Combination Valve Disc/Drum Brass Brake Proportioning Valve
Note: Electrical connection is different than original. Pigtail Sensor Wire is available. See below.
Works on nearly all GM cars and trucks that have disc brakes in the front and drum brakes in rear. Our 25509419 proportioning valve will work as left mount, right mount or bottom mount.
The 25509419 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 25509419 GM Disc-Drum Proportioning Valve allows proper fluid transfer and contains a residual pressure valve for proper braking. The 25509419 will work on nearly all trucks that have disc brakes in the front and drum brakes in the rear. This GM Disc/Drum proportioning valve works on half ton truck up to 1 ton trucks. The 25509419 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 below.