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#91015592
$117.99
/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 3/4" shaft, making the assembly exceptionally strong and more efficient.
Note: This water pump is for 1949-1953 engines in 1948-1952 pickups or 1932-1948 cars.
For Wide Belt Application, Gaskets Included
Application
Charts
Specs
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 | 4.38" |
| Groove Count | 1 |
| Belt Width | 0.63" |
| Housing Color | Black |
| Mounted Length | 4.75" |
| Heater Outlet Size | 3/8" NPT |
| Overall Length | 5.38" |
| Overall Height | 9.00" |
| Gasket(s) Included | Yes |
| Hardware Included | No |
| Sold in Quantity | Each |
| Notes | 2-3/4" from back edge of pulley to mounting surface. |
4.8
59 Reviews
Customers highly praise our product for its superior quality, performance, and compatibility with a range of models including Mercury engines and Flathead Fords. Claimed to be an essential upgrade over original versions, many found it a cost-effective solution to cooling issues. Users testified the product prevented leakage and improved water circulation, attributing to greater engine efficiency. The product provides an easy, accurate fit and has garnered trust for its durable build. Dissatisfaction was expressed due to inconsistencies in product design across orders. However, many customers remain confident in the product's value stating they would repurchase.
4.8
59 reviews
5
51
4
5
3
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1
1
0
Most Liked Positive Review
4.0
water pump upgrade
Great water pump Upgrade for my 1940 59a. Keeps my flatty cool
Most Liked Negative Review
2.0
I not sure if I buy this product again
I purchased one roughly 1-1/2 years ago from SM. We ran the engine with water/anti freeze and then the project got put on the back burner due to health issues. The engine sat empty of water/anti freeze. We were prepared to start the engine and this pump was difficult to turn and made a terrible grinding noise. We did not trust the pump so we purchased another one. We purchased the exact same P/N and it came in different than the original. The suction connection was machine with a bead on it to prevent the hose from coming off. VERY NICE! However it is roughly 3/4" shorter than the original. Now the bottom water hose is too short and since we use silicon hose its not cheep to buy more. Important note. Ford Flatheads have two water pumps. We ordered two and ran both of them just as mentioned above. The other pump turns like new and make absolute no noise.
Filter by Ratings
Good choice
5.0
28 days ago
Mac
Carol Stream, IL
Verified
Installation was straightforward and everything worked perfectly.
Would Recommend
Yes
5.0
5 months ago
Dirty
Palm Coast fl
Verified
Cool better
Would Recommend
I will buy again
5.0
6 months ago
flatheat
ohio
Verified
Ford Flathead
Would Recommend
I will buy again
5.0
3 years ago
hotrod
ohio
Verified
Flathead
Would Recommend
Fantastic product, easy fit and great quality
5.0
4 years ago
Spike
Melbourne australia
Verified
I needed a pair of 8rt wide belt pumps to finish off a customers early style Mercury engine. The Mercury engine was converted to late model 8ba style distributor, running a Mercury 4" crankshaft and wide belt front pulley. Hence then need for the 8RT pumps to align the pulleys.
Would Recommend
nice product
4.0
5 years ago
jj
colorado
Verified
putting on 1953 flathead
Would Recommend
Excellent water pumps that don't leak and fast shipping
5.0
5 years ago
Marti
Austin
Verified
Thoroughly satisfied with the water pumps. No leaks and brand new castings for my 80 year old car.
Would Recommend
QUESTIONABLE QUALITY
3.0
5 years ago
Bentley
Suffield, CT
I bought a pair of these pumps in March 2019 for building an engine using an 8BA block. Time elapsed as build was completed, a '37 Ford Tudor purchased and engine installed. Finally the engine break-in started this year. The DS pump started leaking coolant that became progressively worse. No more than 10 hours of run time. I just bought and received a new pump as a replacement. There appears to be subtle differences in the new pump at the leakage location. In spite of the history and difference I am installing the new pump. I may regret this decision since the probably of another failure is 50/50. There does not appear to be any practical alternative option under Warranty.
Would Not Recommend
Need to cool a flathead?
4.0
5 years ago
RB35
EC, MD
Verified
My flathead is being rebuilt so I haven't installed the pumps yet. Based on other review and comments, thses should work just fine.
Would Recommend
I would buy this part again if I needed another one.
4.0
5 years ago
Bill
Apopka Fla
Verified
I was going to hook them up on my swimming pool but couldn't figure out how to make them work, so I installed them on my Mercury Flathead engine. Haven't started the engine yet so I don't really know if they pump water.
Would Recommend
Showing 10 of 59 reviews
18 Questions • 12 Answers
I'd like to run a walker radiator. But they require water pumps that are able to run a 16 pound radiator cap. Can your water pumps handle a 16 pound cap.
by Thomas
• 7 years ago
1 answer
View Answer
Do you sell the heater hose adapter/fitting that screws into the water pump? Do you sell the metal upper radiator hoses, chrome or powder coated? American made?
by David
• 8 years ago
1 answer
View Answer
Can this be used to swap an 8ba flathead into a 37 ford with a V8-60 flathead
by Gideon
• 8 years ago
1 answer
View Answer
Can I replace a pulley on one side with a duel version? installing a power steering pump. Thanks
by reborn49
• 8 years ago
2 answers
View Answers
Need to replace both water pumps on 50 ford car flathead v8, previously purchased an altinater bracket from speedway. Can I get pumps to run a one belt system, with electric fan. Thanks
by Hillbilly Mike
• 9 years ago
2 answers
View Answers
Can you tell me if this will fit a 1946 block? Can you give me a measurement from the back of the pump, where it meets the block, to the center of the pulley? Thank you
by Joe
• 9 years ago
1 answer
View Answer
Will this fit a 51 Ford car ? Just want to make sure it will bolt up to the original flathead in a 51 Ford car. Is there a different belt, since you mention " Wide belt " ? Thanks,
by Tim02
• 12 years ago
1 answer
View Answer
Can you get the bearings out and put in another housing, also speedway? My water pump is smoothed, painted and uses a serpentine belt. It is the Street Rodder Road Tour 2007car.
by Pecdaddy
• 12 years ago
1 answer
View Answer
These are the right ones to use with a french block?
by dunnomuch
• 12 years ago
1 answer
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i have a 51 merc with a small width pulleys--do you sell them too
by NCGERALD
• 12 years ago
1 answer
View Answer
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