Information - Brake Servo

The brake actuator is required in order to transmit the force, applied by the driver when pressing the brake pedal, to all the braking mechanisms of the wheels. Usually, modern cars are equipped with hydraulic brake actuators, where a special brake fluid is the main working element. The components of the hydraulic brake system drive are brake pedals, working brake cylinders, brake master cylinder, brake hoses, and vacuum brake booster. In order to slow down or stop the car, the driver must press the brake pedal, then this force is passed through a rod to the piston referring to the master brake cylinder.

Next, the piston presses the brake fluid, filled into the system. The brake fluid redirects the force to the wheel brake cylinders through fuel hoses; at the same time in the brake cylinder the pistons come forward, pressing the brake pads. Resulting from this process, the pads get pressed against the brake discs or brake drums, the wheel motion gradually slows down, and the car finally stops.

Modern hydraulic brake actuators consist of two independent circuits for each pair of wheels. It should be noted that the in this case circuits do not necessarily connect the wheels of the same axis.

As for the vacuum brake booster, it is necessary in order to improve the operation of the entire brake system, and to decrease the effort applied by the driver when braking. This amplifier (booster) is in conjunction with the master cylinder. The main part of the amplifier is a space, divided into two by a rubber diaphragm. Because of the pressure drop and sufficient diaphragm area, the effort while pressing the pedal may be significantly reduced. The broken item can be easily replaced by the car owner himself, or in a garage. And it will be a lot more profitable to order in our online store the necessary parts, such as bumpers, body sides, or the expansion valves.

Brake Booster at low cost: Top Spares

Brake Booster for vehicles without brake assist (TRW, PSA419)
-12%
Brake Booster | TRW PSA419 Article №: PSA419
TRW Brake Booster PSA419
£ 156,49
£ 137,71
incl. 20% VAT, Shipping
Over 100 items in stock
  • Manufacturer Restriction TRW
  • Diameter [in] 9
Details
Brake Booster ATD/AXR for left-hand drive vehicles for ESP APK/AVH/AZG/BEV (TRW, PSA464)
-12%
Brake Booster | TRW PSA464 Article №: PSA464
TRW Brake Booster PSA464
£ 141,99
£ 124,95
incl. 20% VAT, Shipping
Over 100 items in stock
  • Manufacturer Restriction ATE
  • Diameter [in] 10
Details
Brake Booster for right-hand drive vehicles (ATE, 03.7860-0702.4)
-12%
Brake Booster | ATE 03.7860-0702.4 Article №: 03.7860-0702.4
ATE Brake Booster 03.7860-0702.4
£ 187,49
£ 164,99
incl. 20% VAT, Shipping
Over 100 items in stock
  • Parameter T52/4
  • Diameter [in] 10
  • Operating Mode Pneumatic
  • Brake System ATE
Details
Seal, vacuum hose connector pipe (ATE, 03.7718-7203.1)
-12%
Seal, vacuum hose connector pipe | ATE 03.7718-7203.1 Article №: 03.7718-7203.1
ATE Seal, vacuum hose connector pipe 03.7718-7203.1
£ 3,49
£ 3,07
incl. 20% VAT, Shipping
Over 100 items in stock
  • Outer diameter [mm] 28,0
  • Inner diameter [mm] 13,0
  • Thickness [mm] 9,5
Details
Brake Booster for left-hand drive vehicles (ATE, 03.7858-3632.4)
-12%
Brake Booster | ATE 03.7858-3632.4 Article №: 03.7858-3632.4
ATE Brake Booster 03.7858-3632.4
£ 299,99
£ 263,99
incl. 20% VAT, Shipping
Over 100 items in stock
  • Parameter T52 Tandem
  • Diameter [in] 9, 8
  • Operating Mode Pneumatic
  • Brake System ATE
  • Part number of recommended accessories 03.0655-0005.2
  • Observe dimensions
  • MAPP code available
Details
Brake Booster for vehicles with ABS (ATE, 03.7760-8103.4)
-12%
Brake Booster | ATE 03.7760-8103.4 Article №: 03.7760-8103.4
ATE Brake Booster 03.7760-8103.4
£ 218,49
£ 192,27
incl. 20% VAT, Shipping
Over 100 items in stock
  • Parameter T52
  • Diameter [in] 10
  • Operating Mode Pneumatic
  • Brake System ATE
Details
Brake Booster for vehicles without brake assist (TRW, PSA709)
-12%
Brake Booster | TRW PSA709 Article №: PSA709
TRW Brake Booster PSA709
£ 206,49
£ 181,71
incl. 20% VAT, Shipping
Over 100 items in stock
  • Manufacturer Restriction TRW
  • Diameter [in] 8 / 9
Details
Brake Booster for right-hand drive vehicles (TRW, PSA366)
-12%
Brake Booster | TRW PSA366 Article №: PSA366
TRW Brake Booster PSA366
£ 177,99
£ 156,63
incl. 20% VAT, Shipping
Over 100 items in stock
  • Manufacturer Restriction ATE
  • Diameter [in] 10
Details
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