Ford Super Duty Manual Locking Hubs Pair 600-204

This is a left and right pair of front manual locking hubs, replacing Ford 1C3Z-3B396-DA and aftermarket 600-204 / 600-204XD. Listed fitment is 2001-2004 F-250, F-350, F-450 and F-550 Super Duty 4WD, 2001-2005 Excursion, 2001-2002 Expedition and 2001-2002 Lincoln Navigator. The listing specifies hubs with the 1C34 prefix tag only, so read the tag on your old hub before ordering.

The manual hub locks the front wheel hub to the axle shaft when you turn the dial to LOCK. Worn or broken hubs cause grinding or clicking from the front wheels in 4WD, a dial that turns but never engages, or 4WD that only drives one front wheel. Water getting in and rusting the internal clutch ring is the common failure on trucks that sit.

Replacement is done at the wheel with the tire off. Remove the hub retaining bolts, pull the old hub off the wheel bearing flange, clean the mating surface and the axle shaft splines, then install the new hub with a new O-ring and torque the bolts to the Ford specification in a cross pattern. Turn both dials to LOCK and check that the front axle turns with the wheels before going back to FREE.