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![Power Brake Conversion Kit Fits Select 1955-1958 Chevrolet Full Size Models [Disc/Disc]](https://www.jegs.com/images/mini_750/500/555/555-631175.jpg)
Vehicle Info NeededJEGSPART NUMBER: 555-631175
Power Brake Conversion Kit Fits Select 1955-1958 Chevrolet Full Size Models [Disc/Disc]
$40399$444.99You Save$41.00
Ships on Sep 04, 2026
Lowest Price GuaranteeGM Car, Disc Front & Disc Rear
Power Brake Conversion KitFits Select 1955-1958 Chevy Full Size Models See Fitment Tab for All Applications Disc/Disc 1.125 in. Bore Master Cyl. 8 in. Dual Diaphragm Booster Aluminum Proportioning Valve Chrome Sold as a Kit
JEGS 555-631175 Power Brake Conversion Kit Features:
- Fits 1955-1958 Chevrolet Bel Air, 1958 Chevrolet Biscayne, 1958 Chevrolet Brookwood, 1957-1958 Chevrolet Del Ray, 1958 Chevrolet Impala, 1955-1958 Chevrolet Nomad, 1955-1957 Chevrolet One-Fifty Series, 1958 Chevrolet Yeoman
- For front disc and rear drum applications only
- 1.125 in. bore dual-bowl master cylinder for improved hydraulic performance
- 9/16 in.-18 and 1/2 in.-20 master cylinder outlets
- 8 in. vacuum dual-diaphragm brake booster
- 3/8 in.-24 and 9/16 in.-18 proportion valve outlets
- Steel brake booster construction provides strength and long service life
- Includes brake pedal rod extension and required mounting hardware
Part TypeBrake Master Cylinder and Booster Assembly
BrandJEGS
Package Height14.0
Package Width15.0
Package Length15.0
Weight25.0 PG
Part CategoryReplacement Parts
Brake Booster TypeVacuum dual diaphragm
Master Cylinder FinishChrome
Master Cylinder Bore Size1.125 in. (28.575 mm)
QuantitySold as a kit
Mounting Hardware IncludedYes
Brake Pedal Rod Extension IncludedYes
Bowl DesignDual
Brake Booster Diameter ( In.)8 in. (203.2 mm)
Rear Brake TypeDisc
Brake Booster MaterialSteel
Master Cylinder MaterialAluminum
Master Cylinder Cap IncludedYes
Front Brake TypeDisc
Reservoir MaterialAluminum
Part FitmentDirect Fit
Reservoir IncludedYes
Package Qty1
Package TypeEA
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