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Review on ACDelco Professional RAPIDFIRE Spark Plug Replacement Parts best: Ignition Parts by Rico Posley

Revainrating 5 out of 5

Very happy with the quick lights

I installed this kit on my 1988 K5 Blazer and you couldn't tell the difference. The old spark plug for my truck was an AC Delco CR43TS and they had a .35 gap and when I was done I put in a set of AC Delco #1 Rapid Fire spark plugs and corrected. I'm very happy with the speedguns. hot spark is very noticeable

Pros
  • Spark Plugs
Cons
  • Fits