Product Summary

Frame Position, Drum Brake System Type, Natural

  • Triangular bolt pattern directly fits '39-'48 Fords
  • NEW-not rebuilt
  • 1/2"-20 outlet
See more details

Key Specs

MFG. Part #91031401
BrandSpeedway Motors
Master Cylinder Bore Size1-1/16 Inch
Master Cylinder MaterialCast Iron
FinishNatural
See more specs

Need To Know

Quick and Easy Returns

Return Policy

Speedway Motors 91031401 Details

Single outlet master cylinder with triangular bolt pattern for 1939-1948 Ford and Mercury cars. Has a 1/2"-20 outlet fitting (washer sealed).

Learn more about selecting the proper master cylinder for your vehicle by reading our tech article.Brake System Selection.

Charts

Speedway Motors 91031401 Specifications

KEY SPECS
MFG. Part #91031401
BrandSpeedway Motors
Master Cylinder Bore Size1-1/16 Inch
Master Cylinder MaterialCast Iron
FinishNatural
GENERAL
PositionFrame
Brake System TypeDrum
Outlet CountSingle
Reservoir TypeIntegral
Reservoir IncludedYes
Outlet Fitting1/2"-20 Banjo
Overall Width3.09"
Overall Height3.03"
Mounted Length5.38"
Centerline of Holes2.3"
Sleeve MaterialSteel
Sold in QuantityEach
NotesAlso fits '48-'52 F-1 trucks.FORD 91A-2140

Ratings & Reviews

4.2

13 Reviews

Overall Assessment

Customers appreciate our product for its perfect fit, usability, and high-quality material. The master cylinder item is confirmed to work well in diverse vehicles, from contemporary models to 1929 Ford Model A and custom 1941 vintage autos. It's commonly found to be an exact match for original parts, and, significantly, serves as an effective replacement for both brake and clutch master cylinders. Users also praise the simple installation and nice aesthetics of the part. Despite some glitches, the dominant consensus is robust satisfaction in its performance and reliability as compared to similar products in the market.

4.2

13 reviews

5

7

4

4

3

0

2

1

1

1

Most Liked Positive Review

5.0

Exactly what I wanted.

This master cylinder is exactly the same style as the one I took out, so it fitted straight in and was easy to set up.

Most Liked Negative Review

1.0

Not happy with part

Ordered master cyl received outlet port not threaded called customer service they said no more in stock on backorder unknown delivery date. Not happy!!

Filter by Ratings

Probably not

2.0

a month ago

Ol 48 ford

Cordell ok

Don't pay the extra to get it faster sure doesn't get here when they say

Would Not Recommend

Master cylinder

4.0

a year ago

Kt

Bend oregon

Verified

As described looks good I'm sure it will work well

Would Recommend

yes

5.0

a year ago

rick

heber springs ar

Verified

fit perfect for the application

Would Recommend

Exactly what I wanted.

5.0

2 years ago

Griz

London, England

Verified

This master cylinder is exactly the same style as the one I took out, so it fitted straight in and was easy to set up.

Would Recommend

This product fit perfect.

5.0

2 years ago

SJ

Weyauwega WI

Verified

They had the exact same master cylinder we need for our project.

Would Recommend

Not happy with part

1.0

5 years ago

R Runner

Oak Lawn Ill

Verified

Ordered master cyl received outlet port not threaded called customer service they said no more in stock on backorder unknown delivery date. Not happy!!

Would Not Recommend

Great

5.0

5 years ago

Mike

Illinois

Verified

Good fit, works well

I will buy this again

5.0

6 years ago

Jack

Ball Ground,Ga

Verified

Fit in place perfectly just like the original

Would Recommend

I will do business with this company again

5.0

6 years ago

Gunner

Alabama

Verified

Needed it for my 1929 ford model A

Would Recommend

Great replacement master cylinders.

4.0

7 years ago

Jlevas

Portland, OR

Verified

Used for both brake and clutch master cylinders on custom 1941 vintage vehicle.

Would Recommend

Load More Reviews

Showing 10 of 13 reviews

Questions & Answers

2 Questions • 2 Answers

Is the rubber and seals used in these master cylinders compatible with dot 5(silicone) brake fluid?

by Troy

• 8 years ago

1 answer

Will this fit a 1965 Dodge D-100 pickup? Any suggestions?

by Marty

• 14 years ago

1 answer

2 of 2 questions shown

Fitment

          Customer Impersonation Script