Yukon Gear 4340CM Right Hand Inner Rplcmnt Axle For Dana 44 / 71-77 Ford Bronco
An early Ford Bronco on bigger tires and a locked front Dana 44 asks a lot of a 50-year-old passenger-side axle shaft. Yukon Gear and Axle YA W38810 is a right-hand front inner shaft for the Dana 44, built from 4340 chromoly with 30 splines, a 27.94 inch length and a yoke sized for the 5-760X series U-joint. It is listed for the 1971-1977 Bronco and is the shaft to buy when the passenger inner is snapped, twisted or worn sloppy in the side gear.
Ford's front Dana 44 sets the differential on the driver side, so the passenger inner shaft is the long one; it runs the full width of the axle tube from the side gear to the inner yoke of the steering U-joint. The outer stub then carries the drive through the spindle to the locking hub. A long shaft winds up under load, and the 30-spline end and the U-joint yoke ears are where it usually lets go. Yukon makes this shaft from high-tensile 4340 chromoly with cold roll formed splines and induction coil heat treating, which is the reason to pick it over a plain replacement when the Bronco runs a locker or 33-inch and larger tires.
With the front on stands, the hubs locked and the transfer case in 4WD, rotate the right tire by hand. If it turns while the front driveshaft stays still, the shaft, U-joint or hub is broken. Remove the hub, spindle and shaft assembly and check the splines, the yoke and the U-joint caps. Count the splines and measure the shaft before you order: this one is 30 spline and 27.94 inches. Our Dana 44 axle problems and rebuild cost guide lists the bearing, seal and gear faults that can mimic a broken shaft.
Our listing fits this shaft to the 1971-1977 Ford Bronco Dana 44 front. Yukon's own page lists the specs (Dana 44, 30 spline, 27.94 inches, right-hand front inner, 5-760X U-joint) but does not publish a vehicle table, and early Broncos left the factory with a Dana 30 front in the earliest years and many have been swapped since, so match the axle tag, the 30-spline count and the length of your old shaft before ordering. It is not the shaft for the 1980-1996 F-150 twin traction beam Dana 44; that axle uses its own right inner shaft. The Dana 30 vs Dana 44 guide shows how to tell the axles apart, and our Ford Bronco transmission problems guide covers the rest of the driveline. If in doubt, send us your year and VIN.
Wondering if chromoly is worth it? See chromoly axle shafts vs stock.
| Brand | Yukon Gear & Axle |
| Part number | YA W38810 |
| Fits | Yukon Gear 4340CM Right Hand Inner Rplcmnt Axle For Dana 44 / 71-77 Ford Bronco |
| Vehicle fitment | Ford Bronco (1971-1977) |
| Type | Axles |
| 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.
It is the right-hand front inner shaft, the passenger side. On a Ford front Dana 44 the differential is on the driver side, so this is the long inner at 27.94 inches.
Yukon lists the 5-760X series U-joint for this shaft. The U-joint is not included.
No. It is a Dana 44 shaft. Early Broncos used a Dana 30 front in the first years and many have been swapped since, so check the axle tag and count the splines (30) first.
No. The TTB axle uses a different right inner shaft; match that axle by its own part number.
Only if it is damaged. Inspect the left inner and both U-joints while the axle is apart; matching chromoly shafts make sense if you run a locker or larger tires.
