crazyaces

I've got about 25k on Bosch and suddenly lost all power above 3000 rpm and am down to 10mpg. All due to plugs. Changed them out and I'm back in the game. NEVER using them again

RSR

Yup.

NGK (my preference for spark, including wires) or Denso.

thefishguy77

iTrader: (1)

X2 on denso or ngk for a close second

yotaparts

ngk are hard to beat, that being said, I run cheap autolite on all my rigs.

NewToYota

I know this thread is old, but I wanted to add another vote for NGK for any new folks like myself. Bought my vehicle with a stripped out spark plug hole in the cylinder head. After I tapped the head and installed new thread insert I put in a set of dual prong NGK and this thing runs beautifully. I have run $8 or more a piece iridium plugs in my small blocks forever and have never gotten the same performance that I am getting from these $3 NGK plugs. Best $18 bucks I've spent on a vehicle in a long time.