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Front axle identification |
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taterm6x 
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Joined: 09 Oct. 2018 Location: Sharpsburg, GA Status: Offline Points: 15 |
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 Topic: Front axle identificationPosted: 22 Oct. 2018 at 4:19pm |
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Looking to identify if my front axle is a Dana 25. I have not been able to uncover any markings yet except for this tag. Not sure what it means but is held on with looks like 2 small flat head screws. Looks like it reads 273 but hard to tell. Here is 2 different angles. Anyone know what this means? Thanks.
 
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SE Kansas 46 CJ-2A
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Posted: 22 Oct. 2018 at 4:23pm |
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That is a casting number that was cast into the center pig during its manufacture for identification purposes at the axle assembly plant at Dana; the company that manufactured the axle assembly.
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46 CJ-2A #64462 "Ol' Red" (bought April 1969)(second owner)(12 V, 11" brakes, M-38 frame, MD Juan tub)
U.S. Coast Guard Chief Petty Officer(ret.) U.S. Army Vietnam veteran and damned proud of it. |
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taterm6x
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Posted: 22 Oct. 2018 at 4:26pm |
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Gotcha. Thanks!
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outlw21
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Posted: 22 Oct. 2018 at 6:34pm |
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I think the dana axles have the model number cast in the housing somewhere. Right now my jeep has a ford axle and has a GP part number cast in it.
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Mark W.
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Posted: 22 Oct. 2018 at 8:43pm |
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The easiest way to ID a Jeep axle is by looking at examples of the cover shape. |
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Chug A Lug
1948 2A Body Customized 1949 3A W/S 1957 CJ5 Frame Modified Late 50's 134L 9.25"clutch T90A D18 (1.25") D44/30 flanged E-Locker D25 5.38 Since 1962 |
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flatfender47
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Posted: 22 Oct. 2018 at 11:09pm |
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Not really the best way in this case.
25, 27, 30 all use the same front cover. 25 and 27 closed knuckle. 30 open knuckle.
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1947 CJ2A 225V6 SM420 D30 PLok/D44 D/Locker Warn OD 5:38s
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nofender
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Posted: 22 Oct. 2018 at 11:18pm |
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25, 27 and 30 share the same cover pattern/shape.
Where is the breather hose? I believe all 25's were vented via the diff cover. The 27 moved the vent to the center section. But don't quote me.
That sure looks like a 27. There are really no differences in the housings. The center section is a little beefier. |
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46 CJ2a rockcrawler
46 CJ2a - 26819 46 Bantam T3c "4366" 47 Bantam T3C - 11800 68-ish CJ5 |
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taterm6x
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Posted: 23 Oct. 2018 at 2:20pm |
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I’m sure I will find the markings once I sandblast and start tearing it down. It is vented on the front cover. Here’s the best pic I have with me.
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Rus Curtis
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Posted: 23 Oct. 2018 at 3:29pm |
I found this on mine only after blasting.  |
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Rus Curtis
Alabama 1954 CJ3B Bantam T3-C |
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athawk11
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Posted: 23 Oct. 2018 at 3:38pm |
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The front is a Dana 25. The rear is a Dana 41. These are the standard axles on most CJ2As and early CJ3As.
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1- 1946 CJ2A
2- 1949 CJ3A |
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Stev
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Posted: 23 Oct. 2018 at 3:50pm |
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2X on the Dana 25 and Dana 41
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Stev
1946 CJ2A Trail Jeep (The Saint), 1948 CJ2A Lefty Restored |
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taterm6x
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Posted: 23 Oct. 2018 at 6:57pm |
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That helps alot... Just wasn't sure where to find the "25" I had already found the "41" on the rear. Thanks.
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taterm6x
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Posted: 25 Oct. 2018 at 1:33pm |
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I found a tag on my rear Dana 41 attached to one of the cover bolts. It reads 43/8 which is the 5.38 ratio. Has Dana always tagged them? My CJ2A is a 47 and just wondering if they tagged them back then (original) or if someone has swapped to a newer diff.
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athawk11
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Posted: 25 Oct. 2018 at 3:52pm |
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The tags are often lost or left off when a prior owner removes the diff cover. Lots of this kind of stuff happens over 70 years.
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1- 1946 CJ2A
2- 1949 CJ3A |
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YFICA
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Posted: 13 May 2023 at 1:54pm |
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I am looking for the placement and id of the tags bolted to the cover of the front Differential. i thought i took a pic of them both before i tore them down. one tag I found had the numbers 43 on it! I do not know if there was another one or not. 8
I would appreciate any information on this also where it was at on the bolt pattern. I saw a pic of the rear diff and i think it was on the lower right corner bolt. Thank You YFICA Russ
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Tom in RI
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Posted: 13 May 2023 at 4:46pm |
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Am I seeing the second picture wrong? It seems like the casting is 27
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Ron D
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Posted: 13 May 2023 at 4:49pm |
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Hi Russ, These 2 threads from over on the G503 site might help locate them for you.
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1951 M38
1951 M100 |
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Pinho
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Posted: 27 May 2023 at 3:48pm |
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I've got a Dana 41-2 rear axle.
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1948 CJ2A
#168139 (SN) #158379 (ACM) #J180813 (engine) |
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taterm6x wrote: