I have a rear axle from a 2013 Dodge Ram. Has only 39,000 miles on it, 4th gen. Still original paint and no leakes. No issues. I purchased it with the intentions to be put into my 2006 Dodge ram 1500. I realized only after the purchase of this rear axle that is was for a 4th gen dodge, So it will not work for my needs for a 3rd Gen. It's gear ratio is the 3.55. it's all there, the internal gears and everything.