• Unique design helps prevent breakage by locking the plug porcelain core to the plug hex allowing it to turn as one complete unit. • Will also pull plug porcelain core if plug hex only is removed. • Detailed Instructions to maximize success rate. • Works on: • Ford 4.6L 3V V8 engines used in 2005–2008 Mustang, 2006–2008 Explorer. • Ford 5.4L 3V V8 engines used in 2004–2008 F-Series, 2005–2008 Expedition, 2005–2008 Lincoln Navigator. • Ford 6.8L 3V V10 engines used in 2005–2008 F-Series 250-350-450.
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