whats this tag mean?

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Jun 12, 2012 | 01:54 PM

condemned1371

Thread Starter

Newbie

Joined: Nov 2011

Posts: 24

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Model: Cherokee

whats this tag mean?

i pulled this tag from my front differential cover. what does these numbers mean?
first line-520903973
second line- 73 610663-2

Jun 12, 2012 | 02:23 PM

odgreen

CF Veteran

Joined: Nov 2010

Posts: 15,581

Likes: 8

From: some small town oregon

Year: 1989

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by condemned1371

i pulled this tag from my front differential cover. what does these numbers mean?
first line-520903973
second line- 73 610663-2

production numbers

Jun 12, 2012 | 02:38 PM

The Black

Senior Member

Joined: Apr 2009

Posts: 954

Likes: 2

From: New Waverly, Tx

Year: 1997

Model: Cherokee

Engine: Used engine just put in less than 79kmiles onit jeepersCreepers 60mm TB, '99-'01 intake, BorlaHeader

Are those the only numbers on it?

Jun 12, 2012 | 02:38 PM

condemned1371

Thread Starter

Newbie

Joined: Nov 2011

Posts: 24

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Model: Cherokee

Quote:

Originally Posted by odgreen89on35s

production numbers

could you elaborate? im looking for the gear ratio

Jun 12, 2012 | 02:53 PM

odgreen

CF Veteran

Joined: Nov 2010

Posts: 15,581

Likes: 8

From: some small town oregon

Year: 1989

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by condemned1371

could you elaborate? im looking for the gear ratio

See the 3973= 3.73.

Other numbers are just casting codes and date codes.
Also the single 73 prob has or had a 3. In front of it that either your missing or has eroded away.

Jun 12, 2012 | 02:54 PM

Bustedback

CF Veteran

Joined: Feb 2010

Posts: 12,367

Likes: 23

From: Oroville, CA

Year: 1995

Model: Grand Cherokee

Engine: 4.0 with all of the noise and clatter

Quote:

Originally Posted by condemned1371

could you elaborate? im looking for the gear ratio

The part number of the axle and factory date codes of where and when the axle was built. There should be another tag with the gear ratio on it.

Jun 13, 2012 | 12:38 AM

jnicewan

Senior Member

Joined: Dec 2010

Posts: 698

Likes: 2

From: Norman, OK

Year: 95

Model: Grand Cherokee

Engine: 4.0

610663-2, This is the number that would be the most useful. It is the Axle Bill of Material number. Basically it is the breakdown of what the axle is for, application, parts, ratio, diff type, etc.

Use this link to find out more info about that axle, plug in the number above and see what you find. There is all sorts of cool stuff on their website about axles and stuff, the literature/catalogs are handy for reference too.

http://www2.dana.com/expert/