100% Brand New and High QualityThe 4x4 or 4WD Auto Locking Hubs are located on the front wheel hubs of your for Ford F250, F350, F450, F550 Super Duty, Ford Expedition, Excursion, or Lincoln Navigator.These hubs connect to the axle assemblies and control how power is transferred from the axle to the fronts wheels of your truck.If your 4x4 system is not working properly a failing actuator is likely the cause.This actuator is a direct replacement for both the front right (passenger side) and front left (driver side) actuator on your for Ford.Fits the following vehicles:for Ford F250 1999, 2000, 2001, 2002, 2003, 2004for Ford F350 1999, 2000, 2001, 2002, 2003, 2004for Ford F450 1999, 2000, 2001, 2002, 2003, 2004for Ford F550 1999, 2000, 2001, 2002, 2003, 2004for Ford Excursion 2000, 2001, 2002, 2003, 2004, 2005for Ford Expedition 2001, 2002for Lincoln Navigator 2001, 2002.Replacement restores Four-Wheel Drive (4WD) to proper performanceReplace the part, not the assemblyDirect fit for ease of installationOriginal Equipment Part Number: 1C3Z3B396CBInterchange Part Number: 600-203, 600203, 4H7J8FMaterial:Plastic + Metalcolour:BlackPackage Contents:1 X Locking HubsOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.