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#91015593
$146.99
/each
In Stock
Quantity
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Mechanical Water Pump Type, Steel Housing Material
| MFG. Part # | Select Side |
| Water Pump Type | Mechanical |
| Water Pump Style | Short Depth |
| Housing Material | Steel |
| Housing Finish | Painted |
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855.313.9176Quick and Easy Returns
Return PolicyOriginal Flathead water pumps have always suffered from unreliable bronze bushings and carbon seals. They almost always leaked and even Ford manuals warned mechanics not to tighten fan belts too tight. The excess slack allowed belts to slip and lose contact with the generator and water pump pulleys, causing more cooling and power problems.
Speedway's completely new water pumps feature severe-duty roller and ball bearings, close tolerances and modular impellers to provide maximum flow and reduce cavitation. They also have modern ceramic seals on a heavy duty 5/8" shaft, making the assembly exceptionally strong and more efficient. All mounting areas are spot faced for improved fit and sealing.
Factory replacement for 1937-1948 Ford and Mercury cars and trucks. Includes gaskets.
Water Pump Features (GIF)
For Wide Belt Applications, Gaskets Included
Charts
910-15593 Instructions (PDF)
Guides & Documents
CA WARNING:
Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov
| KEY SPECS | |
|---|---|
| MFG. Part # | Select Side to see |
| Brand | Speedway Motors |
| Water Pump Type | Mechanical |
| Water Pump Style | Short Depth |
| Housing Material | Steel |
| Housing Finish | Painted |
| GENERAL | |
| Pulley Type Compatibility | V-Belt |
| Pulley Diameter | 4.35" |
| Groove Count | 1 |
| Belt Width | 0.63" |
| Housing Color | Black |
| Mounted Length | 3.31" |
| Hose ID | 1.75" |
| Pilot Shaft Diameter | 0.63 Inch |
| Overall Height | 9.00" |
| Gasket(s) Included | Yes |
| Sold in Quantity | Each |
| Notes | Includes motor mount flange. 1.00" from engine side of pulley to mounting flange. |
4.7
20 Reviews
Customers commend the product for its quality and practicality, with many noting it as an improvement over original designs and models. It is praised for its flawless performance, heavier duty, accurate fit, advanced functionality, and no leakage. Despite some needing adjustments with bolts for fitting purposes, the product's usability and material quality stand unrivaled. It has received particular applause from classic car technicians for its redesigned features. Several customers showed their trust by expressing their willingness to repurchase the product. The product received isolated criticism regarding leaks after some thousand miles. Nevertheless, the overall customer feedback necessitates refining minor fitting details while maintaining the product's current superior qualities.
4.7
20 reviews
5
17
4
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Most Liked Positive Review
5.0
Excellent quality product with great enh
Product bolts on and performs flawlessly. Will not pass muster for originality in judging competitions but functionally is on the mark. Body of the pump will need painting to match original Ford/Mercury blue (or green), and as well the end of the shaft in the middle of the pulley wheel requires painting black to maintain the fundamentals of originality. Given the wheels are cast the black semi-gloss finish is correct for the pulley only. Given my motor is new I am running a bit warmer than previously as expected (during break-in) so cannot comment at this time on the increased flow performance of the pumps. Performance to-date since install has been excellent.
Most Liked Negative Review
1.0
1932 thru 1948 V8 water pumps
Your new pumps started leaking after a few thousand miles with in a couple of weeks from each other. I have used the original truck pumps with good service for many years before trying your pumps and will be going back to them. Norm
Filter by Ratings
I will buy again
5.0
2 years ago
no nickname
danville illinois
Verified
worked out great had to grind the casting a little because it hit the timing cover
Would Recommend
i may buy again
5.0
3 years ago
N/A
Detroit MI
Verified
great deal of improvements to make them last. BEWARE future buyers, the castings are thinner. you may need to shorten mounting bolts on the middle mount hole and the inlet hole at the bottom. check length first and make needed adjustments to mounting bolt length. if you don't check this, your bolts will bottom out before they compress the water pump to the block and you will be dealing with leaky pumps. no fun
Would Recommend
I would highly recommend this product
5.0
3 years ago
Ron
Santa Clarita
Verified
This product was a perfect fit and worked flawlessly.
Would Recommend
yes buy again
5.0
3 years ago
Claude
Bedford IN
Verified
Used on a new build
Would Recommend
The water pump was exactly right.
5.0
6 years ago
Herman
vernon texas
Verified
This was exactly what we were needing. Thanks.
Would Recommend
Pumps work and look good.
5.0
8 years ago
Motordr32
Beamsville Ontario Canada
Verified
I put these pumps on my 59A engine in my 32 Ford Coupe. Pulleys and belts all lined up perfectly. No leaks and using a 13# rad cap.
Would Recommend
great service
5.0
8 years ago
Mike
SAcramento Ca.
Verified
high quality part ,an improvement over originals
Would Recommend
I would always buy these pumps !
5.0
8 years ago
Xlr8er
Houston Tx
Verified
Speedway pumps are the best! Bill, knew what he was doing when he had these pumps designed. All bearing, better impeller. Can't say enough about them. Thank You for selling such a good product. Tom Teske ( classic car tech.)
Would Recommend
yes
5.0
9 years ago
N/A
Darlington, Pa
Verified
good quauity
Would Recommend
great
5.0
9 years ago
dick head
il.
Verified
great
Would Recommend
Showing 10 of 20 reviews
7 Questions • 8 Answers
What radiator cap can I use with the pumps? Can I run a 16 pound cap
by Thomas
• 7 years ago
1 answer
View Answer
Would the 910-15593 pumps bolt up to a 1950 block, and could I change to an earlier crank pulley to line up the belt?
by Duecepkup
• 7 years ago
2 answers
View Answers
BY using the wide belt option I am assuming this is for use with an aftermarket 10SI or 12Sl alternator. But will that work with the stock Ford Flathead crank pulley?
by Tony
• 9 years ago
1 answer
View Answer
do these water pumps have ports for a heater hose? having trouble finding the correct lower heater hose adapter
by Mark
• 10 years ago
1 answer
View Answer
Do these pumps have a .75" or a .63 shaft? The listing says both details.
by FlatheadRonbo
• 11 years ago
1 answer
View Answer
What pressure cap will these water pumps operate ?
by Olds
• 12 years ago
1 answer
View Answer
Are the 49-53 and 37-48 interchageable?
by Larry
• 15 years ago
1 answer
View Answer
7 of 7 questions shown
