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Spark Plugs - Comer - Denso Plugs

Denso

Performance Tools

Denso

The spark plug can be an important tuning tool for your engine.  You use a hotter plug in cooler conditions and cooler plug in warmer conditions.  When you go from a cooler...
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The spark plug can be an important tuning tool for your engine.  You use a hotter plug in cooler conditions and cooler plug in warmer conditions.  When you go from a cooler to hotter plug you are leaning out the motor slightly.

The lower the number, the hotter the plug.

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