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E3 Premium Diamond Fire Electrode Spark Plugs (03-04 Cobra; 07-14 GT500)

Item 405682
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Market Price $53.99 You Save 12% ($6.39)
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$47.60 (set)

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      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • High-Performance Spark Plug
      • With DiamondFire Electrode Design
      • Designed For Quicker Starts
      • Offers Reduced Emissions
      • For Improved Fuel Efficiency
      • Made From High-Quality Materials
      • With a 0.708-Inch Spark Plug Reach
      • 5 Year / 100,000 Mile Limited Warranty
      • Fits All 2003-2004 Ford Mustang Cobra And 2007-2014 GT500 Models


      High-Performance Spark Plug. There’s nothing more annoying than a fouling spark plug, and your Ford Mustang deserves better. Replace your old, failing spark plug with this E3 Premium Diamond Fire Electrode Spark Plugs. It is built for efficient and quicker starts. Featuring DiamondFire electrode technology, this high-performance spark plug can increase power by up to 12% and fuel efficiency by up to 13%, depending on your engine class.

      Great Design. This E3 spark plug features a revolutionary design and uses an advanced technology that allows the flame front to grow unhindered. This way, you’ll get a complete burn and get increased power without expending too much fuel. In addition, this process gives off a cleaner combustion process which results in lesser toxic emissions.

       Superior Quality. The E3 spark plug is made from high-grade nickel and copper materials for long-lasting quality. The plug has three legs that properly secure the DiamondFire electrode to the shell. Stable and properly seated plug results in excellent heat transfer and creates more turbulence in the cylinder. Aside from efficient performance, the DiamondFire technology also eliminates a great percentage of performance inhibiting carbon deposits, which in turn, significantly extends the plug life.

      5 Year / 100,000 Mile Limited Warranty. This spark plug includes a 5-year or 100,000-mile limited warranty from E3. As such, the plug you buy is guaranteed to provide efficient performance and be free from defects in material or workmanship.

      Application. This E3 Premium Diamond Fire Electrode Spark Plugs is specifically designed for use on 2003-2004 Ford Mustang Cobra and 2007-2014 Mustang GT500 models.

      Fitment: 2003 2004 2007 2008 2009 2010 2011 2012 2013 2014 Details

      E3 E3.53

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (4) Spark Plugs

      Customer Reviews (22)

        Questions & Answers

        10 More Questions

        Will It Fit My Mustang

        • Cobra - 03, 04
        • GT500 - 07, 08, 09, 10, 11, 12, 13, 14