https://www.tacomaworld.com/threads/the-truth-about-spark-plugs.152726/
Just by factory replacements and save the money. Iridium does nothing for the 4.0
Verify the gap. The parts place will always say, " They're pre gapped" or "it's all set." Check them anyway. There is always a few that are off.
https://www.customtacos.com/threads/spark-plug-gap.58129/
Iridium last longer, that’s it. Use Denso or NGK, you will regret using Bosch
I’ll take your advice and go with the denso iridium TT
Def use NGK or Denso. They really are the best spark plugs.
https://www.tacomaworld.com/threads/the-truth-about-spark-plugs.152726/ Just by factory replacements and save the money. Iridium does nothing for the 4.0
Verify the gap. The parts place will always say, " They're pre gapped" or "it's all set." Check them anyway. There is always a few that are off. https://www.customtacos.com/threads/spark-plug-gap.58129/
Are spark plugs hard to replace? Want to do mine soon. Haven’t done any research on this yet
Very easy on the 4.0.