Features and Benefits:
Designed specifically for these engines: Ford 4.6L V8 2 valve heads 1997-1999 4.6L V8 2 valve heads2000 and later 4.6L V8 3 valve heads2007 and later 5.4L V8 2 valve heads1997-2004 5.4L V8 3 valve heads2005 and later 6.8L V10 2 valve heads1999-2008 6.8L V10 3 valve heads2008 and later Chrysler 3.7L V6 2 valve heads 2005 and later 5.7L V8 Hemi 2 valve heads 2004 and later