Review on Denso 5345 Spark Plug by Patrick Martin

I have reviewed NGK Iridium spark plugs and they have a 0.6mm center electrode. This is 0.4mm larger than this Denso, obviously a tighter tolerance is needed to make the electrode connector 33% smaller. I would say for a dollar more you get a better fork. Very pleased so far, this is a ONE STEP COLDER spec plug for my TURBO SUBARU because I'm rebuilt to stage 2 and want to prevent any knocking or knocking in hot Southern California. no problems yet, no dropouts, purrs like a cat on a cold start. Also, the quality is MUCH BETTER than the original NGK spark plug that came from the Subaru range. GET THIS FORK IF YOU WANT THE BEST FOR YOUR WRX/STI! ! !