DICMIC Automatic Locking Hub Kit for Ford Super Duty 1999-2004 — 2-Piece Direct-Fit Replacement (1C3Z-3B396-CB)

DICMIC 2-piece automatic locking hub kit replaces damaged or worn hubs to restore on-the-fly 4WD engagement for compatible Ford Super Duty trucks and select SUVs.

If your truck’s automatic front hub has failed or is slipping, this DICMIC replacement set is designed to match the factory fit and restore proper four-wheel drive operation. These hubs are direct-fit replacements for part numbers 1C3Z-3B396-CB, 1C3Z3B396CB and 600-203 and are engineered to work with the original axle and transfer-case interaction so 4WD locks and unlocks automatically while driving.

Which vehicles will these DICMIC hubs fit?

These hubs are manufactured to be compatible with a range of Ford Super Duty trucks and a few full‑size SUVs from the listed model years. Confirm your vehicle year, model, and axle type before ordering to ensure correct fitment.

• 1999–2004 Ford F-250, F-350, F-450, F-550 Super Duty
• 2001–2002 Ford Expedition
• 2000–2005 Ford Excursion
• 2001–2002 Lincoln Navigator

How do these automatic locking hubs work and why does that matter?

Automatic locking hubs engage and disengage the front wheel connection to the axle based on torque and transfer-case state, eliminating the need to manually twist hub knobs or stop to lock wheels. When 4WD is selected, the hub's internal clutch mechanism slides and locks; when returned to 2WD the clutch releases so the wheels turn independently, reducing driveline drag.

• Operates automatically with transfer-case engagement — no manual hub switching required
• Internal clutch/actuator aligns to transfer torque when 4WD is in use
• Reduces front differential and engine load when in 2WD, improving efficiency

What are the key features and how do I replace them?

The kit replaces OEM part numbers listed above and installs using common tools without removing the wheel in most cases. Basic steps include removing the hubcap, extracting the retaining ring, pulling out the old hub, and installing the new unit in reverse—perfect for a DIY service or quick shop replacement.

• Replaces OEM part numbers: 1C3Z-3B396-CB / 1C3Z3B396CB / 600-203
• Installation: remove hubcap, pull retaining ring, withdraw old hub, install new hub in reverse
• Designed for direct-fit replacement to original axle/hub interfaces

Will installing these hubs improve fuel economy or drivetrain life?

By allowing the front wheels to freewheel when 4WD is not engaged, automatic hubs can lower parasitic drag on the drivetrain and slightly reduce wear on front differential components. While exact fuel savings vary by vehicle and driving conditions, disengaging the front axle reduces unnecessary load during normal 2WD driving.

• Disengages front wheels in 2WD to reduce driveline drag
• Helps limit wear on front differential when not using 4WD
• Restores proper automatic engagement so 4WD functions reliably when needed

Who is this for: This DICMIC 2-piece automatic locking hub kit is aimed at owners of compatible Ford Super Duty trucks and the listed SUVs who need a like-for-like replacement for worn, damaged or non-functioning factory hubs. It’s suitable for DIY mechanics and professional shops wanting a direct-fit, cost-effective replacement to return dependable automatic 4WD operation. Verify vehicle year and part number compatibility before purchase, and contact DICMIC if you have fitment questions or need assistance.