http://www.e3sparkplugs.com/news/with-design-changes-and-a-set-of-ford-spark-plugs-the-next-f-150-is-built-for-fuel-efficiency/1842/2011-ford-harley-davidson-f150 E3 Spark Plugs News, Racing Events & More Fri, 19 Oct 2012 21:33:56 +0000 hourly 1