SKU: 38633673462

1681 1963-1977 Small Block Ford Mercury 5-9/16" CW passenger side intake water pump

Sale price$136.78 Regular price$151.98
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Ships within 48 hours · Estimated delivery Jul 31 - Aug 5

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Description

1681 1963-1977 Small Block Ford Mercury 5-9/16" CW passenger side intake water pumpSmall block Ford running hot? Flowkooler designed a high flow water pump with a CNC machined billet impeller for the CW rotation. It has an increased vane count and a reduced casting to impeller vane clearance to achieve 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

Small block Ford running hot? Flowkooler designed a high flow water pump with a CNC machined billet impeller for the CW rotation.  It has an increased vane count and a reduced casting-to-impeller vane clearance to achieve 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 Ford 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 Blades on Impeller 16 CNC Aluminum
Direction of Rotation CW
Fan Hub Working Height 5 9/16"
Other Special Features:
  • 16 blade CNC Machined Aluminum impeller
  • Anodized with military grade surface coating
  • Directional impeller cavity oriented to a clockwise rotation
  • Lower radiator hose inlet on passenger side
  • BACKING PLATE IS INCLUDED
  • See pump 1680 for the 1964-1967 289 Hi Po engine application
  • Alternative Part Numbers C5AZ8501E, C5AZ8501H, C5AZ8501L, C5AZ8501P, C5AZ8501T, C5OE8505B, C5OZ8501B, C5OZ8501C, C5OZ8501D, C5OZ8501E, C5OZ8501F, C5OZ8501G, C5OZ8501H, C6OE8505A, C6OE8505B, C8AE8505J, C8OE8505D, C9AZ8501A, C9AZ8501B, C9ZZ8501A, D3UZ8501A
Parts Contained in Box:
Mounting Gaskets, Installation Sheet, FlowKooler Decal
Make Model Year Block CID Liters
FORD FORD 300 1963 V8 289 4.7L
FORD FAIRLANE 1966 V8 289 4.7L
FORD GT40 1968 V8 289 4.7L
FORD FALCON SEDAN DELIVERY 65-64 V8 289 4.7L
FORD GALAXIE 500, RANCH WAGON 66-65 V8 289 4.7L
FORD GALAXIE 67-64 V8 289 4.7L
FORD COUNTRY SEDAN, COUNTRY SQUIRE, CUSTOM, CUSTOM 500, LTD, RANCHERO 67-65 V8 289 4.7L
FORD MUSTANG 68-64 V8 289 4.7L
FORD BRONCO 68-66 V8 289 4.7L
FORD FALCON 68-67 V8 289 4.7L
MERCURY COMMUTER 1967 V8 289 4.7L
MERCURY MONTEGO 1968 V8 289 4.7L
MERCURY CALIENTE 67-66 V8 289 4.7L
MERCURY CYCLONE, VILLAGER, VOYAGER, 67-66 V8 289 4.7L
MERCURY COMET 68-65 V8 289 4.7L
MERCURY COUGAR 68-67 V8 289 4.7L
FORD GALAXIE 500 1968 V8 302 5.0L
FORD E-300 ECONOLINE, F-100, F-250, F-350, RANCH WAGON 1969 V8 302 5.0L
FORD E-200, E300 ECONOLINE 1972 V8 302 5.0L
FORD E-200, E300 ECONOLINE 1974 V8 302 5.0L
FORD COUNTRY SEDAN, COUNTRY SQUIRE,CUSTOM,CUSTOM 500,FAIRLANE,LTD,MUSTANG,RANCHERO,TORINO 69-68 V8 302 5.0L
MERCURY COMET,COUGAR,CYCLONE,MONTEGO 69-68 V8 302 5.0L
FORD E-200 ECONOLINE 70-69 V8 302 5.0L
FORD E-100 ECONOLINE 74-69 V8 302 5.0L
FORD BRONCO 77-68 V8 302 5.0L
MERCURY COMET, COUGAR, CYCLONE, MONTEGO 69-68 V8 302 5.0L
FORD COUNTRY SEDAN 1969 V8 351 5.8L
FORD COUNTRY SQUIRE 1969 V8 351 5.8L
FORD CUSTOM, CUSTOM 500, FAIRLANE, GALAXIE 500, LTD, MUSTANG, RANCH WAGON, RANCHERO, TORINO 1969 V8 351 5.8L
MERCURY COMET, COUGAR, CYCLONE, MONTEGO 1969 V8 351 5.8L
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: 38633673462

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4.6 ★★★★★
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KC
West Palm Beach, US
★★★★★ 5
They worked
I got these for my elbows because I think I might have eczema on my elbow. They work very well. However I do wish they were a little looser. As far as putting them on your heels, the fit works well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 2, 2026
C
Verified Purchase
CatDeLuna
Draper, US
★★★★★ 5
Good Results
I have always struggled with dry, cracked heels, but I’ve finally found a solution that keeps them consistently hydrated: these special socks with a moisturizing silicone lining on the heels. My heels now feel incredibly soft, but it’s important to note that consistency is key. Wearing these socks every night before bed has made a significant difference. It’s not enough to just wear them once and expect results; you have to be diligent and make it a part of your nightly routine. After a few weeks of nightly use, my heels are much softer and no longer cracked. What I love about these socks is how easy they are to use. Just slip them on before going to sleep, and the silicone lining does its magic overnight. By morning, my heels feel smooth and well-moisturized. For anyone struggling with dry heels, I highly recommend these socks. Remember, the secret is consistency. Stick with it, and you’ll see the difference!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 28, 2024
D
Verified Purchase
Deb L
Phoenix, US
★★★★★ 5
So comfortable!
These work great and very comfortable. I put these on with heel moisturizer cream at bed time. Heels were improved overnight. They are washable too!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 31, 2026
M
Verified Purchase
me
Boise, US
★★★★★ 3
Just aren’t large enough.
This is a great idea, and I can wear socks over them and not notice they are there. I just wish they came in a larger size. When I put cream around the edges of my heels where the cracks always are, I cannot stretch the socks wide enough to clear the heel without smearing the cream onto my fingers or on the sock cuff. They do stay in place and aren't squishy at all when walking. They smell good too. The price is right. I wore them overnight and my heels were indeed much softer and smoother than before, and felt moist (tacky) where the cream had been. So they do an amazing job, but after using them six nights, they just aren’t large enough for me to put on without a hassle.
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Reviewed in the United States on April 28, 2024
M
Verified Purchase
MsNomer
Phoenix, US
★★★★★ 5
these really work
saved my poor cracking heels
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2026

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