2004-2008 Ford F-150 4x4 Auto Hub Lock Actuators Vacuum Solenoid Purge Valve OEM Front Axle, Auto Locking Hubs & Vacuum Control Solenoid Purge Valve F-150 Expedition Navigator 2004 2005 2006 2007 2008 7L1Z*3C247*A (x2) & 6L3Z*9E441*A FORD 7L1Z-3C247-A (2) & 6L3Z-9E441-A (1)