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Review on ACDelco GM Original Equipment 41-122 Iridium Spark Plug: The Perfect OEM Choice by Eric Carr

Revainrating 5 out of 5

Spark Ignition Parts

that's a spark plug for goodness sake. either it works or it doesn't work. it worked well. This is an OEM replacement if that's what you're expecting

Pros
  • GM engineers design and test genuine parts specifically for your Chevrolet, Buick, GMC or Cadillac vehicle
Cons
  • I won't say anything