• Some orders may take longer to arrive due to shipper and supplier delays. Learn More.
Account Login
Gift Cards
Track Order
Help Center

JEGS Power Brake Booster Conversion Kit 1 1/8 in. Bore [Disc/Disc]


Product Q&A
View Now
Click image to zoom
Power Brake Booster Conversion Kit 1 1/8 in. Bore [Disc/Disc]
SAVE $31.00
More than 10 available
Power Brake Booster Conversion Kit
  • Disc/Disc
  • 1 1/8 in. Bore Diameter Aluminum Dual Reservoir Master Cylinder
  • Oval Flat Top Master Cylinder Cover
  • 8 in. Dual Diaphragm Power Booster
  • Chrome Plated
  • Free Shipping - Ships
    631014 is rated 4.4 out of 5 by 15.
    Rated 5 out of 5 by from Neat features When I purchased this a month ago, my delivery was canceled because it was damaged during transport. I informed Jegs immediately and a replacement was shipped right away without question. Installation was not as easy as expected. I had to order new brake lines to replace the originals, to have proper connection to the master cylinder, in my 69 resto-mod Chevelle, and made modifications to have the correct line placement for the 4 disc brake conversion. I also had to install an electric vacuum pump to have the right amount of pressure to the brakes, from 10# to maximum 20#s because the original booster was 11” and this is an 8”. I love the clean chrome appearance and it’s working as it should. So far, no leaks...keeping my fingers crossed.
    Date published: 2020-03-29
    Rated 5 out of 5 by from Great Product I bought this to enhance the engine area & also afford me with good brakes. This product does both!!
    Date published: 2019-11-15
    Rated 5 out of 5 by from good value works as a master cylinder and brake booster should
    Date published: 2018-01-29
    Rated 4 out of 5 by from Well made unit I put this unit in a 1952 Chevy p/u that I added disc brakes to the rear, (already had front). Be very versed in brake systems or install with a mechanic. Instructions did not even acknowledge there was a proportioning valve. The proportioning valve had a odd size larger screw in input for the front disc brakes which not being in the instructions was difficult to determine it’s size. Went to four locations from a brake line shop to a machine/hydraulic shop and two auto parts stores before finding a fitting that would fit it. Brake line shop would make a custom part for me but..... then found an odd ball fitting and my mechanic buddy was able to make tubing with the part and his tubing flaring tools. Master cylinder top may have had a burr as one of the screw holes leaked after being tightened down, after so TLC it seems to have stopped. The unit is very sharp looking, not the typical master cylinder. Very nice unit just not a simple upgrade type unit, you have to work for it.
    Date published: 2022-01-11
    Rated 4 out of 5 by from Good overall quality, almost as pictured Good overall quality, excellent for the price, I wish it included a plug for one of the front 2 lines in the valve block but I will be running separate lines. It did include plugs for the fittings on the other side of the master cylinder as one review mentioned not having them so that was a concern. The only thing I expected was for the vacuum check valve to be chrome as in the picture, but mine was black plastic so I will have to order one separately. The hardware for the brackets also is not the greatest looking so I plan on upgrading it to better chrome or polished stainless instead. Either way it looks to be a quality piece and for the price I can't complain too much.
    Date published: 2021-08-09
    Rated 4 out of 5 by from nice chrome I have not finished the installation, I did however purchase a flat mounting bracket rather than use the angle bracket that is supplied. Wish you had this choice when placing order
    Date published: 2019-03-24
    Rated 1 out of 5 by from Pain in the Works ok, the inputs for the master and the proportioning valve are 9/16” which are hard to find. Does not include the needed plugs for the other side of the master, good luck finding them.
    Date published: 2018-07-24
    • y_2022, m_5, d_21, h_21
    • bvseo_bulk, prod_bvrr, vn_bulk_3.0.27
    • cp_1, bvpage1
    • co_hasreviews, tv_8, tr_7
    • loc_en_US, sid_10001_10001_3725449, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_jegs

    I'd Like to install this on a 64 Chevy pickup with disc brakes up front and drums in the rear, should I expect issues with the divided application? What amount of reduction in foot to pedal pressure/effort can I expect?

    Asked by: TripSeven
    You will want to look at this link for a better option - https://www.jegs.com/i/JEGS/555/631019/10002/-1
    Answered by: Rusty B
    Date published: 2018-09-20

    What is the length of this item...I only have 11” max 

    Asked by: Todd789
    This will be 12"-13" in length from the flange.
    Answered by: Rusty B
    Date published: 2018-07-18

    Will this work in my 1979 Corvette 350?

    Asked by: jsp2242
    This is a universal kit, you will need to measure to make sure you have clearance to install.
    Answered by: Rusty B
    Date published: 2020-10-12

    Will this work on a 1964 Chevy pickup that has drum brakes or will I have to change over to disc brakes ? 

    Asked by: Reo 2
    This is made for a rear disc brake setup.
    Answered by: Rusty B
    Date published: 2018-06-29

    Do you have one to fit a 78 olds g body they are angled upwards in stock application

    Asked by: Kendall 62
    We do not offer a direct fit kit for your Oldsmobile. You can determine the best universal fit kit for your application.
    Answered by: Rusty B
    Date published: 2018-06-07

    Will this fit 1977 Chevy C10 truck 

    Asked by: Rileyboy
    This is a universal kit and will work in most Gm applications, you need to visually check top make sure you have the room to mount it.
    Answered by: Rusty B
    Date published: 2020-01-02

    Will this  booster and master cylinder work on my 78 elcamino? And please explain any fabrication! Because I am mechanical challenged?

    Asked by: Lobo1
    Yeah that will work and you shouldn't have to do any fabrication.
    Answered by: Seth W
    Date published: 2018-04-12

    Will this fit a 96 sonoma ?

    Asked by: Kirby Cortez
    This is not made for a vehicle with an ABS system.
    Answered by: Rusty B
    Date published: 2018-03-07
    • y_2022, m_5, d_21, h_21CST
    • bvseo_bulk, prod_bvqa, vn_bulk_3.0.27
    • cp_1, bvpage1
    • co_hasquestionsanswers, tq_12
    • loc_en_US, sid_10001_10001_3725449, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_jegs

    Items You Need

    Recently Viewed

    Some parts are not legal for use in California or other states with similar laws / regulations

    Motor Vehicles

    WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.


    WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.

    Electrical Cords

    WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.