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1955-57 Chevy Belair Hydropower Brake Booster Kit

1955-57 Chevy Belair Hydropower Brake Booster Kit
Part #:HB2-C5557
Brakes Type


Our Hydropower hydraulic brake assist power booster fits 1955-57 Chevy Belair and generates up to 1800psi of line pressure to the brake calipers. It is fitted with a POL master cylinder and proportioning valve. This kit is powered by hydraulic line pressure from the power steering pump. Firewall and valve cover clearance is equivalent to a 7" diameter vacuum booster. The firewall brackets are correct for 55-57 Chevy Belair applications.

The average power steering pump puts out from 800psi to 1400psi line pressure. The Hydropower® uses this to convert to pressure to apply against the master cylinder. This greatly improves stopping performance and driver feedback. These hydraulic power boosters can be easily installed on an existing vacuum booster vehicle or used to convert a manual brake setup to power with ordinary hand tools and average mechanical ability.

Kit includes:

  • Hydraulic brake assist power booster
  • 1.00" bore POL master cylinder
  • POL proportioning valve, bracket and lines (works with front disc & rear disc or drum brakes)
  • Firewall Mounting brackets
  • Limited Lifetime Warranty


Steering hose hookup kits available in the Suggested Parts below. These are remanufactured units.
If your vehicle is equipped with an original Treadle Vac system you will have to make a plate that will cover the original mount hole on the firewall to complete this installation.
CA Prop 65 Warning - cancer and reproductive harm

What does this fit?

1955 1956 1957 Chevy Belair, 210, 150, Nomad and Wagon

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