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Proportioning Valve W/Bracket & Lines Undermount, Frame Mount, 1/2x20 & 9/16x18 Ports, Black

CPP high-performance automotive parts for classic cars
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Part #
PBKU-A0
In Stock
$115.00
2 or 4 Wheel Disc, Aluminum, Undermount, Frame Mount, Black Bracket, 1/2x20 & 9/16x18 Master Ports
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Prop 65 warning
The CPP Proportioning Valve W/Bracket & Lines (Part Number PBKU-A0) is designed for 2 or 4 wheel disc systems. It features a durable aluminum construction. The valve is undermount and frame mount compatible. It includes a black bracket for easy installation. Master ports are 1/2x20 and 9/16x18.
More Information
Product Name Proportioning Valve W/Bracket & Lines Undermount, Frame Mount, 1/2x20 & 9/16x18 Ports, Black SKU PBKU-A0
Material Aluminum Finish Clear
Adjustable No Works With 2 Wheel Disc Yes
Works With 4 Wheel Disc Yes Bracket And Lines Included Yes
Brake Warning Light Switch Wire Included No Brake Light Switch Included No
Master Cylinder Line Size 9/16x18 Rear and 1/2x20 Front Bracket Finish Black Zinc
Warranty Yes Prop65 Yes
Brand CPP Mounting Location Undermount
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Customer Questions
Does a 4 wheel disc need a different proportioning valve?
Not when you buy one of our CPP proportioning valves. Our proportioning valve will work with both disc/drum or disc/disc applications. 
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What does a brake proportioning valve do?
A brake proportioning valve regulates the brake fluid pressure between the front and rear brakes, ensuring balanced braking power.  
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What size fitting is the back of the proportioning valve?
The fitting size is 9/16-18" but we sell a kit that would accommodate any popular size adapter (part number CP2091) which includes 3/8-24", 7/16-24", and 1/2-20".
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Do I need a proportioning valve when upgrading from drum to disc?
Yes! A proportioning valve is needed to ensure the proper amount of brake fluid pressure is going to the front and rear wheels.  
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PVK instructions

This kit includes:

  1. Fixed

  2. P/N: PV-24AH

    • Description: Aluminum Proportioning Valve for 2 & 4 Wheel Disc (2 Port)
    • Quantity: 1

  3. P/N: PVL-U

    • Description: Proportioning Valve Lines to the Cylinder Undermount Frame Mount, 9/16 x 18 rear and 1/2 x 20 Front
    • Quantity: 1

  4. P/N: 10880-BLU

    • Description: Inv Fitting 3/16in Inv Plug Blue Zinc
    • Quantity: 1

  5. P/N: PVBH-B

    • Description: Booster Bracket Hardware Type B
    • Quantity: 1

  6. P/N: 11028-B

    • Description: Prop Valve Under Mount Bracket Black
    • Quantity: 1
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