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![Power Brake Unit Fits Select 1973-1987 Chevrolet & GMC C-Series Trucks [Disc/Disc]](https://www.jegs.com/images/mini_750/500/555/555-631971.jpg)
Vehicle Info NeededJEGSPART NUMBER: 555-631971
Power Brake Unit Fits Select 1973-1987 Chevrolet & GMC C-Series Trucks [Disc/Disc]
$31199$329.99You Save$18.00
Ships on Sep 08, 2026
Lowest Price GuaranteeGM Truck, Disc Front & Disc Rear
Power Brake UnitFits Select 1973-1987 Chevrolet & GMC C-Series Trucks Disc/Disc Includes:
- 11 in. Dual Diaphragm Power Booster
- Dual Reservoir Cast Iron Master Cylinder
- Firewall Mounting Brackets
- Pedal Rod Extension
JEGS 555-631971 Power Brake Unit Features:
- For Disc Front and Disc Rear Applications
- Ford Style Cast Iron 1 1/8 in. Bore Dual Reservoir Master Cylinder with Single Bail Cap and Bleeder Screws
- Black Powder Coated 11 in. Dual Diaphragm Power Booster
- Power Booster Vacuum Port Connector
- Black Powder Coated Firewall Mounting Brackets
- Truck Pedal Rod Extension
JEGS 555-631971 Power Brake Unit Note:
- Brake Proportioning Valve is Required and Sold Separetely. See Items You Need Listing Above.
Improve Your Stopping Distance with a Power Brake Conversion Kit
JEGS power brake conversion kits provide better stopping distance to increase vehicle safety by transforming your manual brakes into an improved power-assisted system. All power brake conversion kits include a master cylinder, power brake booster, mounting brackets, and other necessary components for easy installation. We offer several style options to meet your brake improvement needs.
Part TypeBrake Master Cylinder and Booster Assembly
Product LineJEGS Power Brake Booster Conversion Kits
BrandJEGS
Package Height12.75
Package Width18.0
Package Length18.0
Weight24.5 PG
Part CategoryReplacement Parts
Brake Booster FinishBlack Powder Coat
Brake Booster TypeDual Vacuum diaphragm
Master Cylinder FinishNatural
Mounting Hole Quantity6 holes
Brake Booster IncludedYes
Master Cylinder Bore Size1.125 in (28.575 mm)
Booster Mounting Bracket IncludedYes
QuantitySold as an Assembly
Mounting Hardware IncludedNo
Brake Booster Diameter11 in (279.4 mm)
Brake Pedal Rod Extension IncludedYes
Bowl DesignDual
Rear Brake TypeDisc
Brake Booster MaterialSteel
Master Cylinder MaterialCast Iron
Master Cylinder Cap IncludedYes
Front Brake TypeDisc
Reservoir MaterialCast iron
Master Cylinder IncludedYes
Part FitmentSemi Universal
Reservoir IncludedYes
Package Qty1
Package TypeEA
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