NGK (6544) IMR9D-9H Laser Iridium Spark Plug， Pack of 1<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Laser welded Iridium center electrode tip ensures high durability and greater spark</li><li>Platinum disc welded to backside of ground electrode provides long life</li><li>Longer insulator nose prevents fouling， the corrugated ribs on insulator prevents flashover， and a triple gasket seal eliminates combustion gas leakage</li><li>Faster starts and quicker acceleration</li><li>Better fuel economy and lower emissions， trivalent metal plating for superior anti-corrosion and anti-seizing</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31oJ96tuWNL.jpg" noproxy>