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Review on Genuine SP580 Iridium Spark Plugs by Michael Patilla

Revainrating 5 out of 5

According to the description all with the same gap 0.032 "

I ordered 6 for 3.5l eco-boost for Ford F150 2015. All the candles were with the same gap 0.032" +/-. Replacing the spark plugs fixed engine misfire issues and increased mileage from 15.7mpg to 17.2mpg city.

Pros
  • good thing
Cons
  • compatibility