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![Power Brake Unit Fits Select 1973-1987 Chevrolet & GMC Trucks, w/Cast Iron Master Cyl. & Proportioning Valve [Disc/Drum]](https://www.jegs.com/images/mini_750/500/555/555-631962.jpg)
Vehicle Info NeededJEGSPART NUMBER: 555-631962
Power Brake Unit Fits Select 1973-1987 Chevrolet & GMC Trucks, w/Cast Iron Master Cyl. & Proportioning Valve [Disc/Drum]
$41599$439.99You Save$24.00
Ships on 10/26/2026
Lowest Price GuaranteeGM Truck, Disc Front & Drum Rear
Power Brake UnitFits Select 1973-1987 Chevrolet & GMC Trucks See Fitment Tab for Applications Disc/Drum Includes:
- 11 in. Power Booster w/Brackets
- 1 in. Bore Master Cylinder
- Proportioning Valve
- Pedal Rod
JEGS 555-631962 Power Brake Unit Features:
- Fits 1973-1987 Chevy & GMC Trucks
- Front Disc and Rear Drum Applications
- Cast Iron 1 in. Bore Dual Reservoir Master Cylinder with Dual Bail Cap
- Black Powder Coated 11 in. Dual Diaphragm Power Booster
- Power Booster Vacuum Port Connector
- Black Powder Coated Firewall Mounting Brackets
- Truck Pedal Rod Extension
- Left Mount Proportioning Valve Kit Disc/Drum
- Brake Warning Light Switch & Connector
- Pre-Bent Brake Lines & Bracket
- (2) 3/8 in.-24 & (1) 9/16 in.-20 fitting needed to install valve
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 Height13.9
Package Width15.5
Package Length15.7
Weight31.18 PG
Part CategoryReplacement Parts
Brake Booster FinishBlack Powder Coated
Brake Booster TypeDual Vacuum diaphragm
Master Cylinder FinishNatural
Mounting Hole Quantity4 holes
Brake Booster IncludedYes
Master Cylinder Bore Size1 in (25.4 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 TypeDrum
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
Vendor Part NumberCT-205
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
