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South Korea, Seoul
1 Level
683 Review
47 Karma

Review on ACDelco 41 627 Professional Conventional Spark by Matthew Blustein

Revainrating 5 out of 5

GM Product - GM Parts

Runs smoothly from warm to cruise temp. Incredibly, the engine runs smoother with good old copper spark plugs than with fancy platinum pendant spark plugs that cost 4 times less.

Pros
  • Ribbed muffler gasket to increase resistance and prevent burn through and misfire
Cons
  • Paint not required