The 6 Best 4 wheel Disc Brake Proportioning valves (2023 reviews)

The valve is a must have add-on for your regular usage. It is great for setting up a disc-drum brake system on a project car or truck. This unit has a pressure switch built in but it is to activate the rear brake lights any time there is any brake pressure at all, not to indicate a problem. If you are running them on the front brakes, the brake light solenoid will be triggered so long as the line locks are holding pressure. It comes with a differential switch to warn of brake pressure failure so keep that in mind when using.

This valve will fit any dual circuit braking system. It is lightweight and compact. It is great with no early lockup. It is the standard in prop/distro valves.

Why We Like This:

Works great and makes for a clean setup
Delivers what they promise

Best For Rear Disc Brake conversion: UTSAUTO 4 wheel Disc Brake Proportioning Valve

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The utsauto 4 wheel disc brake proportioning valve should be able to handle its purpose and duties with ease. This Pv4 proportioning valve is a great fit for your classic truck. It bolts right up to the frame and brake lines with a 79 Blazer system and works perfectly. It will work on nearly all vehicles that have disc brakes in the front and disc brakes in the rear. The brake system is so much more responsive.

This proportioning valve ( also known as a combination valve) helps proportion the amount of pressure sent to the front and rear brakes, helping prevent rear lock. It is great for rear disc brake conversion.

Why We Like This:

New and hot release
Good brand reputation

Best For Disc Brake: Ateam Performance 4 wheel Disc Brake Proportioning Valve

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The ateam performance 4 wheel disc brake proportioning valve is capable of outshining several other valve featured in this list in overall features for the price point. This is a great addition to your restoration or replacement to your crappy stock proportioning valve. It is made from premium quality brass material. This is a safety built into the valve so you don't lose your brakes.

Why We Like This:

Fit and finish is outstanding, bolts right up to factory mount
Universal pv4 combination-proportioning valve, disc brake
Good investment for long term

Best For Ford: Qnbes 4 wheel Disc Brake Proportioning Valve

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The qnbes 4 wheel disc brake proportioning valve's material feels more premium than its price would suggest. It can be used on cars, trucks, or anything with 4 wheel disc brakes. It is great fit for hotrods, ford, chevy, or mopar classic truck. It is made of solid brass for durable and longer service life. It contains a residual pressure valve to provide a proper braking feel and ensure proper fluid transfer. It is compatible with nearly all vehicles that have disc brakes in the front and disc brakes in the rear. It is made for a 4 wheel disc proportioning valve.

Why We Like This:

Proportional distribution of pressure to the front and rear brakes for preventing rear locking
Evenly distribute the brake pressure to prevent rear lock
Universal for disc disc cars or trucks
Universal pv4 combination-proportioning valve & disc brakes

Best original AC Delco style: FEXON 4 wheel Disc Brake Proportioning Valve

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We know from years of feedback from readers, customers and amazon sellers, what most people want in a convenient and appropriate valve. The fexon 4 wheel disc brake proportioning valve is exactly that - it's a simple valve that hits all the right notes. This PV2 Combination-Proportioning Valve Fits most OEM dual-reservoir type master cylinders. It has standard 9/16"-18 and 1/2"-20 fittings. It is for use with disc brake front and drum rear systems.

Why We Like This:

Replacement for gm, ford, mopar, or chevy
Proportioning valve fits most oem dual
New and hot release

Best Easy To Use: Powerworks 4 wheel Disc Brake Proportioning Valve

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This pv-4 proportioning valve works on almost any classic truck, or muscle car, and nearly all vehicles that have disc brakes in the front and disc brakes in the rear. This proportional valve / combination valve helps to distribute the pressure sent to the front and rear brakes proportionally, effectively preventing rear lockup. It has standard 9/16"-18 and 1/2"-20 fittings.

This valve can be used for all 3/16 brake lines with various adapters. The combination/prop valve has five connections. It has the larger front outlet ports for up to the 1/4 inch brake line. This valve can be used for a smaller car, truck.

Why We Like This:

Easy to install and easy to bleed
Good investment for long term