ACDelco 41-988 Professional Iridium Spark Plug (Pack of 1)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Iridium offers better engine idle stability and smoother performance</li><li>Iridium allows for smaller， more efficient electrode designs for improved cold starting and quicker acceleration</li><li>Iridium fine-wire electrode helps improve ignition of the fuel and burns away carbon deposits on the tip of the plug as they form， to help improve fuel economy</li><li>One piece suppressor seal blocks radio frequencies that can affect vehicle electronics</li><li>Suppressor seal meters spark energy for longer electrode life and seals against combustion leakage</li></ul></div><img src="http://ecx.images-amazon.com/images/I/21YyIkKfcuL.jpg" noproxy>