* Engine Bay Label/Sticker: Look for a sticker or label on the engine itself, often on the valve cover or a nearby component. This will usually clearly state the engine's displacement (e.g., 2.0L, 3.5L, 5.0L). The sticker might also contain other important engine codes.
* Vehicle Identification Number (VIN): The VIN contains information that can be decoded to reveal the engine. You can use online VIN decoders (many are free) or consult a Ford dealer to determine the engine size from the VIN. This is the most reliable method if the engine bay markings are missing or unclear.
* Engine Casting Numbers: The engine block itself will have casting numbers. These numbers are usually found on a flat surface of the block. While not directly showing the displacement, these numbers can be cross-referenced with Ford engine identification charts or databases to find the engine size and model.
* Owner's Manual: If you have the owner's manual for the vehicle, it will specify the engine size and type.
* Registration Documents: In some jurisdictions, vehicle registration documents will list the engine displacement.
Important Note: The engine size (displacement) is often expressed in liters (L) or cubic centimeters (cc). Remember that 1000 cc = 1 liter. You might also see the displacement described in cubic inches (ci), though this is less common on more modern Fords.