Probably in a removable housing at the engine end of the upper radiator hose
It is under the housing where the lower radiator hose hooks to the engine.
Contrary to every other car and truck that I have worked on, the 2004 Dodge Durango has its thermostat located on the bottom radiator hose. A close inspection of the bottom hose where it connects to the engine will show you the thermostat housing.
4.7L it is where the lower hose hooks to the engine. 5.2L, and 5.9L it is where the upper hose hooks to the engine.
show pic's of replacing thermostat on dodge durango
The spring side goes into the engine.
Usually in a housing located at the engine end of the upper radiator hose I have an 01 Durango with a 4.7 and the thermostat is in the lower radiator hose at the engine end.
The thermostat on a 4.7L is under the housing where the lower radiator hose hooks to the engine.
On a 5.9L the thermostat is under the housing that the upper radiator hose hooks to on the engine.
Should be at the engine end of the upper radiator hose
The 2006 Dodge Durango has a V6 engine.
The 2002 Dodge Durango has a V8 engine.
The 2011 Dodge Durango has a V6 engine.