Review on NGK 4091 Spark Plug by Michael Altayeb

This spark plug is just what my automotive needs! The ignition parts category has offered me so many sub-par choices in the past, but this replacement part from NGK is the real deal. Thanks to my knowledge gained in practice, I was able to install it quickly and easily... It`s been running smoothly and efficiently since. The pros of this spark plug are definitely its quality and ease of installation. The only con would be the cost BUT it is well worth it for the performance upgrade. Highly recommend it!