Account Login
Gift Cards
Track Order
Help Center

JEGS Brake Master Cylinder, Aluminum with Chrome Finish [GM Universal Mounting]


Product Q&A
View Now
Click image to zoom
Brake Master Cylinder, Aluminum with Chrome Finish [GM Universal Mounting]
SAVE $17.60
6 left in stock
Brake Master Cylinder
  • GM Universal Mounting
  • Non-Power Assisted Disc/Drum Applications
  • Power Assisted Drum/Drum, Disc/Drum & Disc/Disc Applications
  • 1 1/8 in. Bore
  • 9/16 in.-18 & 1/2 in.-20 Port on Ea. Side
  • Aluminum
  • Chrome Finish
  • QTY

    Items You May Also Consider

    631006 is rated 4.6 out of 5 by 7.
    Rated 5 out of 5 by from Great way to stop Looks fantastic and works even better. I am very pleased with my purchase
    Date published: 2023-09-07
    Rated 5 out of 5 by from JEGS Master Cylinder This is a great looking master cylinder and is lighter than the stock cast iron units. I also like that it has the option to run the brake lines on the opposite side. I bought this unit after having not much success with rebuilt cast iron units that kept leaking. Also this one was on the lower cost side of other aluminum ones I researched. The two Allen screws to retain the top give it a nice clean look and are an improvement over the bail type retainers. I had a little trouble with getting the front brake line to stop leaking but I am using silicone brake fluid which may add to the difficulty. I used some high temp thread sealer on the outside threads to resolve.
    Date published: 2015-02-14
    Rated 4 out of 5 by from Looks nice after.... What is it with the brake line fittings AND the given plugs not wanting to seal? Felt like the amount of required torque is too high.never got the original 1/2 20 front fitting adapter to seal,had to replace line with new 1/2 20 fitting for 3/16 line. Sealed right up,first time. A lot of grief but it looks nice now that it is done.
    Date published: 2017-03-04
    Rated 4 out of 5 by from Booster I would like to have better finishing on the cap the chrome is a little wavy. The booster has line ports on both sides which makes it universal but the plugs are not finished which takes away from the appearance.
    Date published: 2015-11-10
    Rated 4 out of 5 by from Looks nice, works well Looks great in the car and I like that you have to take the top off to add brake fluid, keeps it rom scraping the chrome like the old flip style ones. Easy to install, great for different applications
    Date published: 2015-06-18
    • y_2023, m_9, d_22, h_3
    • bvseo_bulk, prod_bvrr, vn_bulk_3.0.35
    • cp_1, bvpage1
    • co_hasreviews, tv_2, tr_5
    • loc_en_US, sid_10001_10001_889833, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_jegs

    Is there a gasket for the cover? Mine seems to leak

    Asked by: Mikey52
    Yes, there is a rubber diaphragm gasket in the top of the cover.
    Answered by: Rusty B
    Date published: 2022-11-07
    • y_2023, m_9, d_21, h_3CST
    • bvseo_bulk, prod_bvqa, vn_bulk_3.0.35
    • cp_1, bvpage1
    • co_hasquestionsanswers, tq_1
    • loc_en_US, sid_10001_10001_889833, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_jegs

    Items You Need

    Related Products

    JEGS Universal Cast Iron Master Cylinder Kit Features:Disc/Drum Proportioning ValveProportioning Valve Outlet Ports: (2) 3/8 in.-24 & (1) 9/16 in.-18Proportioning Valve Inlet Ports: (1) 1/2 in.-20 & (1) 7/16 in.-24Warning Light Switch Plug Included3 3/8 in. Center-to-Center Slotted Mounting HolesFits ...
    Whether your building a race car or street machine the JEGS 631222 universal high-volume brake master cylinder will give you plenty of additional stopping power. Its light weight and universal design allows for easy mounting on any vehicle.Features:Universal Style and ...
    JEGS 555-631234 O.E. Style Replacement Ford Mustang Brake Master CylinderThis Master Cylinder is designed for disc front and drum rear brakes and includes a removable shallow bore adapter that allows you to use this on power or manual brake systems.JEGS ...

    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.