Hydro-booster 1618765 1620210 for BUICK LESABRE/CADILLAC DEVILLE/PONTIAC CATALINA 81-85

Part Name : Hydraulic Brake Booster; Hydro-booster
Part #. : 1618765, 1620210, 527200

Conditions: Brand new, OE replacement

This Part Fits:

BUICK ELECTRA 1981-1985
BUICK ESTATE WAGON 1981-1983
BUICK LESABRE 1981-1985
CADILLAC DEVILLE 1980-1984
CADILLAC FLEETWOOD 1980-1985
CHEVROLET CAPRICE 1981-1985
CHEVROLET IMPALA 1981-1985
OLDSMOBILE 98 1981-1984
OLDSMOBILE CUSTOM CRUISER 1981-1985
OLDSMOBILE DELTA 88 1981-1985
PONTIAC BONNEVILLE 1981
PONTIAC CATALINA 1981
PONTIAC LAURENTIAN 1981
PONTIAC PARISIENNE 1981-1985

 

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.