Posted 9/23/2012 18:00 (#2605619 - in reply to #2605577) Subject: Re: 2008 Ford 5.4L tune-up ?
SE MN
I think there is a tag (white sticker) on one of the cam covers of the engine that would tell you the date the engine was built. Otherwise I believe you can take your VIN to a Ford dealer when you get parts and they can tell you which plugs you have the good ones or ones that break.