View Poll Results: Do I have a
44
4
50.00%
HD44
3
37.50%
60
1
12.50%
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Dana 44??
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6th Gear
Joined: Aug 2022
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Dana 44??
I bought a 1975 f250 highboy. I need to replace the spindle and bearings on the front axle. I’m not sure if it’s a Dana 44, hd44 or 60. The housing has the number 35133 cast into the bottom right side of the differential. How can I ID the one that I have? I
Laughing Gas
Joined: May 2015
Posts: 931
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From: Port Orchard, WA
Either Dana 44 or Dana 44HD. Are the locking hubs a big cylinder, or are they more of a tapered shape? Big cylinder is HD. Unless it was swapped in you don’t have a 60. Only a crewcab would’ve gotten it in ‘75.
Cargo Master
Joined: Nov 2007
Posts: 2,238
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Easiest way is to look on the front face of the differential casting, somewhere towards the bottom, and there will be a 44 or 60 cast into it. If you want to be 100% correct about the parts you get, wire brush off the axle tubes and find the stamped Dana BOM number.
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6th Gear
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Cargo Master
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Dana Spicer Differential Tags
Dana Spicer B.O.M. Numbers
The Bill of Material (BOM) number is used to identify Dana differentials. The BOM will identify the model number, the gear ratio, the type of differential, and all component parts. Traditional BOM’s are 6 digits followed by 1 or 2 digits and start with the numbers 60 or 61. On some tags, the first 2 digits don’t appear on the tag, but they must be used to identify the axle. For instance, you might see 5561-1 for the BOM, but the 60 has been dropped, and one would need to use 605561-1. Later BOM’s may start with the first 3 digits of 200, but these are typically not dropped from the tag.
*** The B.O.M. Numbers stamped into the long tube of the axle housing are often faint and hard to read. Using a metal scraper will typically reveal the numbers most easily. Cleaning with a wire wheel is not recommended as it usually makes the numbers harder to see ***The “Dana Expert” website is no longer available. However, the Dana Aftermarket Media Library can be used to identify all aspects of a particular axle using the Bill Of Materials number.
- Navigate to the Dana Aftermarket Media Library
- Enter the BOM number in the Keyword Search field (top left corner of the page).
- Click on the resulting literature link
- Search within the document by clicking on the Magnifying Glass at the top, or by simply using “Control-F” and re-entering the BOM number.
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