1688CI 1984-1991 SBC Corvette short shaft 3/4" shaft water pump
SKU: 55571043778

1688CI 1984-1991 SBC Corvette short shaft 3/4" shaft water pump

Sale price$122.35 Regular price$135.95
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Description

1688CI 1984-1991 SBC Corvette short shaft 3/4" shaft water pumpFlowkooler's pump 1688CI for the small block chevy Corvette 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 surface coated with a military grade type II Class II anodized finish. FlowKooler introduced the first hi flow pumps and

Flowkooler's pump 1688CI for the small block chevy Corvette 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 surface coated with a military grade type II Class II anodized finish. 

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 Cast Iron
Number of Blades on Impeller 16 CNC Aluminum
Direction of Rotation CW or CCW
Accessory boss 3/8" threaded @ 12 o'clock
Fan Hub Working Height 5 3/4" 
Shaft Diameter 3/4"
Inlet Outside Diameter 1 9/16"
Hose Connections 1st 2nd
Gender F
Diameter 3/4" @ 9 o'clock
Threaded Yes
Other Special Features:
  • 16 blade CNC Machined Aluminum impeller
  • Anodized with a military grade surface coating
  • threaded 3/8" boss at 12 o'clock - this does not pass fluid (unless drilled)
  • Small-block Chevy "short" Corvette applications 3/4" shaft 
  • Shaft extends past the fan hub .465" like the OE
  • Alternative Part Numbers  10048919, 12522035, 14047008, 14069586, 14094538, 19168607
Make Model Year Block CID Liters
CHECKER MARATHON 1982 V8 350 5.7L
CHEVROLET CORVETTE 84-91 V8 350 5.7L
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 55571043778

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Remo Garrovillo
Chelsea, US
★★★★★ 5
Good quality
Size: 9, Color: Cognac
Good quality and fit is true to size
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Reviewed in the United States on January 19, 2026
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Tabascoroni
Lake Worth, US
★★★★★ 5
Good quality and seem durable for the shorter term.
Size: 9.5, Color: Black
Comfortable. Great for Wedding, Funeral. Not for long term I do not think. Seem almost like patent leather
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Reviewed in the United States on February 1, 2026
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Fahim
Omaha, US
★★★★★ 1
Bad, very bad
Size: 8.5, Color: Cognac
They are plastic. The quality is zero bro then I send it to me my refund.
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Reviewed in the United States on June 5, 2026
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Amazon Customer
Alexandria, US
★★★★★ 4
Run big
Size: 11, Color: Black
Worked for what they were needed for, they run big.
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Reviewed in the United States on December 21, 2025
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Skellleton
Draper, US
★★★★★ 5
Great well made lite weight shoes
Size: 13, Color: Black/Ivory
Beautiful men’s shoes and half the price of the exact same shoes in Macys. I love this brand because they are so lite and comfortable. My son is fussy and does not like wearing dress shoes but these are so well made and lite weight there are no issues. The soles are made well with good grip and the size runs true to size (we ordered a 13). Very easy to walk in for long periods of time. Highly recomended.
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Reviewed in the United States on March 16, 2026

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