6.0L / 6.4L Powerstroke Diesel V8 Engine Valve Stem Seal is a direct fit for the following:

2005-2010 Ford E-150
2005-2010 Ford E-250
2004-2010 Ford E-350
2004-2010 Ford E-450 Super Duty
2003-2005 Ford Excursion
2003-2010 Ford F-250 Super Duty
2003-2010 Ford F-350 Super Duty
2003-2010 Ford F-450 Super Duty

2003-2010 Ford F-550 Super Duty

Genuine Ford Part Number: 3C3Z-6571-AA