for the best cost.
The long life iridiums last for over 120k miles on new engines, and around 60-90k on older engines. Plug fouling may occur on engines with considerable wear, so there's no point in using anything other than the stock traditional plug (nickel) or a copper replacement.
And, the finer the tip, the less voltage is required to create spark. It doesn't necessarily increase performance UNLESS you have a weak ignition system to begin with.
For more information please visit the website here: jeepequipment.com/best-spark-plugs-for-jeep-review/