* Top of the engine block: Often near the front or sides.
* Side of the engine block: This is a common location.
* Rear of the engine block: Less common, but possible.
* Bottom of the engine block: Difficult to access, but sometimes used.
To find it, you'll need to consult your vehicle's owner's manual or a repair manual specific to your engine. These resources will usually have a diagram showing the engine number location. You can also try searching online for "[Your vehicle's make, model, and year] engine number location." A picture search can be particularly helpful.