Yukon Gear 1541H Alloy Replacement Rear Axle for Dana 60 w/Length of 34-36.5in
If a 3/4 or 1-ton truck with a full-floating Dana 60 rear has a twisted shaft, a cracked flange or splines worn to a point, this is a replacement shaft you can size to your housing. Yukon YA FF30-36.5 is a new 1541H alloy, 30-spline Dana 60 rear shaft with an 8-bolt drive flange on an 8 x 3.96 inch pattern, covering the 34 to 36.5 inch range.
In a full-float rear the wheel hub rides on its own pair of tapered bearings on a spindle bolted to the housing. The shaft does not hold the truck up. It only turns the hub, with its splined inner end in the carrier side gear and its flange bolted to the face of the hub. Yukon's tech notes describe exactly that difference: a semi-float shaft carries the vehicle weight, a full-float shaft does not. That is why a full-float shaft can be pulled with the truck sitting on the ground, and why a broken one usually leaves you with a truck that still rolls but will not drive on that side. The trade-off is that every bit of torque in a loaded or towing truck goes through that one bar of steel and its 30 splines.
Hub bearing noise in a full floater comes from the hub and spindle, not the shaft, so do not replace a shaft to cure a growl. A broken shaft sets no trouble code.
Remove the flange bolts, break the flange loose and slide the shaft straight out. Check the splines, look down the shaft for twist, and measure it the way Yukon specifies for full-float shafts: from the end of the splines to the front surface of the mounting flange. Our Dana 60 rear axle problems and rebuild cost guide explains the carrier, pinion and hub failures that can sound like a shaft, and the full-float vs semi-float guide helps if you are not sure which rear you have.
This shaft is for Dana 60 full-float rears with 30-spline side gears and an 8-bolt flange on the 8 x 3.96 inch pattern. Yukon publishes no vehicle table for it. One note: the product name and part number put it at 34 to 36.5 inches, while Yukon's bullet list repeats the 31 to 33.5 inch wording from the shorter version, so measure your old shaft and confirm it falls in the 34 to 36.5 inch range. Count splines too. A 35-spline carrier needs the 35-spline Dana 60/70/80 shaft, and a shorter housing needs the 31 to 33.5 inch shaft. If you are unsure, send us the year and VIN. Browse more in our hard parts collection.
New, in stock and shipping the same business day from the USA.
| Brand | Yukon Gear & Axle |
| Part number | YA FF30-36.5 |
| Fits | Yukon Gear 1541H Alloy Replacement Rear Axle for Dana 60 w/Length of 34-36.5in |
| 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.
Per Yukon, measure from the end of the splines to the front surface of the mounting flange. This shaft covers the 34 to 36.5 inch range.
No. YA FF30-36.5 is 30 spline. A 35-spline carrier needs the YA FF35-36.5 shaft.
The hub bearings still carry the wheel, so the truck usually rolls, but pull the broken shaft and cover the hub before moving it. With an open carrier you will have no drive at all.
No. On a full floater the hub bearings ride on the spindle, not the shaft. Service the hub bearings for noise.
A new flange gasket every time, and inspect the spider gears and side gear splines; replace them if they are worn or chipped.
