Featuring a 98% pure copper core and high-grade alumina silicate ceramic for improved throttle response, service life and performance.
Cold-rolled threads
Trivalent plating
Specialized ground electrode designs

Fitment
2012 Indian Chief Classic
2013 Indian Chief Classic
2012 Indian Chief Dark Horse
2013 Indian Chief Dark Horse
2012 Indian Chief Vintage
2013 Indian Chief Vintage
2003 Polaris Trail Boss 330
2004 Polaris Trail Boss 330
2005 Polaris Trail Boss 330
2006 Polaris Trail Boss 330
2007 Polaris Trail Boss 330
2008 Polaris Trail Boss 330
2009 Polaris Trail Boss 330
2010 Polaris Trail Boss 330
2011 Polaris Trail Boss 330
2012 Polaris Trail Boss 330
2013 Polaris Trail Boss 330