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11 in Dual Chrome Firewall Booster & Master Cylinder, 1973-87 Chevy Truck

CPP high-performance automotive parts for classic cars
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Part #
7387BB24-11C
In Stock
$619.00
1973-87 Chevy Truck, 11 in Chrome Dual Diaphragm Firewall Brake Booster & 1.125 in Bore Master Cylinder and Proportioning Valve, works for 2 and 4 Wheel Disc
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Prop 65 warning
The CPP Complete Power Brake Booster Kit (Part Number 7387BB24-11C) fits 73-87 Chevy Trucks. It includes an 11" dual chrome-plated booster, master cylinder, and proportioning valve combo. Compatible with 2 and 4 wheel disc systems.
More Information
Product Name 11 in Dual Chrome Firewall Booster & Master Cylinder, 1973-87 Chevy Truck SKU 7387BB24-11C
Bleeder Kit Included Yes Brake Booster Diameter 11
Brake Booster Finish Chrome Brake Booster Type Dual Diaphragm
Master Cylinder Bore Size 1.125 Master Cylinder Finish Chrome
Master Cylinder Material Aluminum Master Cylinder Type CPP Left Side Ports
Hardware Included Yes Works With 2 Wheel Disc Yes
Works With 4 Wheel Disc Yes Works With 4 Wheel Drum No
Proportioning Valve Type Side Mount Left Hand Proportioning Valve Included Yes
Brake Booster Kit Type Complete Booster Kits Master Cylinder Included Yes
Brake Pedal Extension Rod Included Yes Warranty Yes
Prop65 Yes Brand CPP
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Customer Questions
Since this relocates the proportioning valve, is there a brake line kit? Or do you have to make all custom brake lines
Hello and thank you for showing interest in our products. Unforutnately we do not offer a brake line kit for this truck. If you do decide to order this kit you will need to make your brake lines. 
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will this set up work with 4 wheel disc brakes
Hello, yes this kit will work with 4 wheel disc brakes.
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Does this fit 85 square body
Hello Alex,  Unfortunately not. The square is a it unique due to the fact that it used an 11” double diaphragm booster, with that said the part number you are after is 7387BB24-11C.
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CPBK Bleeder Kit Instructions
Master Cylinder Instructions
PVK instructions

This kit includes:

  1. Fixed

  2. P/N: 7387BB-D-C

    • Description: Chrome Power Brake Booster
    • Quantity: 1

  3. P/N: MC-118-AC

    • Description: Chrome Aluminum Power Master Cylinder
    • Quantity: 1

  4. P/N: PVKS-C1

    • Description: Proportioning Valve W/Bracket & Lines Chrome Driver's Side, Firewall Mount,, 1/2x20 & 9/16x18 Ports
    • Quantity: 1

  5. P/N: CPP-BK

    • Description: Bleeder Kit
    • Quantity: 1

  6. P/N: TECH

    • Description: Brake Trouble Shooting Guide
    • Quantity: 1
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