PSA911 Power Brake Servo for Audi A4 8D2 B5 1994-2001

Part Name : Booster, Vacuum Power Brake ; Master VAC Assembly, Servo freno
Part #.: PSA911, 4B3612107, 4B3612107B, 4B3612107C, PSA923

Conditions: Brand new, High Quality

This Part Fits: 

Audi A4 8D2 B5 1994-2001
Audi A6 4B C5  1994-2001
Volkswagen Passat 3B2 1994-2005
Audi A4 1999-2001
Audi A6 2000-2001
Audi Allroad 2001-2005
Audi RS6 2003-2004
Audi S4 2000-2002
Audi S6 2001
Volkswagen Passat 1999-2002

 

 

Remarks: 
Custom design is available(based on drawings or sample).

 

What is Brake Booster and its function in vehicle ?   

 

The brake booster is designed to create a greater braking force from a minimum pedal effort, using a difference in atmospheric pressure and the engine’s manifold vacuum. It increases the pedal force 2 to 8 times depending on the size of the diaphragm. The brake booster is located between the brake pedal and the master cylinder.

When pressure is applied to the brake pedal, pressure is exerted on the booster air valve. With pressure created by the booster the master cylinder is applied. Should the booster malfunction, the normal mechanical braking force of the master cylinder is maintained.