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-   -   Recommended Spark Plugs (https://www.hummerforums.com/forum/private-sale-trade-classifieds-10/recommended-spark-plugs-23801/)

drc420 04-19-2011 09:24 AM
Recommended Spark Plugs
 
My H2 has 130,000 miles and I am thinking about changing the spark plugs. What is the best suggestion for plug brands for better performance and MPG's???


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