Yukon Gear Hardcore Drive Flange Kit For Dana 44 / 19 Spline Outer Stubs. Yukon Engraved Caps
Older Ford, GM, Dodge and Jeep 4x4s with a front Dana 44 and manual hubs share a common complaint once they see bigger tires: the hubs give up before the axle does. Yukon Gear & Axle part YHC50007 swaps both hubs for Hardcore drive flanges sized for the factory 19-spline outer stubs, finished with Yukon engraved caps. It is the fix owners of early Broncos, K5 Blazers, F-150 and F-250 trucks and Ramchargers look for when a hub keeps slipping out of lock or breaks on the trail.
On these axles the outer stub comes through the spindle and ends inside the wheel hub. A manual locking hub uses a dial and a sliding ring to connect or release that stub. Yukon's kit replaces the whole mechanism: each flange slides onto the 19-spline stub and fastens to the wheel hub, so there is nothing left to engage or wear out. For reference, the matching single flange in Yukon's line is listed as 19-spline inner and 48-spline outer. With the flanges on, the front shafts and front driveshaft stay connected full time; you shift between 2WD and 4WD only with the transfer case lever.
With the front end on stands, lock the hubs, put the transfer case in 4WD and rotate each tire by hand while a helper watches the front driveshaft. A wheel that turns without moving the shaft has a failed hub or a broken stub. Pull the hub and inspect the 19-spline end for twisted or rounded teeth, since a damaged stub will chew up new flanges too. Then rock the stub up and down: noticeable play means the spindle bearing, axle U-joint or inner shaft needs attention before any hub or flange goes on.
YHC50007 fits Dana Spicer 44 front axles with 19-spline outer axles, which is the standard outer spline on factory front Dana 44s. Front Dana 44s were used under 1972-1979 Ford Broncos, 1959-1979 Ford half-ton trucks and many three-quarter-ton trucks, 1967-1976 GM K5, K10 and K20 trucks, Dodge Ramchargers and W-series pickups, and Jeep Wagoneers and Commandos, but hub and spindle styles changed over the years and some trucks were fitted with other axles. Count the stub splines and look at your hub mounting before ordering, or send us your year and VIN. If your axle has 30-spline aftermarket outers, you need the 30-spline flange kit instead. Browse more Dana parts in our rebuild and install kits.
Unbolt and remove the old hubs, take the snap ring off each stub, and clean the hub bore of old grease and any broken hub pieces. This is the right time to repack the wheel bearings with wheel bearing grease and set bearing preload to the service manual spec. Fit the flange over the stub, reinstall the snap ring, then bolt the flange and engraved cap on with the supplied hardware, tightening to the values in Yukon's instructions. Afterward, raise the front and spin a tire in 2WD to confirm the front driveshaft now turns with it.
If the axle is leaking at the knuckles or you are replacing seals while the shafts are out, the Dana 44 front axle seal installer seats the seal square. If you would rather keep free-wheeling, the Hardcore locking hub set for 19-spline Dana 44 is the alternative, and a worn carrier can be refreshed with the Dana 44 19-spline master overhaul kit. Front gear oil is 75W-90 or 75W-140.
| Brand | Yukon Gear & Axle |
| Part number | YHC50007 |
| Fits | Yukon Gear Hardcore Drive Flange Kit For Dana 44 / 19 Spline Outer Stubs. Yukon Engraved Caps |
| Type | Differential Install Kits |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Yes, if the outer stubs are the factory 19-spline type, which is standard on front Dana 44s. Count the stub splines to be sure, especially on a used axle that may have been upgraded.
Both are two-flange kits for 19-spline Dana 44 stubs with mounting hardware. YHC50007 comes with Yukon engraved caps, while YHC50008 comes with plain non-engraved caps.
The front axle, differential and front driveshaft turn all the time, so there is some extra drag and wear compared to unlocked hubs. Most owners who choose flanges trade that for parts that cannot slip out of engagement.
The kit includes the flanges, caps and hardware. Plan on wheel bearing grease for a repack, and new seals if you find leaks while the hub is off.
Yes. 2WD and 4WD are selected with the transfer case. The flanges only mean the front axle parts are always turning with the wheels.
