Please note some products may not be available or may take longer than normal to arrive due to supplier backlog. All KeyParts GROUND shipped products are shipping 2 to 5 business days after placing your order, all Truck Freighted (large and heavy) items are shipping 3 to 10 business days after placing your order.
American Autowire Classic Update products are shipping 5 weeks after placing your order. Brake Parts typically ship the same day or next day.
Truck and Jeep Parts and Accessories at Unbeatable Prices!
1978-87 Chevy/GMC Full Size Truck Front Disc/ Rear Drums Proportioning Valve
For 1978,1979,1980,1981, 1982, 1983, 1984, 1985, 1986, and 1987 Full-Size Chevy and GMC Trucks
Our Price:
$78.88
Code:
78-87-gm-fs-truck-prop-valve
Manufacturer:
CCT Inc.
Rating:
Part #:
78-87-GM-FS-Truck-Prop-Valve
Application:
Chevy/GMC Full Size Truck
- 100% secure
- Price match guarantee
- Easy returns process
- Convenient payment options
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
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 1978Chevy 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 yearCustomer Reviews
Average
based on 41 reviews
Write an online review and share your thoughts with others.
Brake proportioning valve
Review by Joshua from , on 8/8/2021
I have an 88 R30 pickup, was a direct fit replacement for my prop valve. Works flawlessly. Solve a problem I've had for 2 years. (Rear tired locking up) I highly recommend this product
Awesome fit
Review by Raymond from , on 10/27/2020
Everything was as described. No modifications necessary. Built very well. Heavy duty
84 c10
Review by Josh from , on 9/5/2020
Works perfectly and fit perfectly.
PERFECT
Review by Ken Messier from , on 7/24/2020
Fast shipping, packaged well and fit prefect.. Highly recommend !
proportioning valve
Review by Pete from , on 3/17/2020
It works as intended
proportioning valve
Review by Douglas LaRue from , on 2/12/2020
This worked out great. Thanks so much
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.
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!
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 !!
Proportioning valve for Chevy truck
Review by William Dean from , on 12/16/2018
Perfect fit and works great. No problems at all.
