Product Summary

Mechanical Water Pump Type, 1 Groove Count

  • All new water pumps to replace your leaking, worn out or stuck water pumps on 1949-53 Ford Flathead
  • Designed for use with 5/8" belt drive system
  • Severe-duty roller and ball bearings for durability
  • These are 48-52 truck-style pumps, often used when installing "late" flatheads into '32-'48 Fords.
  • Stainless 1949-53 Flathead Ford Water Pump Bolt Kit

Comes as a Kit

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Key Specs

MFG. Part #9100427
BrandSpeedway Motors
Water Pump TypeMechanical
Water Pump StyleShort Depth
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Need To Know

Quick and Easy Returns

Return Policy

Speedway Motors 9100427 Details

Original 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.

  • Driver and passenger pump
  • Designed for use with 5/8" belt drive system
  • Severe-duty roller and ball bearings
  • Ceramic seals on sturdy 3/4" shaft
  • High-flow modular impeller reduces cavitation
  • Includes gasket and a connection for the heater hose return
  • Premium stainless steel bolt
  • AN Washers

Application

  • Used when swapping 1949-1953 engine into 1932-1948 Ford and Mercury cars and trucks
  • Also used on stock 1949-1953 Ford pickup applications

Charts

Warranty Information

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Attempts to pull or press pulley will void warranty.

Speedway Motors 9100427 Specifications

KEY SPECS
MFG. Part #9100427
BrandSpeedway Motors
Water Pump TypeMechanical
Water Pump StyleShort Depth
GENERAL
Pulley Type CompatibilityV-Belt
Pulley Diameter4.38"
Groove Count1
Belt Width0.63"
Mounted Length4.75"
Heater Outlet Size3/8" NPT
Overall Length5.36"
Overall Height9.00"
Gasket(s) IncludedYes
Hardware IncludedYes
Sold in QuantityKit

Ratings & Reviews

4.8

10 Reviews

Overall Assessment

Customers highly rate the water pumps for their first-class quality and original appearance, praising them for the seamless installation process and perfect fit. Many highlight their effectiveness in solving overheating issues, even praising them as an improvement upon traditional models. Users have confirmed the pumps' compatibility with a variety of vehicles, from 1935 Ford pickups to '49 Flathead V8s, and express willingness to re-purchase due to satisfaction with performance and quality. The water pumps are also recognized for their precision in aligning the belts just right, enhancing their practicality.

4.8

10 reviews

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Would buy

5.0

a year ago

Davey

Pa

Verified

Nice quality

Would Recommend

Look of good quality

4.0

2 years ago

Carson Customs

Oxford Ks

Verified

Look to be well made. Hope they keep the flat cool.

Would Recommend

First rate waterpumps

5.0

3 years ago

Wayne

Ewing, NJ

Verified

These are first class pieces. Went right on and fit right

Would Recommend

Original appearance

5.0

3 years ago

Rattle Cat

Morganton, NC

Verified

Originality in appearance is important to me. These water pumps look original but with modern internal components. Should solve traditional overheating issues.

Would Recommend

I buy these water pumps again

4.0

3 years ago

Cab over wayne

Keremeos B.C. Canada

Verified

Installed in 1935 Ford pickup

Would Recommend

Solved the problem works well.

5.0

4 years ago

Al

Sault Ste Marie Canada

Verified

Flushed system and filled with pure vinegar (NOT THE RAD) for couple of days pressure washed water jackets new pumps runs like a charm. No over heating problems.

Would Recommend

Great fit for my '49 Flathead V8

5.0

4 years ago

Pop pop

Burgin, KY

Verified

Replacing the OEM parts on my '49 Flatty.

I would buy again.

5.0

4 years ago

Butch

Pacific junction Ia

Verified

Good quality.

If I need another one I would order it again

5.0

4 years ago

Butch

Williamsburg Va.

Verified

Fit like it was made for it

Would Recommend

Bolted up just right, couldn't be happier with my purchase!

5.0

4 years ago

Flathead Ford

Oklahoma

Verified

Belts line up just right

Would Recommend

Showing 10 of 10 reviews

Questions & Answers

Fitment

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

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Customer Impersonation Script