Driveshaft & Axle
Locking Hub
A locking hub connects or disconnects the front wheels from the front axle on many four wheel drive vehicles. We list 33 locking hubs from $42 to $342 for vehicles from 1985-2022, from Warn, Mile Marker, SKP and Dorman, with fits for the Ford F250 and F350 Super Duty, Explorer and Ranger and the Suzuki Samurai.
Shop locking hub by vehicle
What locking hubs do
When the hubs are unlocked, the front wheels spin freely and the front axle shafts stay still in two wheel drive. That reduces wear and drag. When you lock them, the wheels and axle turn together so four wheel drive can drive the front wheels.
If the hubs do not engage, the transfer case may be in four wheel drive but the front wheels will not pull.
Manual versus automatic
Manual hubs have a dial on each front wheel that you turn to lock or free. They are simple and positive. Automatic hubs engage on their own when you shift into four wheel drive and apply power. Both types appear in this category.
Some owners switch from automatic to manual hubs for more reliable engagement. Check that the kit fits your axle and spindle before converting.
Signs of trouble and install tips
Grinding or clicking from the front wheels in four wheel drive, hubs that will not lock or unlock, or no front pull in four wheel drive point to worn hubs. Water inside the hub is a common cause.
Hubs are usually replaced in pairs. Support the vehicle on jack stands and follow the procedure for your axle. Pack bearings and use new seals where needed. Check spline count and the fitment table before ordering.
Locking Hub questions
What is the difference between manual and automatic locking hubs?
Manual hubs require you to turn a dial at each wheel to lock them. Automatic hubs engage on their own when you shift into four wheel drive and drive.
Should locking hubs be replaced in pairs?
Yes. Replacing both front hubs keeps engagement even on each side and matches the wear on both wheels. Mixing a manual hub with an automatic hub on the same axle is not recommended.
Why do my front hubs grind in four wheel drive?
Worn internal parts, water inside the hub or a hub that is only partly engaged can cause grinding. Inspect the hubs and replace them if worn.