Front Locking Hub Vacuum Solenoid Tube Harness is a direct fit for the following:

1999-2004 Ford F-250 Super Duty
1999-2004 Ford F-350 Super Duty
1999-2004 Ford F-450 Super Duty
1999-2004 Ford F-550 Super Duty
2000-2005 Ford Excursion
-With 4x4 / 4WD

Genuine Ford Part Number: F81Z-3C124-AA