Here are some additional places to check:
* On the timing cover: This is a metal plate located on the front of the engine, near the crankshaft pulley.
* On the cylinder head: The engine number may be stamped on the cylinder head itself.
* On the transmission: Some models may have the engine number stamped on the transmission case.
To find the engine number, you may need to:
* Clean the area: Use a wire brush or a cleaning cloth to remove dirt and debris.
* Use a flashlight: A flashlight can help you see the engine number in low-light conditions.
* Consult the owner's manual: Your owner's manual may have a diagram showing the location of the engine number.
If you're unable to locate the engine number, you can contact a Mazda dealership or a reputable mechanic for assistance. They should be able to help you find the engine number or provide other information about your vehicle.