1978-87 Chevy/GMC Full Size Truck Front Disc/ Rear Drums Proportioning Valve

Our Price $78.88

For 1978,1979,1980,1981, 1982, 1983, 1984, 1985, 1986, and 1987 Full-Size Chevy and GMC Trucks

    Our Price:
    CCT Inc.
    Part #:
    Chevy/GMC Full Size Truck

    Product Description

    1978-87 Chevy Truck Front Disc/Rear Drums Proportioning Valve
    Works on all 1978-87 Chevy and GMC full size trucks that have front disc brakes and drum rear brakes.
    Works on half ton through one ton, 2 and 4 wheel drive
    This Chevy truck brake proportioning valve comes with a 1 year warranty.
     For use on Disc/Drum Setup Only

    Disc/Drum Proportion Valve

    Our brake proportioning valve has a 9/16"-18 connection for Rear Brakes & Dual 3/8"-24 ports for the front brakes.
    The connections from the Master Cylinder are 1/2"-20 and 7/16"-24.
    This valve comes with a 1 year warranty.
    We also offer a pigtail for the prop valve wire sensor and a prop valve bleeding tool in the related items section of this page.

    If you drive a Chevrolet or GMC full-size truck from model years 1981 - 1987, then this is the correct brake proportioning valve for your front disc and rear drum brakes. This part works on full-size Chevy and GM trucks from half ton through one ton, whether it's a 2-wheel drive or a 4-wheel drive. If you've got GMC or Chevy brake proportioning valve problems, this part will help fix the following vehicles:

    • 1981 Full-Size Chevrolet Truck
    • 1982 Full Size Chevrolet Truck
    • 1983 Full-Size Chevrolet Truck
    • 1984 Full Size Chevrolet Truck
    • 1985 Full-Size Chevrolet Truck
    • 1986 Full Size Chevrolet Truck
    • 1987 Full-Size Chevrolet Truck
    • 1981 Full-Size GMC Truck
    • 1982 Full Size GMC Truck
    • 1983 Full-Size GMC Truck
    • 1984 Full Size GMC Truck
    • 1985 Full-Size GMC Truck
    • 1986 Full Size GMC Truck
    • 1987 Full-Size GMC Truck

    Vehicle Applications

    This part is designed to fit the following vehicles.

    Chevy Truck 1978
    Chevy Truck 1979
    Chevy Truck 1980
    Chevy Truck 1981
    Chevy Truck 1982
    Chevy Truck 1983
    Chevy Truck 1984
    Chevy Truck 1985
    Chevy Truck 1986
    Chevy Truck 1987
    GMC Truck 1978
    GMC Truck 1979
    GMC Truck 1980
    GMC Truck 1981
    GMC Truck 1982
    GMC Truck 1983
    GMC Truck 1984
    GMC Truck 1985
    GMC Truck 1986
    GMC Truck 1987

    Warranty Information

    1 year

    Customer Reviews

    Average 5 out of 55 out of 55 out of 55 out of 55 out of 5 based on 36 reviews

    Write an online review and share your thoughts with others.

    5 out of 55 out of 55 out of 55 out of 55 out of 5 proportioning valve
    Review by Douglas LaRue from , on 2/12/2020
    This worked out great. Thanks so much
    5 out of 55 out of 55 out of 55 out of 55 out of 5 Chevy Van G-20 1986
    Review by Wayne Carlile from , on 10/24/2019
    This valve fit perfect with no need to bend the existing steel break lines or modify the support bracket. The threads were clean and cross threading wasn't an issue. The Bleeder tool did its job and prevented the valve from switching the emergency light on.
    5 out of 55 out of 55 out of 55 out of 55 out of 5 Well-machined part
    Review by Angelo from , on 6/8/2019
    Fit perfectly on my 86 g10. Exact fitting and thread dimensions and same mount dimensions. This was hard to find elsewhere thank you for supplying this proportioning valve!
    5 out of 55 out of 55 out of 55 out of 55 out of 5 Perfect Fit
    Review by George Peele from , on 2/16/2019
    Was concerned about the fit on a 40 year old truck at first. Not anymore.Everything fitted and worked perfect. Good job fellas !!
    5 out of 55 out of 55 out of 55 out of 55 out of 5 Proportioning valve for Chevy truck
    Review by William Dean from , on 12/16/2018
    Perfect fit and works great. No problems at all.
    5 out of 55 out of 55 out of 55 out of 55 out of 5 Brakes
    Review by Robert Gordon from , on 11/26/2018
    The proportional valve that I received for the brakes on my 1981 Chevy pick up save the day now I can’t stop while I am pulling a boat.
    5 out of 55 out of 55 out of 55 out of 55 out of 5 Dave's Review
    Review by David Mood from , on 11/20/2018
    This valve was just like the original. Perfect
    5 out of 55 out of 55 out of 55 out of 55 out of 5 Great match
    Review by scott herrling from , on 7/20/2018
    For a 32 year old truck, this part was a identical match, and that was very nice.
    5 out of 55 out of 55 out of 55 out of 55 out of 5 rare part, export to Germany
    Review by Andreas from , on 3/14/2018
    I am glad I found carolina classic trucks - the break part for my 1984 CUCV Blazer canīt be found in Germany. Unfortunately, you donīt ship to Germany - but I have friends in the USA who received your shipment and sent it off to me.. thanks!
    5 out of 55 out of 55 out of 55 out of 55 out of 5 Chevy Brake Proportioning Valve
    Review by Liz from , on 2/19/2018
    I got this for my 88 chevy V20 silverado suburban. Fit perfectly, and the brakes are amazing. The original one was not working, then it started leaking. So happy with this purchase.

    View all 36 reviews