SKU: 43154425927

1899 2001-2007 496 8.1L Chevy GMC water pump

Sale price$163.75 Regular price$181.95
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Description

1899 2001-2007 496 8.1L Chevy GMC water pumpIf you're hauling weight and there is limited airflow your big 496 8. 1L might just start running hot. Flowkooler has a solution. FlowKooler designed a high flow water pump for the 496ci block with a CNC machined billet impeller. It has an increased vane count and a reduced impeller vane clearance to the volute. 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

If you're hauling weight and there is limited airflow your big 496/8.1L might just start running hot.  Flowkooler has a solution.  FlowKooler designed a high flow water pump for the 496ci block with a CNC machined billet impeller.  It has an increased vane count and a reduced impeller vane clearance to the volute.  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 hot BBC 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.  This is particularly true when your truck is hauling weight under a load and there is limited airflow.

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
Fan Hub Working Height 6"
Inlet Outside Diameter 1 3/4"
Hose Connections 1st 2nd
Gender M NA
Diameter 1" NA
Threaded No NA
Other Special Features:
  • CNC Aluminum impeller 16 blade swept vane 
  • Protected with a Type II Class II Military grade surface coating
  • Alternative Part Numbers 12558862, 12573929, 88893906, 89017693, 89017771
Parts Contained in Box:
Mounting Gasket, Installation Sheet, FlowKooler Decal
Make Model Year Block CID Liters
chevrolet avalanche 2500 06-02 V8 496 8.1L
chevrolet silverado 2500 07-01 V8 496 8.1L
chevrolet silverado 3500 06-01 V8 496 8.1L
chevrolet silverado 3500 Classic 2007 V8 496 8.1L
chevrolet suburban 1500/2500 06-01 V8 496 8.1L
gmc sierra 2500 hd 06-01 V8 496 8.1L
gmc sierra 2500 hd Classic 2007 V8 496 8.1L
gmc sierra 3500 07-01 V8 496 8.1L
gmc sierra 3500 Classic 07-01 V8 496 8.1L
gmc yukon xl 2500 06-01 V8 496 8.1L

 

An 8.1L is commonly used in a mercuiser. A customer told us he had a problem installing his but we could not understand what his issue was through his anger. Please do not purchase this pump for a boat; we don't have it in us anymore.

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: 43154425927

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Rebekah
West Palm Beach, US
★★★★★ 5
Love!
Size: Large, Color: (100) White / White / Mod Gray
Ive tried so many no show socks but I love these. This is the 3rd set I've bought. They never slip off and the material is thin and breathable. Perfect for working out.
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Reviewed in the United States on March 2, 2026
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Becky
Bozeman, US
★★★★★ 5
True no-show socks that don’t slide down!
Size: Medium, Color: (100) White / White / Mod Gray, Size: Medium, Color: (100) White / White / Mod Gray
This is the first pair of no-show socks I’ve tried that actually don’t slide down into my shoes. Trust me… I have tried lots of different pairs and this is the one! They fit perfectly. They’re not too thick and they’re obviously durable because I wash them after each wear, so daily.
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Reviewed in the United States on March 21, 2026
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Raquel Hall
Lake Worth, US
★★★★★ 4
Great fit but expensive
Size: Medium, Color: (252) Blush Beige / White / Castlerock
These are really great socks. I love them, but they are definitely pricey.
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LacyConner
Chelsea, US
★★★★★ 5
Great socks!
Size: Medium, Color: (252) Blush Beige / White / Castlerock
Love these socks so much I got a second package. I like how thin and airy they are and they never slide down my heel. For thin socks they’re pretty durable.
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Cor vW
Lake Worth, US
★★★★★ 5
Great
Size: Medium, Color: (001) Black / Black / Pitch Gray
The best pair of work / workout / casual socks I've bought in long time! They're no show on all my sneakers, incredibly comfortable and they never move.
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Reviewed in the United States on October 7, 2025

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