The thermostat for a 2003 4.7 is at the end of the bottom hose not the top. The 2003 4.7 is the only one at the bottom. You have to undo the bottom hose from the engine and the gasket is the rubber around the thermostat and the spring goes on the engine side.
1. Drain cooling system and dispose of coolant properly.
2. Remove lower hose from entry at thermostat housing connected at engine block and remove thermostat housing.
3. Remove old thermostat and replace with new thermostat spring side on engine side, there is also a tab that aligns with thermostat housing to prevent improper installation.
4. Replace thermostat housing.
5. Replace lower radiator hose.
6. Fill cooling system with manufacture directed coolant and check for leaks.
7. Run engine until thermostat opens and bleed air from cooling system.
On a 5.9L the thermostat is under the housing that the upper radiator hose hooks to on the engine.
The 2003 Dodge Durango has a V8 engine.
The 2003 Dodge Durango has 16 valves.
2003 Dodge Durango 4.7 how many quarts does it take when you change the transmission filter the trans
The 2003 Dodge Durango has a 5-speed automatic.
The 2003 Dodge Durango is a gas-powered vehicle.
The curb weight of the 2003 Dodge Durango is 4379 lbs..
The 2003 Dodge Durango has a 23.8 degrees angle of approach.
The 2003 Dodge Durango runs on regular unleaded.
The maximum payload of the 2003 Dodge Durango is 1670 lbs..
The 2003 Dodge Durango's turning circle is 36.1 ft..
The 2003 Dodge Durango has a 23.4 degrees angle of departure.