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.
172-1359 Delco GM 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.
If your valve has five brake lines that tie into the valve in the locations shown below, chances are our valve will bolt into place.
Our 172-1359 proportioning valve will work as left mount, right mount or bottom mount. The 172-1359 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 2 year warranty.
The 172-1359 Proportioning Valve allows proper fluid transfer and contains a residual pressure valve for proper braking.
The 172-1359 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.
The 172-1359 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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