SKU: disc-drum-proportion-valve Brass Disc/Drum Proportion Valve - 5 ports

GM Universal Combination Valve Disc/Drum Brass; Exact Copy of Original Brake Proportioning Valve

Works on nearly all GM cars and trucks that have disc brakes in the front and drum brakes in rear.


Our disc-drum-Proportion-Valve proportioning valve will work as left mount, right mount or bottom mount. ThePV2 combination/prop valve has five connections.
It 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.

The This Proportioning Valve allows proper fluid transfer and contains a residual pressure valve for proper braking.
This brake valve will work on nearly all trucks that have disc brakes in the front and drum brakes in the rear. This prop valve works on  half ton truck up to 1 ton trucks.
This proportion brake valve is a dual front brake line valve.  If you are looking for the single line front brake valve order our 14041636 valve.
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.

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Glad this proportioning valve was available

Review by Martin from Rockville, Md on 1/10/2016

Used this valve as an alternative for the Kelsey Hayes combination valve in my 73 Cuda. A replacement for the original valve was impossible to find, so I had to come up with something else that worked. The inlet/outlet ports were roughly in the same locations as my old valve which made plumbing easier. Had to fab a mounting bracket and use a different brake switch connection, but other then that everything worked.