Yukon Gear 1541H Alloy Axle For Dana 44 JK Non-Rubicon Rear. 30 Spline / 32in Long

A bent or snapped rear shaft, a wheel bearing that growls on the highway, or gear oil soaking the rear brakes are the usual reasons a Jeep Wrangler JK owner ends up shopping for a Dana 44 rear axle. Yukon Gear and Axle YA D44JKNON is a 1541H alloy replacement shaft for the Dana 44 rear in the JK Wrangler non-Rubicon. Yukon lists it at 30 spline and 32 inches long, and it arrives as a complete assembly: shaft, wheel bearing and seal, axle retainer and ABS tone ring already in place. That last point matters on a JK, because the rear wheel speed sensors read that ring for ABS and stability control.

What the rear axle shaft does in a JK Dana 44

The JK rear Dana 44 is a semi-floating axle. The inner end of each shaft is splined into a differential side gear, and the outer end rides on a single pressed-on wheel bearing that is held by a retainer ring and bolted to the housing end. So the shaft drives the wheel and also carries that corner of the Jeep. The non-Rubicon JK uses 30 spline shafts; the Rubicon version of the same axle uses 32 spline shafts with an air locker, which is why the two are not interchangeable. Yukon makes this shaft from 1541H alloy, which it describes as stronger than stock while keeping the price down, a sensible step up once larger tires and lower gears go under a JK.

Symptoms that point to the rear shaft

• A hum or growl from one rear corner that rises with speed and changes when you load that side in a turn, usually the pressed-on wheel bearing.
• Gear oil on the inside of the rear wheel, the brake rotor or pads, from a failed axle seal.
• The Jeep will not move in gear and one rear tire spins freely, which means a broken shaft or stripped splines.
• An ABS or traction control light after axle work or a hard hit, often from a cracked or shifted tone ring.
• Wobble or vibration from the rear after rock contact, from a bent shaft or flange.

How to confirm it before you buy

Raise the rear, grab the tire at top and bottom and rock it; play there on a semi-floating axle is the bearing or shaft. Spin the wheel by hand and listen for roughness. Then pull the wheel, brake caliper and rotor, remove the four retainer nuts behind the axle flange and slide the shaft out with a slide hammer if it sticks. Check the splines, look for a bend, and count the splines: this part is 30 spline only. If your shaft has 32 splines, you have the Rubicon axle and need a Rubicon shaft instead.

Fitment

Yukon lists YA D44JKNON for the Jeep JK non-Rubicon Dana 44 rear, 30 spline, 32 inches long. The flange is drilled for both 5 x 5 inch and 5 x 5.5 inch bolt patterns; the JK uses 5 x 5. Yukon does not mark it left or right, so a pair takes two of these. The JK ran from 2007 to 2018, but confirm your axle tag reads Dana 44 and that the old shaft measures 32 inches before ordering, because axle swaps are common on these Jeeps. If anything does not match, send us your year and VIN. For gears, bearings and other driveline parts, browse our hard parts catalog.

Install notes

• Because the bearing, seal, retainer and tone ring come installed, this is a bolt-in job: clean the housing end and seal bore, slide the shaft in carefully so the splines do not cut the inner seal, and torque the retainer nuts to the factory value.
• Replace the other side at the same time if it has the same miles; rear bearings that saw the same use tend to wear out together.
• If the cover is off, check the carrier and pinion bearings. The USA Standard bearing kit for the JK non-Rubicon rear and the Yukon pinion install kit for the same axle cover a full rebuild.
• Stepping up to a locker? The Yukon Grizzly Locker for the non-Rubicon JK Dana 44 uses the same 30 spline shafts.
• Top off with 75W-90 or 75W-140 gear oil, adding friction modifier if the axle has a clutch-type limited slip, and confirm the ABS light stays off on a test drive.

Will this fit a JK Rubicon?

No. The JK Rubicon rear Dana 44 uses 32 spline shafts. This shaft is 30 spline for the non-Rubicon JK rear only.

Does it come with a new wheel bearing?

Yes. Yukon ships it with the wheel bearing and seal, axle retainer and ABS tone ring installed, so you do not need a press to fit it.

Is it a left or right side axle?

Yukon lists one 32 inch shaft for the non-Rubicon JK rear without naming a side. Order two if you are replacing both sides.

Will my ABS still work?

Yes, the ABS tone ring is already on the shaft. If the light comes on after install, check the sensor connector and that the sensor is seated in the housing.

What gear oil should I use after install?

75W-90 or 75W-140 gear oil, with friction modifier if your axle has a clutch-type limited slip. Fill to the bottom of the fill plug hole.