Bosch (4459) HGR9DQP Platinum +  4 Spark Plug, (Pack of 1)
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<b>[Product Information]</b><br>
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<li>Revolutionary surface air gap firing technology featuring four yttrium-enhanced ground electrodes delivers the longest, most powerful spark for ultimate engine performance</li>
<li>Four yttrium-enhanced ground electrodes provide optimum access to the air/fuel mixture for the most efficient combustion, plus the yttrium alloy ground electrodes reduce gap wear and oxidation for extended performance life</li>
<li>Electrode gap is factory set to provide ease of installation - never requires adjustment</li>
<li>Never requires gapping,  the electrode gap is factory-set and never requires adjustment</li>
<li>Provides ease of installation - never requires adjustment</li>
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