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 8 - Aug 13

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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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Beachlover27
Omaha, US
★★★★★ 5
Seems to be indestructible
Color: Blue
Quality toy that seems to be indestructible to my aggressive chewer. The down side is that it's not his favorite toy because he seems to know he can't destroy it.
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Reviewed in the United States on August 24, 2025
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Dennis Collins
Whiting, US
★★★★★ 2
Didn’t last long but she loves it
Color: Pink
Our miniature dachshund dog 2 1/2 years old had the lid chewed off before the Amazon Driver got out of the driveway
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Reviewed in the United States on February 18, 2026
B
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Barbara McGaha
Waukegan, US
★★★★★ 5
Durability
Color: Pink
My dog absolutely loves playing with this toy!! It is made of very thick plastic and I’m thinking she won’t be able to destroy this toy very easily!! She loves for you to throw it and play tug of war with. I’m very pleased with my purchase. She is a medium size dog and it works great for her.
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Reviewed in the United States on October 30, 2025
D
Verified Purchase
demagnitized
Boise, US
★★★★★ 1
Not durable
Color: Pink, Color: Pink
My dog tore this toy up within hours. She’s not an aggressive chewer but took the top right off!
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Reviewed in the United States on April 29, 2026
P
Verified Purchase
P SD
Natrona Heights, US
★★★★★ 5
Well made, minor issue was quickly resolved
Size: Large, Color: Dinos Bruto (Purple)
I purchased the Dino Bruto Dog toy for my labradoodle who is quite fond of squeaky, squawky stuffed toys and oddly enough has shown a preference for purple. I opened the package with my hound standing by waiting for his gift. I detached the tags and attempted to squeak the toy. It seemed difficult to squeak or honk. I tossed the purple Dino Bruto to my dog who excitedly chomped to squeak. The toy squawked a couple times and then just quit. My poor hound was staring up at me with that "what's up with this" look on his face. I tracked down the website for the GoDog toys, not going through the Amazon return process. I called the good people at GoDog and stated simply that my dog's favorite part of the toy failed quite quickly and I was wondering about guarantees. I was told to go to the website and file a replacement request. The replacement request required that I include a photo which I did as directed. I received an reply email within a couple hours which stated that a new toy would be sent out shortly. I am happy to report that we received a replacement toy, not the purple Dino, but a colorful wood duck. The squawker device works well and is still performing like new more than a month later. It appears that the squeaker is not those little plastic squeakers but the bigger heavy plastic bag, bladder, with what I visualize as a duck call sort of sound device. I am guessing because I haven't seen the inside of the GoDog toys. I have seen the guts of other stuffed toys which use this type of noise device. While our dog seems to enjoy the sound of the plastic bag, bladder set-up squawkers, they seem to fail quickly and I tend to avoid them because of this. The toys using this type of squawker that I have seen, use what looks like a cheap lightweight plastic bag which is not securely attached to the "voice box". Since the GoDog replacement toy is holding up so well, I am guessing GoDog uses a heavier grade plastic bladder coupled with reinforced construction. The purple Dino Bruto toy still looks new even after multiple times of our hound grabbing the purple toy, shaking it at us with his invite to give chase or play keep away. Since the squawker failed so quickly with the new toy, I figure it was just a defective item which does not reflect the general quality of toys from GoDog. One evening our neighbor was visiting while his pitbull was playing in our yard with our dog. Our patio door was open so our dog ran into the house and grabbed his purple Dino Bruto toy. He is a bit of a show-off with new toys. Our dog then went racing back into the yard, shaking his GoDog toy at the pitbull. A quick game of tug-of-war ensued. Since this is a new toy, our neighbor leaped into the game and took the toy away from the dogs. In that short time of tugging between the dogs, the toy held together and did not even pull apart at any of the seams. There were no puncture marks either. This is a game our dog has initiated before with the neighbor pitbull. Normally, the stuffed toys are ripped apart almost immediately. I was surprised and impressed with the quality of the sewing which appears to employ some sort of reinforced construction or heavier material. I plan to make more purchases from GoDog toys. The toys are a little more expensive than some stuffed dogs toys but they hold up so well I figure they are worth a few more dollars. They are great toys that hold up well and the company provides quick responses to inquiries. I consider this a winning combination.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 15, 2013

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