* 4.2L V6: This was a smaller, less powerful option.
* 4.6L V8: This was a more common and popular choice.
* 5.4L V8: This was a larger displacement V8, offering more power than the 4.6L.
To know the exact engine size of a specific 2004 F-150, you'd need to check the vehicle's paperwork (like the title or owner's manual) or look at the engine itself.