ACDelco 9G Professional Glow Plug (Pack of 1)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Designed to give diesel engines the heat they need for cold starts</li><li>The ACDelco Professional Glow Plugs can function under higher voltages than other glow plugs</li><li>GN-type regulating coil</li><li>Self-regulating to control electrical flow from battery as temperatures rise to avoid overheating</li><li>Full range of reaches – from 21 mm to 40 mm – to meet chamber requirements in a wide variety of applications</li></ul></div><img src="http://ecx.images-amazon.com/images/I/21Mkg0tFicL.jpg" noproxy>