These Ford Racing Camshaft Bolts are made from high quality materials and is a part that you can trust to fit perfectly and do its job correctly. Ford Racing Camshaft Bolt are required when changing camshafts on any 4.6L 3V engine in all 2005-2010 Mustangs. If you are upgrading to something bigger and beefier with more brawn, you will need to new camshaft bolts to do so. The bolts Ford uses are one time use only, torque to yield style bolts. This means that once they are used and tightened down then removed, they are useless and cannot be and should not be re-used! So if you are changing out camshafts in your 2005, 2006, 2007, 2008, 2009 or 2010 Mustang with a 4.6L 3V Engine, or have broken or misplaced your set of camshaft bolts, this is the exact part you want to pick up. Specifically designed and made for just this job, you know you'll have the right part!