Where is thermostat on a 94 Mazda b2300?

In a 1994 Mazda B2300, the thermostat is located in the engine block, specifically at the end of the upper radiator hose where it connects to the engine. To access it, you'll need to remove the upper radiator hose and the thermostat housing, which is secured by bolts. Once removed, you can replace the thermostat as needed. Be sure to allow the engine to cool before starting this process to avoid burns.