Where is the IPR on a 2006 Ford F-350 6.0 diesel engine?

The IPR (Injection Pressure Regulator) on a 2006 Ford F-350 6.0 diesel engine is located on the high-pressure oil pump, which is situated on the front of the engine block, near the driver's side. It's typically mounted on the top of the pump and is identifiable by its electrical connector and oil inlet/outlet lines. Accessing it may require removing some components for better visibility and maneuverability.