julioce

I guess you are right, no my prado is stock, i was planning on using better spark plugs Iridium instead of the ones from factory... but will use factory ones.

My prado is using Denso K16R-U i wanted to get better spark plugs so i got the... Denso 1KH20 - 5334 - i read those fit the tacoma 2.7 2005 engine 3RZ But installing them i realized that they are longer in the base... The side that goes into the cilynder... So They are going to be more close to the piston... So my question is... Can i use them? Thanks for your comments.