If it stops storming i can go look for a BOM number.

 

Here.

 

I have a locked front and rear Dana 44 in my JK Rubicon, I can get you specs for it as well if you would like.

 

So they are slightly larger than 2.75". As you can see from the ubolts here, a MJ D35 vs A MJ D44, my D44 is slightly larger than the old D35. (Yes the D44 bolt has a crack in it....)

 

yes that will be good. I'm wondering about JK rubicon axles as well

 

Where the BOM is, there's nothing but rust. That's of no use to me.

 

What's a BOM?

 

bill of material

 

Where's it supposed to be?

 

Sorry it's not more XJ related, but for my JK, here are my D44 numbers:

Rear axle tube ~ 3.162 inch
Front axle tube ~ 2.518 inch

Specs via Chrysler build sheet:

Next Gen. Dana 44 HD Front Axle
Next Gen. Dana 44 HD Rear Axle
Tru-Lok Front & Rear Axles
4.10 Axle Ratio

 

Measurements of mine showing larger than 2.75"

 

I believe they make more than one D44 because one is considered HD (heavy duty) and one is SD (standard duty).

The ones intended for towing or locking are probably thicker to accommodate for better built parts. The ones intended for everyday driving are probably thinner for economics.

The D44 on my JK on the rear has what looks like a tiny factory truss, but the front one looks more like a D30 with no trussing at all. Still, Chrysler calls mine "HD." There are so many different variations of D44 that maybe Chrysler just went and changed their design between years for the XJ to provide upgrades or cost efficiency.

 

Still need info? I can check my XJ D44 after work today.

 

It wouldn't hurt to add your input.
Now, i found that GM had a rear D44 that was a 3" tube diameter. Starting to wonder if someone swapped this axle to the parts MJ..

 

Don't have a 44 but the amc 20 in my Comanche is 2.768"



And my open diff Chrysler 29 spline 4.10 axle is 3.016