Description Genuine OEM Ford Motorcraft Updated Spark Plug Set Fits F-150 04-08 5.4L & F-250/350 6.8L Updated SP-546 – Supersedes SP-515 *NOTE: IN 2008 FORD CHANGED TO A MODEL 509 SPARK PLUG. IF YOU HAVE FACTORY BLACK COIL BOOTS THEN YOU WILL NEED THE SP-546. IF YOUR COIL BOOTS ARE BROWN , YOU WILL NEED MODEL 509. 2 Year Warranty
