Ram 3500 rear axle
 

I am trying to work out whether i can use an axle labelled up 52104 665 when my original is labelled up 52104 669?

What does the 665 and 669 mean?

Im going to guess and say you have a 04 or 05 ram and Im thinking that 52104 is MFG date code 5-21-04 and 669 or 665 is the number off the line produced for that date code

so does this mean that they would be the same axle, just different number off line