Denso (3421) SK20HR11 Iridium Long Life Spark Plug， Single Plug<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Single Plug</li><li>Denso # 3421</li><li>Extra Long Life Iridium Plug</li><li>0.7mm Fine Wire Iridium-Tipped Center Electrode</li><li>Platinum Tipped Ground Electrode</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31qesPTubNL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41qHPVE9UPL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/21VrcXL5NML.jpg" noproxy>