Dana 60 front axel date code help

[KrewKabKid]

I find all kinds of pics with red arrows pointing out the date code and BOM code location on the web but none of them decipher the date codes only the BOM code. I've put every combo of questions in the search box here and come up with nothing. I've asked 3 people and have gotten 3 different answers. Here is my codes can someone please give me the correct answers so I can order parts thanks in advance. Dana 60 front axel housing 9 20 6A9 BOM 610057-5

 

[bucket]

My hunch is that the "6A9" is the date code. "6" being the 6th day of the month, "A" being the month (January) and "9" being the year (1979 or 1989). That's how many manufacturers have done it, so that is my guess here. I've never tried to decipher mine because I already know what's in them and what year they were made.

Someone here will know for sure, maybe @shiftpro or @nvrenuf will know.

 

[KrewKabKid]

My hunch is that the "6A9" is the date code. "6" being the 6th day of the month, "A" being the month (January) and "9" being the year (1979 or 1989). That's how many manufacturers have done it, so that is my guess here. I've never tried to decipher mine because I already know what's in them and what year they were made.

Someone here will know for sure, maybe @shiftpro or @nvrenuf will know.

I'm with you Bucket on the 6A9 that's my thinking as well, being is this is supposed to be a 79 axel housing I have. Another way I was told was 9 for month 20 for day 6 for year A9 was some sort of class category. Then another said the same as the above but the A9 was a factory designation I don't buy either of the 2 as being correct. I believe you're right now I need the 9 20 BOM #'s say 1979-80 Dana 60 4.10 gear ratio 41.10 cut Thanks for your input

 

[nvrenuf]

Once upon a time, Dana had an easy to use page where you could look up a BOM quickly but for some reason they killed it.

I did find the BOM on a couple of pages, the end results are;

Dana BOM (Bill Of Material) Numbers - Blue Oval Trucks

Below is a list of various BOM numbers. Ranger BOM’s are listed at the bottom of the page. Also check out our How To Identify Dana Axles page. Complete Bill Of Material information: Bill of Material Number – Manufacturer – … Continued

www.blueovaltrucks.com

610057 GM 60 FRONT 1979-80 K-30

Axle Builder | Dana 60 Identification (BOM Lookup)

Find your Dana 60 axle specifications using the bill of materials code stamped onto the axle housing.

www.axlebuilder.com

610057-5

Front

4.10

Standard

Low (4.10-)

35 Spline

Dana 60

Between the 2 sites you can glean that it’s a ‘79 or ‘80 axle, low pinion, 35 spline (inner axles) and 4.10’s.

The date stamped in the ring gear may help narrow down the year if needed. This date isn’t related to the axles date of assembly but if the date is early ’79 or older (‘78 etc) that would probably indicate a ‘79 model year.

 

[nvrenuf]

Also, ( @bucket ) check this page, scroll down to the BOM section and it explains the new Dana page and where to navigate on it to search BOM’s.

Differential Identification Guide | West Coast Differentials

Differential Identification by tags or visual clues can be used to accurately identify a differential. Tips from West Coast Differentials.

www.differentials.com

 

[bucket]

Also, ( @bucket ) check this page, scroll down to the BOM section and it explains the new Dana page and where to navigate on it to search BOM’s.

Differential Identification Guide | West Coast Differentials

Differential Identification by tags or visual clues can be used to accurately identify a differential. Tips from West Coast Differentials.

www.differentials.com

That site says the date code should be the normal-to-most XX-XX-XXXX arrangement. Perhaps it is on the axle and OP just hasn't uncovered it yet?

 

[Vbb199]

Dana 60HD
1979-1980
4.10 ratio
35 spline inner
30 spline outer
Kingpin


The Dana website doesn't provide BOM info for axles older than like, 1980 or some ****.
But these guys do:

Dana 60 BOM Numbers | Dana 60 Identification

Crawlpedia is an off-road encyclopedia featuring a complete list of Dana 60 Bill of material (BOM) codes with complet axle details.

www.crawlpedia.com

 

[KrewKabKid]

That site says the date code should be the normal-to-most XX-XX-XXXX arrangement. Perhaps it is on the axle and OP just hasn't uncovered it yet?

My stampings look the same and laid out just like this diagram 9 20 6A9 610057-5