NGK Iridium IX Spark Plug
NGK is a highly trusted brand among spark plug manufacturers, to the extent that the vast majority of automakers today choose to equip their cars and trucks with NGK spark plugs as original equipment. The Iridium IX is a good example of how well-sorted a modern iridium spark plug can be, with the small-diameter iridium electrode offering powerful yet controlled spark. This results in a more thorough ignition, and can reduce or eliminate surging and other ignition-related engine problems.
As with many other high-tech modern spark plugs, the NGK Iridium IX is a low-maintenance design that you can install and forget, though it is prudent to check the condition of the spark plugs every once in a while. Though the NGK Iridium IX spark plugs are designed to last and perform well throughout their life, the high price tag is something to consider.