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Review on πŸ”₯ ACDelco GM Original Equipment R42LTS Conventional Spark Plug: Enhanced Performance and Reliability for Your Vehicle by Vincent Poolaw

Revainrating 5 out of 5

Best Copper Spark Plugs for 89 Trans Am Turbo

I use these .035 gap spark plugs in 89 Trans Am with 3.8 liter turbo engine. I change them every few years to make sure they are performing as well as possible.

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Cons
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