Dual Bowl Master Cylinder For Manual Disc/Disc or Disc/Drum Brakes 1965-1973

Master Power: MC11378M
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Dual Bowl Master Cylinder For Manual Disc/Disc or Disc/Drum Brakes 1965-1973
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Product Description

Dual bowl brake master cylinder for 1965-1973 Mustangs with non-power disc/disc or disc/drum brakes.

The single master cylinder that the 1965-1966 Mustang is originally equipped with provides fluid pressure to all four wheels at the same time. All four wheels are linked together in a hydraulic fluid circuit. If a problem develops in any of the four brakes, lines, hoses or single master cylinder, that creates a fluid pressure loss. This will cause you to lose both front and rear brakes.

With a dual master cylinder, the brakes are split front and rear. If a problem develops in the front, only the front brakes would be lost. You would still have the rear brakes to bring you to a stop. The same would happen if you had a problem with the rear brakes, you would still have the front brakes to bring you to a stop.

This master cylinder has a 1" bore and will fit disc/drum and disc/disc applications. The front outlet is 3/8"-24 and the rear outlet is 1/2"-20.

Dual bowl conversion lines are required for installation on a 1965-1966 Mustang.

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Installation Instructions

Mustang Installation

Mustang Applications

This product will fit the following Ford Mustang years:

Product Reviews

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Dual Bowl Master Cylinder For Manual Disc/Disc or Disc/Drum Brakes 1965-1973 is rated 3.3333333333333335 out of 5 by 3.
Rated 4 out of 5 by from Easy Install, Needs parts to complete Wasn't exactly a one fore one swap. First of all but no big deal, a stock brake pushrod is loose in the piston unlike the original master which you have to pop the pushrod out. No big deal because the brake pedal holds it in. More important is if you are using your stock lines to the distribution block you will need adapters readily available at summit or jegs. The front fitting needs to be stepped up one size and the back needed to be stepped up twice. You are looking for male to female inverted flare adapters. Or you could make new lines but I did not have the material or tools at the time.
Date published: 2015-05-11
Rated 3 out of 5 by from Good fit, but felt deceived. Fits as advertised. It wound be nice if it came with adapter fittings. It was not listed that this is a MP brand master cylinder. Felt deceived becouse I was also looking at the lower priced MP product to purchase.
Date published: 2015-07-29
Rated 3 out of 5 by from MC is fine, however lines are an issue I installed this MC and it fit just fine. A few things to note: The colored caps in the picture were not included with my MC. The brake lines MU14190O do not fit this MC. The rear bowl line to the dist block is too small, need an adapter. The front bowl nut (mine was black) is too small. It screws in, but does keep pressure. Good Luck! DL
Date published: 2015-08-17
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Product Questions

My brake light switch appears to be on my master cylinder (single bowl 64 mustang) if I convert to the double bowl is there a place for the switch?

Asked by: Brandy123
We offer this adapter so the original hydraulic switch can be used. http://www.cjponyparts.com/brake-switch-adapter-1964/p/HW2466/
Answered by: rk cjpp
Date published: 2016-05-20

Front brake hole ? Which goes to the front?

Asked by: Poopsie
the smaller fluid chamber that is toward the front of the car goes to the rear brakes and the larger fluid chamber that is closer to the firewall goes to the front brakes.
Answered by: mike999
Date published: 2016-05-06

will this work for a 71 ford torino gt with front disc and rear drum?

Asked by: jcraft32
If your original master cylinder has a 1 inch bore this will work.
Answered by: rk cjpp
Date published: 2016-03-28

Does this require a proportioning valve for front disc -rear drum?

Asked by: DC 65
Yes it will,  this will work fine with the stock disc/ drum prop valve.  If you are running 4 wheel discs you can replace the stock one with an adjustable unit like BPV1.
Answered by: tom cjpp
Date published: 2016-03-24

My 64 1/2 stang has the original master brake cylinder and on the very front is a brake light connection. How does this work on the double bowel cylinder?

Asked by: old guy76
You will need HW2466 to keep the stock brake switch.
Answered by: tom cjpp
Date published: 2016-03-24

does this come with a push rod? if not do i have to re use the old one?

Asked by: stonewallstang
It does not come with a push rod, you have to reuse your existing push rod.
Answered by: rk cjpp
Date published: 2016-03-17

Will I need any adaptors for the brake lines if I have a 1968 mustang currently with drum and drum manual. I'm converting it to disc and drum manual?  I ask because a lot of reviews mention you do but they don't say for what car and application. 

Asked by: Dave1981
Because of different fitting sizes used during manufacturing some users may need different size brake line fittings or adapters.
Answered by: rk cjpp
Date published: 2016-03-10

Brake master cylinder drum to drum 1961 ford what is the part number?

Asked by: Poopsie
We offer a dual bowl master cylinder conversion for 65-66 mustangs part #DBC1. We do not have any listings that for a 61 ford.
Answered by: rk cjpp
Date published: 2016-01-18
  • 2016-07-25T07:53CST
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