8pc Ford Motorcraft Pzh14f Plugs F-150 Expedition 5.4 3v 2004 2005 2006 2007 2008 8 pc OEM Ford Spark plugs Platinum alloy enhancement in fine-wire form on center electrode and pad form on ground shield strap Two platinum alloys (Platinum nickel and platinum iridium) Conducting glass-seal terminations and carbon-based resistor