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#91031420
$95.99
/each
In Stock
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Universal Fit, Firewall Position, Tandem Outlet Count
| MFG. Part # | 91031420 |
| Brand | Speedway Motors |
| Master Cylinder Bore Size | 1 Inch |
| Master Cylinder Material | Cast Iron |
| Finish | Natural |
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855.313.9176Quick and Easy Returns
Return PolicyDual feed master cylinder with 2 bolt flange style mount. Use with Speedway brake pedal assemblies. This cylinder is similar to those used on mid-70's Fords (Mustang, Fairlane/LTD, etc. with disc front/drum rear).
Uses 3/8"-24 female inverted flare outlets. If plumbing with AN 3 lines, you will need two each of these AN to IFM Adapters.
Learn more about selecting the proper master cylinder for your vehicle by reading our tech article. Brake System Selection.Â
Guides & Documents
CA WARNING:
Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov
| KEY SPECS | |
|---|---|
| MFG. Part # | 91031420 |
| Brand | Speedway Motors |
| Master Cylinder Bore Size | 1 Inch |
| Master Cylinder Material | Cast Iron |
| Finish | Natural |
| GENERAL | |
| Position | Firewall |
| Outlet Count | Tandem |
| Reservoir Type | Integral |
| Reservoir Included | Yes |
| Pushrods Included | Yes |
| Outlet Fitting | 3/8"-24 IFF |
| Overall Width | 4" |
| Overall Height | 5" |
| Mounted Length | 7" |
| Centerline of Holes | 3.25" |
| Sold in Quantity | Each |
| Notes | Includes 3/8"-24 threaded push rod. |
4.6
82 Reviews
Customers rate our master cylinder highly, praising its quality and easy installation. It appears to fit a wide range of older vehicles, allowing users to replace hard-to-find parts. It often offers better fit, function, and no need for adapters compared to other cylinders. Users recommend it for its superior performance and potential to upgrade outdated braking systems. Comments suggest this Speedway master cylinder has the ability to significantly increase braking power. Some users experienced issues with the product but were satisfied with the replacements provided. The majority of users would purchase the cylinder again and recommend it as an excellent choice for antique car renovations.
4.6
82 reviews
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Most Liked Positive Review
4.0
After Market Master Cylinder
I bought this master cylinder to replace a standard GM single master cylinder on a 64 Pontiac Tempest. I bought it knowing the mounting holes on the new part were about 1/4" closer than the original so I just had to reem out the holes a bit and she bolted right up. It looks good and is under $40.00. 2 thumbs up, Dil
Most Liked Negative Review
2.0
Works OK
I have used several of these, the first one as an exact replacement for a defective one on a T-Bucket I had purchased. I have since rebuilt my entire brake system and installed another new one. After bench bleeding and installing it appeared to be OK but then completely failed after a few test pumps. I discovered that the pushrod hadn't seated in the cylinder but hung up and then snapped into place. It then worked OK after re-adjusting the pushrod. This could have been very serious on the road because you have no braking at all if the cylinder doesn't go far enough in. If you use this cylinder, make certain the pushrod is all the way in and snap ring is engaged – test it by pulling out.
Filter by Ratings
If needed I would buy again
5.0
a year ago
SS53
North Dakota
Verified
It's on my 23 T bucket
Would Recommend
I would buy this product again
5.0
2 years ago
Mike
Mesquite texas
Verified
This was an exact replacement for my 23 t bucket,it was a great product and I would absolutely buy it again!!! And I couldn't believe how low the price was
Would Recommend
Perfect fit
5.0
2 years ago
Dale Dayle
Benson, NC
Verified
Bolts up perfectly for our 23 Tbucket Kit
Would Recommend
Perfect fit, perfect operation
5.0
2 years ago
Q234
Kansas City, MO
Verified
New master cylinder in my 1937 Chevy
Would Recommend
Iwould buy this again
5.0
2 years ago
Lonnie
Sequim ,WA
Verified
just right fit
Would Recommend
Speedway saves me again!
5.0
3 years ago
FACE
Tampa Bay
Verified
I have an old 1923 T-Bucket that was originally built by someone else. When I need parts, it's very difficult to figure out what vehicle the parts originally came off of. When I needed this master cylinder, Speedway had all the specs listed (measurements) which allowed me to easily match it up. After 6 trips to different auto parts stores with the old master cylinder in hand, they all said the same thing which everyone is familiar with - What make and year did it come from? Should have come to Speedway first and saved a bunch of gas money. Thanks!
Would Recommend
Yes, I would buy this product again. Thank you.
5.0
3 years ago
Info Maker
Bismarck, ND
Verified
Could have used two plastic port plugs following the bench bleed.
Would Recommend
Cant go wrong with ordering parts from Speedway.
5.0
3 years ago
Beno
Pittsburg Ks
Verified
It was installed on a 1939 Ford ratrod truck. Works as it should.
Would Recommend
Best brakes I eve had on my steeetrod
5.0
4 years ago
Lyle
Va
Verified
I had to modify brake lines but knew that when I ordered it. Have no ideas what I put on my 29 Tudor back in 1989. This one worked perfectly!
Would Recommend
Stopping power
5.0
4 years ago
Grumpy
Alma ks
Verified
Excellent fit and plenty of stopping power
Would Recommend
Showing 10 of 82 reviews
26 Questions • 11 Answers
910-31425/31420 MASTER CYL. NEW OR REBUILT?
by CHIP
• 6 years ago
1 answer
View Answer
I reference to master cylinder with the 1" bore. Do you have one exactly like it but with a 7/8" bore?
by Paul
• 8 years ago
1 answer
View Answer
Sorry, same question about this Master Cylinder. Trying to figure out which one will work better for us: Part# 91031420 or Part# 91031445. We have a 1967 Ford Galaxie 500 390 Fastback. Currently has Drum Brakes Front and Drum Brakes Rear, with Manual Brakes. We are swapping in front spindles with Disc Brakes from a 1978 Ford Thunderbird, so we will have Drums on Rear and Disc on Front, and staying with Manual Brakes. We will be installing a Proportioning Valve inline to the Rear Drums. So my question is, will this Universal Master Cylinder Part #91031420 work better in our application than the Part #91031445? And are there any other suggested parts that may be required? Thanks Again!
by Bob
• 8 years ago
1 answer
View Answer
I purchased a 1993 yj wrangler complete brake booster/master cylinder, and fire wall mounting bracket with pedals. I am installing it into a 1955 CJ5 jeep. The m/c brake line ports are on the Right/Passenger side, I need it to be on the Left/driver side. The dimensions of the m/c are correct and it will work to mount onto the booster and the ports are on the Left/Drivers side. Disc front/Drum rear. All I would have to do is make a push rod to length between the m/c and brake booster to make it work. Correct?
by Raiders#1
• 8 years ago
2 answers
View Answers
will this work with disc front and rear
by repete
• 9 years ago
1 answer
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I have a street rod, manual brakes, with camaro discs up front and drums on the rear. Will the #91031420 work with my set up?
by Dan
• 9 years ago
1 answer
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Hey is there an aluminium version of this you can give me the part number for please? thankyou
by Ben
• 9 years ago
1 answer
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WHAT WOULD YOU RECOMMEND FOR REPLACING A STOCK 1951 4 DOOR MERC MASTER CYLINDER WITH? AS WELL AS BRAKE LINES? EVERYTHING MECHANICAL ON THE CAR IS STOCK. AND WOULD I NEED ANYTHING ELSE TO MAKE THE RECOMMENDED MASTER CYLINDER WORK?
by SHAWN
• 9 years ago
1 answer
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Will this work for stock car class in circle track disk front and rear
by alf
• 10 years ago
1 answer
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Does Speedway supply a rebuild kit for this Master cylinder?
by Tom
• 10 years ago
1 answer
View Answer
10 of 26 questions shown
