Mile Marker 449SS Pair of Premium Locking Hubs fits 1999 2004 F250 F350 F450 F550 Excursion | Built for Durability & Reliability in Extreme Off Road Conditions

After going through several pairs of the 'OEM' replacements for the vacuum-operated 'automatic' 4x4 front hub locks, I saw these and decided to pay a few extra dollars so I never have to replace the hub locks EVER again. These are SOLID, an obvious upgrade to the existing plastic-filled lockers that came on these trucks.I can get out and manually lock my hubs when I need 4x4, so it's not a great loss to have actual metal pieces doing the engaging action as a trade off. Installation was cake - it took more time to remove the siezed and broken OEM unit than it did to clean out the hub and slide these into place. It shoulhd have taken me less than 10 minutes if not for the stubborness of the old parts. Some people suggest using blue thread lock on the 6 bolts that keep everything together, but I haven't had any back out at all after several hundred miles so just tighten them up pretty good - they're literally the only parts you really have to do anything with, as everything else just slides into place.The way these are designed, you can see the interals and how everything works, and you'll know you've made the right choice here. I'm looking for shorter center caps for my factory rims, since these units are shorter than OEM lockers, but it's barely noticable so NBD. If you're looking for reliable, light-medium 4x4 upgrade bits, these are a great start to a killer off-road rig.

These Mile Marker 449 SS hubs are replacing the original equipment hubs on my 2002 F350. They are high quality throughout. Installation is very straight forward. I am completely satisfied with these hubs. They work great.

Got these for a 2000 F250 that had been converted from autolocking hubs previously. The old hubs were stuck and unable to turn. These fit well and were a breeze to swap. The tire and wheel do not have to be removed for these to be replaced. The videos that show it to be a simple swap are accurate. Hubs are now easy to lock and unlock. Took a chance to save a little money on these and don't regret it at all. They are a little shorter than some other hubs so they won't come out flush with your lug nut covers. Otherwise they fit and work great.

Work great on my 2003 f450 easy to install I would definitely buy them again

USE LOCTITE!I lost one of them on the road, it was later found, re-installed, and they still work now YEARS later!I suggest at least using some Blue Loctite on the screws. Easy install, easy to operate, have been using since September 2022, I have no complaints.Context for images, I shoved 2004 F350 axles under my 1996 F250 and painted the axles blue for some reason haha. Taken me through Mud, Snow, and outlasted my steering in some deep puddles... Couldn't steer but could move that's for sure!

easy to install should have replace them a long time ago

Nice product , well made

It took me a while to find these at a reasonable price on amazon.com and are the best buy for the buck. These premium locking hubs which are manual hasn't failed me yet since the installment.