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America's Oldest Speed Shop ® 800.979.0122 Lincoln, NE
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U.S.Order Line:

800.979.0122

(CST) 7am - 10pm

Race and Rod Tech Support

Mon-Fri 8am - 5pm

Canadian Order Line:

855.313.9180

International Order Line:

1.402.323.3200
Since 1952
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Dual Feed Master Cylinder

SAME DAY SHIPPING! Order within the next 3 hours 39 minutes and receive same day shipping

Specs
Material Type:
Steel
Sold in Quantity:
Each
Finish:
Painted
Feed:
Dual
Outlet Fitting:
3/8"-24 IFF
Garage Sale:
No
Centerline of Holes:
3.25
Overall Height:
5.00
Overall Width:
4.00
Mounted Length:
7.00
Bore Size:
1.00
Notes
Includes 3/8"-24 threaded push rod.
Dual Feed Master Cylinder
Dual Feed Master Cylinder
Dual Feed Master Cylinder
Dual Feed Master Cylinder
Dual Feed Master Cylinder

Click image to enlarge

Details

Reviews

Q & A

What's in the Box

Dual 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).

  • Mounting Bolt Holes:  3/8" or 10mm 
  • 7 1/4" long without the pushrod, add 2" for the pushrod
  • 3" wide from the outside of the reservoir to the edge of the outlets
  • Mounting flange is 4" wide
  • Master cylinder is also 3-7/16" tall without a cap
  • Included push rod is threaded 3/8"-24 (fine thread).
  • If you need a yoke for the pedal hook-up, use this Forged Steel Yoke.
  • Push rod boot included.

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. 

Notes

  1. Tech Tip: The bigger the master cylinder is, the more fluid you get, but you'll have less pressure at the caliper.
  2. There is no longer a loop on the end of the push rod for this master cylinder. It is now threaded 3/8"-24 (fine) male. If you need a yoke for pedal hook-up, use 910-02973.

Customer Reviews

Rated 4.4 out of 5 by 22 reviewers.
RATING BREAKDOWN
22 reviews
5 Stars
15
4 Stars
4
3 Stars
1
2 Stars
1
1 Star
1
RECOMMEND THIS PRODUCT:

madjack0606
Verified Purchaser
virginia

First one was junk

August 03, 2015
Bought the same unit over a year ago. Project delays caused me to not install it right away. The first unit would not work right out of the box. Replaced it with the exact model and the second one appears to work fine.
No, I would not recommend this product.
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Ron
Verified Purchaser
CT.

good product as I exspected

July 14, 2015
Good service
Yes, I recommend this product.
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Don
Verified Purchaser
Verified Reviewer
Guthrie, Okla.

Master Cylinder

July 11, 2015
Great product just would not work for my application and had to order bigger one.
Yes, I recommend this product.
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BE Customes
Verified Purchaser
Pottsboro, TX

The master cylinder fits perfectly and does exactly what it'

July 10, 2015
I used it on my 27 t roadster and it works perfect.
Yes, I recommend this product.
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Ken
Verified Purchaser
Coatesville Pa

Excellent product from an excellent company

June 09, 2015
took it out of the box, bolted it on bled the breaks and out on the road. I couldn't ask for better
Pros:
  • Excellent Prices
  • Quality parts
  • Prompt Shipping
  • Never Been Disappoint
Cons:
  • there are none
Yes, I recommend this product.
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mud racer for life
Verified Purchaser
dalhart rx

good product

May 13, 2015
It worked good for my up right headers but the fitting were wrong and had to rig my lines to fit
Yes, I recommend this product.
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Ratman440
Verified Purchaser
Edinburg, ND 58227, USA

GREAT!!

February 03, 2015
i got this with the pedal and bracekt combo for an awsesome price il b looking forward to see how it works!! good quality!
Yes, I recommend this product.
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Bucksss12
Verified Purchaser
Livermore, ca.

well made design that's been around for

August 24, 2014
I mounted this on the frame rail of a 49 Studebaker pick-up. Had to modify the original mount a bit. Works great.
Yes, I recommend this product.
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olddude
Verified Purchaser
conneaut,

it worked for me.

July 28, 2014
it was the same master cylinder that I had, however, I did have to make a new brake line that went to my line lock. The fitting on this cylinder was smaller.
Yes, I recommend this product.
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Gary2258
Kenosha, WI, USA

Works great easy to bleed

September 05, 2013
Bleed easy, its much safer and less hassle than trying to rebuild an old piece of junk
Pros:
  • faster than rebuilding and not much more money.
Cons:
  • didn't order it before trying to rebuild an old on
Yes, I recommend this product.
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Page 1 of 3

Product Q&A

15 questions : 15 answers

1 answers

THE SPACE IS TIGHT ON THE RIGHT SIDE OF THE MASTER, DOES THTHIS COME WITH THE LINES ON THE LEFT SIS COME WITH THE LINES ON TE LEFT SIDE(driver side)AS AN OPTION? my application is a 1946 Ford Woodie with stock pedal assembly. Is there a workable MC with the lines on the left? I have disc front and stock drum rear

woodiejim
Montana
January 17, 2015

THE SPACE IS TIGHT ON THE RIGHT SIDE OF THE MASTER, DOES THTHIS COME WITH THE LINES ON THE LEFT SIS COME WITH THE LINES ON TE LEFT SIDE(driver side)AS AN OPTION? my application is a 1946 Ford Woodie with stock pedal assembly. Is there a workable MC with the lines on the left? I have disc front and stock drum rear

Answers

January 19, 2015
EricM
This master cylinder only has the fluid outlets on one side. We do offer master cylinder 91031445 which has outlets on both sides. You simply plug off the unused ports.
1 answers

check valve Does this MS have a check valve internally? Someone told me if I have it mounted under the floor it may need one. I have drums on all 4 wheels with adjustable proportion valve. thanks I bought this MC from you guys and installed it 2 months ago. Now the pedal went to the floor with no leaks anywhere.. I believe the previous MC was the same model. The rod went all the way thru and got stuck. I couldn't remove it from MC

Scooterville
Maryland, USA
September 29, 2014

check valve Does this MS have a check valve internally? Someone told me if I have it mounted under the floor it may need one. I have drums on all 4 wheels with adjustable proportion valve. thanks I bought this MC from you guys and installed it 2 months ago. Now the pedal went to the floor with no leaks anywhere.. I believe the previous MC was the same model. The rod went all the way thru and got stuck. I couldn't remove it from MC

Answers

September 29, 2014
EricM
No this does not have a built in check valve (commonly called a residual pressure valve). For your drum brakes you will need two 10 psi residual valves such as 91031347, 91031348, or 8352601876.
1 answers

what is the travel on the rod? right now the pedal is hitting the floor and seems like theres not enough brake

lorin
August 26, 2014

what is the travel on the rod? right now the pedal is hitting the floor and seems like theres not enough brake

Answers

August 26, 2014
EricM
With full pedal travel and still insufficient brakes it appears you still have air in the system. You may want to check the master again and bench bleed for air in the cylinder. Once done you can recall the push rod travel and relay to the pedal to see if the rod is adjusted for full stroke. Elevate the rear of the car and bleed the rears and then the same with the front while tapping on the lines with plastic handled screw driver. When correct it should take less than half of the pedal travel.
1 answers

push rod install how does the push rod install into the master cylinder

Abbegale
Ontario, Canada
August 17, 2014

push rod install how does the push rod install into the master cylinder

Answers

August 19, 2014
EricM
The pushrod has a ball and snap ring installed on the end. Once pushed into the master cylinder it will engage the piston and the snap ring will collapse, then expand into the snap ring groove locking it in place.
1 answers

I'm planning a conversion to front discs on my 1949 Chevy pickup. Will this unit work for me?

Johnny49
CT
July 22, 2014

I'm planning a conversion to front discs on my 1949 Chevy pickup. Will this unit work for me?

Answers

July 23, 2014
EricM
The snap ring that retains the piston in the cylinder bore is definitely required. The spring plate or star pattern retainer is not required but helps keep the push rod in place. Take the boot off if so equipped and then re install after the push rod is in place. The push rod retainer itself will stay in place if the linkage is adjusted correctly so as not to allow the rod to fall out under severe braking requirements.
1 answers

If i have disk in front and drum in the rear what reservoir will i have to the disk

tompa
Sweden
February 09, 2014

If i have disk in front and drum in the rear what reservoir will i have to the disk

Answers

February 10, 2014
EricM
The larger reservoir is always used for the front brakes. On this master cylinder use the port closest to the mount flange for the front brakes and the port furthest from the mount flange for the rear brakes.
1 answers

what brake fluid is recommended for this master cylinder? i just dont wanna put the wrong fluid in?

phone01
Arizona, USA
October 11, 2013

what brake fluid is recommended for this master cylinder? i just dont wanna put the wrong fluid in?

Answers

October 14, 2013
Jason
Speedway recommends the use of DOT 3 or 4 brake fluid with this dual feed master cylinder.
1 answers

Will this fit a 1947 Ford and be an exact replacement for the stock Master Cylinder? I am in the process of installing disc brakes on my fat-fendered 47 Ford. I want to replace the single feed master cylinder with a double feed. Is this the one I need? Will it fit without any modification and let me use my existing brake pedal? Thank you.

dennis7
Lincoln, CA
January 04, 2013

Will this fit a 1947 Ford and be an exact replacement for the stock Master Cylinder? I am in the process of installing disc brakes on my fat-fendered 47 Ford. I want to replace the single feed master cylinder with a double feed. Is this the one I need? Will it fit without any modification and let me use my existing brake pedal? Thank you.

Answers

January 04, 2013
Jason
This master cylinder will NOT be a direct replacement for your 1947 Ford master cylinder. If you currently have the original master cylinder it will have a 3 bolt mounting flange to mount it to the car and this master cylinder from the 70’s is a horizontal 2 bolt mounting. You will need to acquire a 3 to 2 bolt adapter plate available from Sacramento Vintage Ford in order to mount the newer style master cylinder. Bore size is 1” as compared to the original 1 1/16” but this will help with pedal pressure requirement for the disc brake conversion.
1 answers

can I use this with a four wheel drum set up?

Toms
January 02, 2013

can I use this with a four wheel drum set up?

Answers

January 03, 2013
Jason
This master cylinder is 1” bore and will work well with 4 wheel drum brakes. The larger reservoir is plumbed to the front brakes to properly stage the line pressure.
1 answers

Is this a good replacement on my bucket t, mine is leaking and has a soft pedal action??

Mur
Louisville, KY
March 31, 2012

Is this a good replacement on my bucket t, mine is leaking and has a soft pedal action??

Answers

April 02, 2012
John
This master cylinder is commonly used on T buckets including the kits we offer at Speedway Motors. Outlets may vary from what you currently have and require an adapter fitting. Remember the large reservoir always goes to the front brakes and that the piston needs to return all the way to the snap ring in order to get proper functioning brakes. Always bench bleed the master cylinder before installation.
Page 1 of 2

You may also be interested in:

Master Cylinder/Pedal Assembly for Model T, A, 1932 Ford
(Part #91631926)
                        

Designed for a clean and simple install onto Model T, Model A, and 1932 Ford frame. The included 1" bore remanufactured master cylinder is suitable for 4-wheel disc or disc/drum brake setups. The outlet ports are 3/8"-24 IFF. The bracket can be bolted or welded to the left frame rail (boxed or stock).

Kit includes a dual feed master cylinder, frame bracket, and a steel pedal arm w/ pad that can be easily modified for driver comfort.

Note: Will NOT work in conjunction with the factory clutch pedal. Intended for use with an Automatic Transmission.

916-31926 Instructions (PDF) 

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

Item Details

Fits Model T, Model A, and 1932 frames.
AN to IFM Adapter
(Part #910318)
                        

Fittings are zinc plated. Select from:

  • 3/8"-24 IFM - AN 3 Male - Steel 
  • 7/16"-24 IFM - AN 3 Male - Steel
  • 1/2"-20 IFM - AN 3 Male - Steel
  • 9/16"-18 IFM - AN 3 Male - Steel
Inverted Flare Thread Nuts for 3/16 Inch Tubing, 3/8-24
(Part #91031820)
                        

Steel 3/8"-24 IFM thread nuts for 3/16" brake line when double flared to 45°.

Dual Feed Master Cylinder w/ Stainless Sleeve
(Part #91031425)
                        

Brake fluid can ruin your master cylinder in just a few years. Stop the problem by using a stainless steel sleeved master cylinder. Our new sleeved dual feed master cylinder will work with most disc/drum combinations.

  • No more pitting in the bore
  • 1" bore
  • Popular 3/8"-24 inverted flare ports
  • 3/16" brake line will screw right in

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

Chrome Master Cylinder Cover
(Part #5505274)
                        

One piece, single bail, chrome plated cover and bail. Fits master cylinder # 910-31420. Gasket is included.

Dual Outlet Master Cylinder Steel Dual Brake Line Kit
(Part #91031801)
                        

This is a pair of steel or stainless steel brake lines intended to simplify plumbing from the master cylinder to a proportioning block, such as our 910-31358 or 835-26011179.

  • Features tight 90° bends at the master cylinder end
  • Both ends of both lines are 3/8"-24 inverted flare nuts
  • The longer of the two lines measures app. 12" from the bend to the end
Replacement Pushrod for Manual Master Cylinder
(Part #91631946)
                        

This replacement pushrod for manual master cylinders fits our Dual Feed Master Cylinder 910-31420.

  • Overall Length:  6"
  • Threaded Length:  5-3/8"
  • Threads:  3/8" Fine

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

Item Details

3/8" Fine thread, 5-3/8" thread length