The correct oil level is approx .5 - 1 inch below opening.
Top of the rear axleTop of the rear axle
Front axle is a 9.25 American Axle Rear axle is a 10.5 American Axle
It is an American Axle 10.5 inch
A 2004 did not have a Dana 80. That is an American Axle 11.5 inch. The parts are not interchangeable.
On the rear axle?
The fill plug is on the rear cover of the differential. Remove the rear cover to drain the fluid.
Inside the rear axle.
You can look on the rear axle carrier housing at the metal tag to know what type of rear end is in a 2004 Ram 1500, two-wheel drive.
Tire, rotor, u joint, bent axle shaft, etc.
The 2004 Dodge Durango has 57.2 in. of rear hip room.
The 2004 Dodge Durango has 39.2 in. of rear head room.
The 2004 Dodge Durango has 37.4 in. of rear leg room.