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1795 2001-2005 6.6L Duramax Diesel hi flow water pump

$867.00 $202.98

1795 2001-2005 6.6L Duramax Diesel hi flow water pump

$867.00 $202.98

Once we developed the first diesel pumps, the customers started calling and asking for the next.  We designed an impeller with a larger eye, an increased vane count and a reduced impeller vane clearance to increase flow and prevent overheating for big vehicle that are under a load.  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 first hi flow pumps and continues to improve impeller design. Why is increased flow so important to cooling a Cummins engine? Because it has been proven time and time again that reducing the cycle time between the heat source and the heat sink creates more opportunities to shed heat and drop engine temperatures.

From 0-3,300 RPM…Nothing Beats a FlowKooler!

General Specifications:
Type of Material of Pump Body Aluminum
Number of vanes on Impeller
Direction of Rotation CW
Other Special Features:
  • CNC machined aluminum impeller with
  • Protected with a military grade Type II class II surface coating
  • Alternative part numbers: Wagler WCPC66125.1, 
Parts Contained in Box:

O ring, Mounting Gasket, Installation Sheet, FlowKooler Decal

Make Model Year Engine Liters
2001 - 2005 Chevrolet Silverado 2500 HD V8 6.6L
2001 - 2005 Chevrolet Silverado 3500 V8 6.6L
2001 - 2005 GMC Sierra 2500 HD V8 6.6L
2001 - 2005 GMC Sierra 3500 V8 6.6L
2003 - 2005 GMC TopKick C45000, C5500 V8 6.6L
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