On a 2003 Ford Windstar SE, the freeze plugs (also known as core plugs) are located on the engine block. Typically, you can find them on the sides and rear of the engine, near the cylinder heads. They are usually made of metal and can be circular or oval in shape, serving to prevent coolant from freezing and expanding within the engine. Accessing them might require removing certain components, depending on the specific location of each plug.
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