1997 Jeep Cherokee Sport - Keep The Spark Alive
With the plugs removed, we installed the new Bosch plugs, careful not to overtighten them. The Bosch plugs feature a platinum center electrode and two yttrium ground electrodes. The platinum offers good conductivity of heat and electricity and also does a good job of resisting chemical corrosion and electrical erosion. Additionally, platinum virtually eliminates electrode wear, which can easily double the normal service life of a spark plug.
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