On a thermostat the coils always face the engine and the dome faces the radiator hose.
The hot coolant heats the coils and causes them to contract opening the ''valve" to let coolant through the hose and into the radiator.
Hope this helps!
The hot coolant heats the coils and causes them to contract opening the ''valve" to let coolant through the hose and into the radiator.
Hope this helps!