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1668 SBC Short Marine Grade water pump

$1,376.00

1668 SBC Short Marine Grade water pump

$1,376.00

Got a hot small block in your boat? Flowkooler's pump 1668 Marine for the small block chevy engine has a 16 blade skip vane impeller that is CNC machined from billet aluminum.  An increased vane count and a reduction in the plate-impeller clearance achieves greater flow rates, higher head pressure and a more efficient flow than other OEM water pumps.  It is then further protected from corrosion with a surface coating of a military spec type II Class II anodized finish. An enamel coating on the housing will preserve and protect your pump from the harsh marine environment. 

FlowKooler introduced the first hi flow pumps and continues to improve impeller design. Why is increased flow so important to cooling a hot small block 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 Black Enamel over Iron
Number of vanes on impeller 16 CNC 6061 billet aluminum
Direction of Rotation CW or CCW
Fan Hub Working Height 5 5/8"
Fan Hub studs 5/16-24 (fine)
Shaft Diameter 5/8"
Inlet Outside Diameter 1 3/4"
Hose Connections 1st 2nd
Gender F F
Diameter 3/4" 1"
Threaded Yes Yes
Other Special Features:
  • CNC Machined corrosion resistant aluminum impeller with 16 vanes
  • Impeller permits this pump to be spun in either direction
  • Impeller protected with a military grade Type II Class II surface coating
  • This pump often described as "short" a small-block short shaft pump
  • Pulley hub has both large and small bolt patterns
  • A bypass helps to circulate the coolant in the block, this ensures the uniform engine temperature instead of very hot block temperature and cooler head temperature and relieves pressure in the thermostat. Some engine builders have found that blocking the bypass hole with the dowel pin provided helps improve cooling by routing more coolant to radiator. A pin is provided for you should you need it.
  • Alternative Part Numbers  1025465M91, 1032473M91, 1035836M91, 1038300M91, 12307815, 1564459, 1565487, 3704906, 3741034, 3757247, 3769926, 3782608, 3787566, 3836856, 3848072, 3859326, 3890017, 3929233, 3937996, 3957981, 3986364, 3988207, 3998206, 3998207, 8118, 9111