Review on 🔥 DENSO IK20 Iridium Power Spark Plug - Set of 4 Ignition Plugs for Racing Upgrades by John Fuentes

I replaced my 50,000 mile NGK iridium plugs with these Denso iridium plugs because to be honest NGK makes poor quality spark plugs - NGK iridium plugs that only last 50,000 miles and have burned the bottom to the point where the electrodes were gone causing misfires etc. The auto parts store said Denso made a quality iridium spark plug and I might want to try it. One word describes my results - amazing - both performance and fuel economy like new and this car is 14 years old and has 195,000 miles on it. Goodbye NGK - there's a new guy in town called Denso who knows how to make great spark plugs!