It is under the housing that the upper radiator hose hooks to on the engine.
first, remove the old thermostat, then...........................install the new one
No, they are not interchangeable.
YES
Yes.
No.No.
It is between the bottom radiator hose and the engine; you will have to take the hose off to see it.
A 2004 Ram 1500 has a 45rfe transmission.
yes
18.7 liters in a radiator flush and fill in a 2004 Dodge Ram 1500.
yes, same bolt pattern
265 70 17? if Yes, then yes
A 2004 Ram does not have a timing belt.