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Review on NGK 4344 LTR5IX-11 Iridium IX Spark Plug - Pack of 1 by Dale Toth

Revainrating 5 out of 5

Very satisfied. However

Increased fuel economy by 9 mpg. Very satisfied. However, they are not pre-calibrated, so make sure you have a feeler gauge handy.

Pros
  • Quality construction
Cons
  • Concise manual