Denso 5345 Spark Plug Review

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…