Dodge, Jaguar, Hummer, Oldsmobile Hydro-booster

5003330AA, 5003330AB, 5003330AC, 5018222AA

DODGE RAM 1500 PICKUP 2000 DODGE RAM 3500 PICKUP 1998-2002 DODGE RAM 4000 2000-2002 (V8/V10; L6,5.9L)

5093406AA, 5179891AA, 5179891AB, 5179891AC, 52013874AB, 52013874AC, 52013874AD

DODGE RAM 2500 PICKUP 2003-2010 DODGE RAM 3500 PICKUP 2003-2010 DODGE RAM 4000 2005-2009 (L6,6.7L; V8 5.7L/6.4L)

4116350, 4116423, 4210816

DODGE B300 1978-1980 DODGE CB300 1979-1980 DODGE D100 PICKUP 1978-1979 DODGE W200 PICKUP 1978-1980

52009644AA

DODGE RAM 2500 PICKUP 1997 DODGE RAM 3500 PICKUP 1997

68144663AA

RAM 2500 2012-2015 RAM 3500 2012-2015

JLM1556

JAGUAR VANDEN PLAS 1988-1989 JAGUAR XJ6 1988-1989

15212823, 15813688, 15861643

HUMMER H2 (2005 - 2007)

19258790, 25939759

HUMMER H3 2006-2010 HUMMER H3T 2009-2010

563874, R2772342, AA1527127, 14PB4134

OLDSMOBILE CUTLASS 1979 OLDSMOBILE CUTLASS CALAIS 1979 OLDSMOBILE CUTLASS SALON 1979 OLDSMOBILE CUTLASS SUPREME 1979

#563902

OLDSMOBILE 98 1978 OLDSMOBILE CUSTOM CRUISER 1978 OLDSMOBILE DELTA 88 1978

#563882

OLDSMOBILE 98 1979 OLDSMOBILE CUSTOM CRUISER 1979 OLDSMOBILE DELTA 88 1979

#2501588C91

INTERNATIONAL 1754 1988-1989 INTERNATIONAL 1854 1988-1989 INTERNATIONAL 1954 1988-1989

#BX2771659

INTERNATIONAL 3000 1996 INTERNATIONAL 3900FC 1991-1994

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.