Hydro-booster 22504713 527171 for BUICK CENTURY/REGAL/CUTLASS/PONTIAC GRAND PRIX 1981

Part Name : Hydraulic Brake Booster; Hydro-booster
Part #. : 22504713, 527171

Conditions: Brand new, OE replacement

This Part Fits:

BUICK CENTURY 1981
BUICK REGAL 1981
OLDSMOBILE CUTLASS 1980-1981
OLDSMOBILE CUTLASS CALAIS 1980-1981
OLDSMOBILE CUTLASS CRUISER 1980-1981
OLDSMOBILE CUTLASS SALON 1980
OLDSMOBILE CUTLASS SUPREME 1980-1981
PONTIAC GRAND PRIX 1981

 

Remarks: 

WITHOUT MASTER CYLINDER

 

What is Hydraulic brake booster (Hydro-booster) ?

Hydroboost brake units use power steering pressure instead of engine vacuum for brake assist. This is sometimes necessary if the engine does not create enough vacuum to assist the braking system. This is true for diesel, turbocharged, and supercharged engines. Some manufacturer's use an engine driven vacuum pump to operate the vacuum booster instead of a installing a hydroboost brake system.

A hydroboost unit is located between the firewall and the master cylinder, just like a vacuum booster. It has hydraulic lines leading from the power steering pump to the power steering gear, much like the lines incorporated into the power steering system. It uses a spool valve and power piston to regulate pressure. A spring loaded or nitrogen gas charged accumulator is used in case of a power steering system failure.