Where is the location of thermostat on a 1986 Mazda 323?

On a 1986 Mazda 323, the thermostat is located in the engine compartment, typically near the engine's cylinder head. You can find it by tracing the upper radiator hose to where it connects to the engine, which is where the thermostat housing is situated. It is usually secured by bolts and may require removal of the hose for access.