SKU: 95387318389

32-48Pair 1932-1948 Ford 1939-1948 Mercury Flathead water pumps

Sale price$100.52 Regular price$111.69
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Ships within 48 hours · Estimated delivery Aug 3 - Aug 8

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Description

32-48Pair 1932-1948 Ford 1939-1948 Mercury Flathead water pumpsThere are a number of waterpumps on the Flathead motors. Please read the applications listed below before ordering. For year people have battled overheating on the Ford and Mercury Flathead engines. One of the reasons is the coolant flow rate. When an engine overheats and people experiment they can sometimes point to the wrong cause for the effect. It is a fallacy that low flow causes overheating. The reality is higher flow rates in a pressurized

There are a number of waterpumps on the Flathead motors. Please read the applications listed below before ordering.

For year people have battled overheating on the Ford and Mercury Flathead engines.  One of the reasons is the coolant flow rate.  When an engine overheats and people experiment they can sometimes point to the wrong cause for the effect.  It is a fallacy that low flow causes overheating.  The reality is higher flow rates in a pressurized system will help shed the heat.

This is not a replica of the OEM cast iron impeller with thick vanes, a shallow eye and irregular density inherent in pouring sand castings.  Our impeller is precision machined from 6061 billets of aluminum.  It has more vanes, and opened up eye and thinner vane walls to draw more fluid flow into and out of this pump and through your block and into the radiator. 

Getting hot coolant into the radiator more frequently will provide more opportunities to shed the heat.  At higher rpms you'll build block pressure to reduce the likelihood of steam vapor forming on the jacket wall.  This impeller design 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 inline 6 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.

Install Tip: We had feedback that the pumps higher flow rate was causing fluid loss out of non pressure systems.  The OE radiators used baffles to prevent premature coolant but the fiberboard seal inside an OE cap may be weaken beyond the ~3.5psi they hold.  If you lose fluid at the neck please consider a rebuild kit with the correct height to prevent this.

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

General Specifications:
Type of Material of Pump Body Cast Iron
Number of Blades on Impeller 12
Direction of Rotation CW
Other Special Features:
  • CNC Machined billet aluminum impeller
  • Impeller protected with anodized military grade surface coating
  • 5/8" single groove pulley
  • Flatheads require two pumps; this is the price for both left AND right
  • Corresponding OEM Parts GH5592DRV / GH5592PASS 
Parts Contained in Box:
Mounting Gaskets, Installation Sheet, FlowKooler Decal

 

MAKE MODEL YEAR
FORD CARS MODEL 18 1932
FORD CARS MODEL 40 1933
FORD CARS MODEL 40 A 1934
FORD CARS MODEL 48 1935
FORD CARS MODEL 50 1935
FORD CARS MODEL 74 1937
FORD CARS MODEL 78 1937
FORD CARS MODEL 81 A 1938
FORD CARS MODEL 82 A 1938
FORD CARS MODEL 85 1938
FORD CARS SEDAN DELIVERY 1937-1947
FORD CARS STANDARD 1939-1940
FORD CARS DELUXE 1939-1948
FORD CARS MODEL 11 A 1941
FORD CARS SUPER DELUXE 1941-1948
FORD CARS MODEL 21A 1942
     
FORD TRUCK 67 (1/2 TON) 1936
FORD TRUCK 68 (1/2 TON) 1936
FORD TRUCK 1/2 TON PICKUP 1937-1947
FORD TRUCK 3/4 TON PICKUP 1937-1947
FORD TRUCK 1 TON PICKUP 1937-1947
FORD TRUCK 1-1/2 TON PICKUP 1940
FORD TRUCK F1, F2, F3, F4 1948
     
MERCURY SERIES 99A 1939
MERCURY SERIES O9A 1940
MERCURY SERIES 19A 1941
MERCURY SERIES 29A 1942
MERCURY M SERIES TRUCK 1948
MERCURY MERCURY 1946-1948
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: 95387318389

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J
Verified Purchase
jrager
Pawtucket, US
★★★★★ 5
Sturdy and well built
Color: Natural Wood
Very sturdy and well built.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
S
Verified Purchase
Smoke
Whiting, US
★★★★★ 5
Great value and easy to install!
Color: Black, Color: Black
I only needed 3 of the 4 shelves so I have one as a backup! Very easy to install as well. The shelves feel sturdy and I’ve never had any issues!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 15, 2026
K
Verified Purchase
Kinny
Battle Creek, US
★★★★★ 4
quality matches cost + instructions unnecessarily tedious
Color: Brown, Color: Brown
The material is real wood but don't assume that means quality - it's still very cheap feeling, and very lightweight. But once installed they are quite stable, and they look great from afar. I got a darker colored one and the stain does come off very easily. One of the shelves had a huge manufacturer sticker on it and it took off the stain when I removed it, and a bit of the stain also came off when I wiped the shelves down with a wet cloth. It'll be dry dusting from now on, I suppose. Also, they did not fit snugly into the corner - when one side is pushed flush to the wall, it forces the other side to pull away from the wall a little bit. It wasn't a drastic space, maybe like 1/8th of an inch, but it is still something to note. I am fine with the cheap quality as they are, after all, pretty cheap, so I'd say they are worth exactly as much as they cost. Personally I am happy with the purchase - just thought I'd warn. Secondly - if you want to follow the instructions exactly, you will need two people unless you have inhuman agility. But I also think the instructions were a bit asinine and tedious. They want you to line up the LOOSE shelf and brackets with a leveler to mark where the brackets go on the wall, then put in the wall screws, hang the brackets on them, balance the shelf on the brackets to mark on the SHELF where the brackets will be attached, take the brackets off the wall to screw them into the shelf, then put the combined shelf-bracket unit once again on the wall screws and finally screw those in tight. In hindsight, you can just mark where the brackets should go on the SHELF (not wall), screw the brackets into the shelves, THEN level the shelf on the wall and screw the whole unit into the wall together. We were really baffled why the instructions didn't have us do that instead of spending extra time (and frustration) trying to juggle all the loose pieces and tools. But I'm not engineer-minded, nor have I ever installed corner shelves before, so maybe there would be some kind of issue with doing it that way that I can't predict.
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Reviewed in the United States on June 10, 2024
A
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Antonia
Lowell, US
★★★★★ 5
Good shelving decor
Color: Black
Easy to install and perfect for a corner display of Disney decor. They are lightweight, so we didn't put anything heavy on them, but the brackets seem sturdy enough that we could probably put something moderately weighty on them.
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Reviewed in the United States on November 25, 2025
M
Verified Purchase
Monica
Los Angeles, US
★★★★★ 5
GREAT BUY
Color: Natural Wood
LOVE these shelves! Got them for each side of the bed to put books. Really elevates the room, and is cuter than just a simple straight book shelf.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 9, 2026

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