1646PSD0304 2003-2004 Ford Power Stroke Diesel 6.0L water pumpSave the ocean and dump the plastic impeller. FlowKooler designed a high flow water pump for the 6. 0L Power Stroke Diesel with a CNC machined billet impeller. It has an increased vane count and a reduced impeller vane clearance. It achieves greater flow rates, higher head pressure and a more efficient flow. The impeller color is due to Type II Class II military grade surface coating which protects against corrosive fluids. FlowKooler introduced the