* In the fuel tank (In-tank pump): This is the most common location for the *primary* fuel pump in modern Ford F350 diesels. It's submerged in the fuel tank.
* On the engine (Lift pump): Many diesel engines also have a secondary lift pump mounted on or near the engine. This pump assists the in-tank pump.
To find the location *specifically* for your F350, you must consult your vehicle's owner's manual or a repair manual specific to your year, make, and model (including the engine type, e.g., 6.7L Power Stroke). A search online using your specific vehicle details and "fuel pump location" will also likely yield diagrams or videos.
