Servos and brake force correctors
More informationAt the Global Parts automotive store, we offer a wide selection of original used car parts, including brake boosters and brake fluid regulators for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. The brake boosters and brake fluid regulators we offer undergo quality control to ensure you receive a top-quality product.
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Part no. 8K0612103M-1
Audi S5 8T Brake Servo Master Cylinder Vacuum Booster 8K0612103M
£42.95
Free delivery: Mar 19
If paid before 14:00
Part no. 8K0612103M
Audi S5 8T Brake Servo Master Cylinder Vacuum Booster 8K0612103M 8K0 612 107 C
£28.95
Free delivery: Mar 19
If paid before 14:00
Part no. 8K0612103E
Audi A4 B8 A5 8T Brake Servo Booster Master Cylinder Module 8K0612103E
£37.95
Free delivery: Mar 19
If paid before 14:00
Part no. RHD-5Q2614105BJ
Audi RS3 8V VW Golf Mk7 GTI Brake Servo Booster Master Cylinder 5Q2614105BJ
£47.95
Free delivery: Mar 19
If paid before 14:00
Part no. 8K0612103N
Audi A5 8T 2.0 TDI CNHA Brake Servo 8K0612103N
£28.95
Free delivery: Mar 19
If paid before 14:00
Part no. 8K0612103E-2
Audi A4 B8 A5 8T Brake Servo Booster Master Cylinder Module 8K0612103E
£37.95
Free delivery: Mar 19
If paid before 14:00
Part no. 8W0612103K
Brake Servo Audi A4 B9 A5 F5 Braking Unit Master Cylinder Booster 8W0612107
£56.95
Free delivery: Mar 19
If paid before 14:00
Part no. RHD-8K2611931N
Audi S5 8T MAP Pressure Brake Servo Vacuum Hose Pipe Line Sensor 8K2611931N
£13.95
Free delivery: Mar 19
If paid before 14:00
Part no. 80A612107
Audi Q5 Mk2 FY Brake Servo Booster Master Cylinder ABS 80A612103D
£56.95
Free delivery: Mar 19
If paid before 14:00
Part no. RHD-4G2612103G
Audi A6 C7 Brake Servo Master Cylinder 4G2612103G
£13.95
Free delivery: Mar 19
If paid before 14:00
Part no. RHD-5Q2614105AR
Audi A3 8V Brake Servo Booster Master Cylinder 5Q2614105AR
£23.95
Free delivery: Mar 19
If paid before 14:00
Part no. 6N1611349B
Audi A4 S4 B7 Brake Fluid Reservoir Screw Filler Tank Cap 6N1611349B
£13.95
Free delivery: Mar 19
If paid before 14:00
Part no. RHD-8S2611931
Audi TT 8S Brake Servo Vacuum Hose Pipe Line Petrol Engine 8S2611931
£18.95
Free delivery: Mar 19
If paid before 14:00
Part no. RHD-8E0612107L
Audi S4 B7 4.2 V8 Petrol Brake Servo Booster Master Cylinder 8E0612105Q
£85.95
Free delivery: Mar 19
If paid before 14:00
Part no. 8E0612105AJ
Audi A4 B8 Brake Servo Braking Unit Master Cylinder Booster 8E0612105AJ
£47.95
Free delivery: Mar 19
If paid before 14:00
Part no. RHD-1K2614105BG
VW Golf MK6 Audi A3 8P Brake Servo Braking Master Cylinder Booster 1K2614105BG
£37.95
Free delivery: Mar 19
If paid before 14:00
Part no. RHD-6R2614105F
Audi A1 8X Brake Servo Master Cylinder Brake Booster Unit 6R2614105F
£51.95
Free delivery: Mar 19
If paid before 14:00
Part no. RHD-4E2612105G
Audi A8 D3 Brake Servo Booster Master Cylinder Brake Unit 4E2612105G
£23.95
Free delivery: Mar 19
If paid before 14:00
Part no. RHD-8W2611931L
Audi A5 F5 A4 B9 Brake Servo Vacuum Hose Line Tube Pipe 8W2611931L
£47.95
Free delivery: Mar 19
If paid before 14:00
Part no. RHD-5Q2614105BL
Audi TT FV Brake Servo Unit Master Cylinder 5Q2614105BL
£47.95
Free delivery: Mar 19
If paid before 14:00
Part no. 6R1612041AL
Audi A1 8X MAP Pressure Brake Servo Vacuum Hose Pipe Line Sensor 6R1612041AL
£23.95
Free delivery: Mar 19
If paid before 14:00
Part no. RHD-4K0612103F
Audi A6 C8 Brake Servo Booster Master Cylinder 4K0612103F
£142.95
Free delivery: Mar 19
If paid before 14:00
Part no. RHD-4K0612103
Audi A6 C8 Brake Servo Booster Master Cylinder 4K0612103 0204J00250
£32.95
Free delivery: Mar 19
If paid before 14:00
Part no. RHD-4F0612105M-1
Audi A6 C6 Brake Servo Booster Master Cylinder Tank Unit 4F0612105M
£47.95
Free delivery: Mar 19
If paid before 14:00
Part no. 5Q2614105CR
Audi Q2 GA Brake Servo Braking Unit Master Cylinder Booster 5Q2614105CR
£28.95
Free delivery: Mar 19
If paid before 14:00
Part no. RHD-4F0612105M
Audi A6 C6 Brake Servo Booster Master Cylinder Unit 4F0612105M
£28.95
Free delivery: Mar 19
If paid before 14:00
Part no. RHD-5WC614105AA
Audi A3 8Y Volkswagen Golf Mk8 Servo Brake Booster Master Cylinder 5WC614105AA
£379.95
Free delivery: Mar 19
If paid before 14:00
Part no. 8E0612105P-1
Audi A4 B7 Brake Servo Brake Master Cylinder Booster ABS Unit 8E0612105P
£56.95
Free delivery: Mar 19
If paid before 14:00
Part no. RHD-8K2611931Q
Audi A4 B8 Brake Servo Vacuum Pipe Hose Line 8K2611931Q
£18.95
Free delivery: Mar 19
If paid before 14:00
Part no. RHD-8W2611931K
Audi A5 F5 A4 B9 Brake Servo Vacuum Hose Line Tube Pipe 8W2611931K
£23.95
Free delivery: Mar 19
If paid before 14:00
Part no. RHD-5N2614105N
Audi Q3 8U 2.0 TDI Brake Servo Master Cylinder Unit 5N2614105N
£70.95
Free delivery: Mar 19
If paid before 14:00
Part no. 8T0612107
Audi A8L 4H Brake Servo Booster Master Cylinder 8T0612107 4H0612103C
£37.95
Free delivery: Mar 19
If paid before 14:00
Part no. 5N2614105K
Audi Q3 8U 2.0 TFSI Brake Servo Master Cylinder Unit 5N2614105K
£47.95
Free delivery: Mar 19
If paid before 14:00
Part no. RHD-5Q2614105BG
Audi S3 8V Quattro Brake Servo Booster Master Cylinder 5Q2614105BG
£47.95
Free delivery: Mar 19
If paid before 14:00
Part no. RHD-5Q2614105AP
Audi A3 8V Brake Servo Booster Master Cylinder ABS Unit 5Q2614105AP
£32.95
Free delivery: Mar 19
If paid before 14:00
Part no. RHD-8K2611931G
Audi S5 8T MAP Pressure Brake Servo Vacuum Hose Pipe Line Sensor 8K2611931G
£13.95
Free delivery: Mar 19
If paid before 14:00
Part no. 8K0612107B
Audi A4 B8 Brake Servo Booster Master Cylinder Unit 8K0612107B
Product currently unavailable
Part no. RHD-4G2612103H
Brake Servo Audi A6 C7 A7 4G Booster Master Cylinder Unit 4G2612103H
£13.95
Free delivery: Mar 19
If paid before 14:00
Part no. 8K0612103L
Audi A4 B8 Brake Servo Master Cylinder Vacuum Booster 8K0612103L
£47.95
Free delivery: Mar 19
If paid before 14:00
Part no. 8K0611357
Audi A5 8T Servo Brake Expansion Tank Cover Cap Level Sensor 8K0611357
£13.95
Free delivery: Mar 19
If paid before 14:00
Part no. RHD-7L8612101T
Audi Q7 4L S LINE Power Brake Servo Unit Vacuum Booster 7L8612101T
£99.95
Free delivery: Mar 19
If paid before 14:00
Part no. 4M0612103AD
Audi Q7 4M Brake Servo Booster 4M0612103AD
£170.95
Free delivery: Mar 19
If paid before 14:00
Part no. RHD-5N2614106A
Audi Q3 8U Quattro 2.0 TDI Brake Booster Master Cylinder 5N2614106A 5N2614105H
£85.95
Free delivery: Mar 19
If paid before 14:00
Part no. 5Q2614105CN
Audi TT FV Brake Servo Brake Master Cylinder Booster ABS Unit Petrol 5Q2614105CN
£42.95
Free delivery: Mar 19
If paid before 14:00
Part no. RHD-8K2611931F
Audi A5 8T MAP Pressure Brake Servo Vacuum Hose Pipe Line Sensor 8K2611931F
£13.95
Free delivery: Mar 19
If paid before 14:00
Part no. RHD-5WC614105BB
Audi A3 8Y 30 TFSI DXDE Brake Servo Booster Master Cylinder 5WC614105BB
£132.95
Free delivery: Mar 19
If paid before 14:00
Part no. 5WC614105AG
Audi RS3 8Y VW Golf Mk8 Brake Servo Master Cylinder Booster 5WC614105AG
£237.95
Free delivery: Mar 19
If paid before 14:00
Part no. RHD-424612105
Audi R8 42 Spyder Brake Servo Master Cylinder Unit 4.2 Petrol Engine 424612105
£66.95
Free delivery: Mar 19
If paid before 14:00
Part no. 5Q2614105CP
Audi A3 8V Diesel Brake Servo Brake Master Cylinder Booster ABS Unit 5Q2614105CP
£56.95
Free delivery: Mar 19
If paid before 14:00
Part no. RHD-83C614105C
Audi RSQ3 F3 Brake Servo Booster Master Cylinder Braking Unit 83C614105C
£56.95
Free delivery: Mar 19
If paid before 14:00
Part no. rhd-1K2614105AT
Audi A3 8P Brake Servo Booster Master Cylinder 1K2614105AT
Product currently unavailable
Part no. rhd-1K2614105AR
Audi A3 8P Brake Servo Booster Master Cylinder Unit 1K2614105AR
Product currently unavailable
Part no. 8W0612107
Audi A4 B9 Master Cylinder Brake Booster Servo Reservoir Unit 8W0612103B
Product currently unavailable
Part no. rhd-4F0612105F
Audi A6 C6 Brake Servo Booster Master Cylinder Brake Unit 4F0612105F
Product currently unavailable
Part no. RHD-5Q2614106D
Audi A3 8V 1.6 TDI Diesel Brake Servo Booster Master Cylinder Unit 5Q2614106D
Product currently unavailable
Part no. 8N2614105
Audi TT 8N 1.8T Brake Servo Booster Master Cylinder Unit 8N2614105
Product currently unavailable
Part no. 8E0612105P
Audi A4 B7 Brake Servo Brake Master Cylinder Booster ABS Unit 8E0612105P
Product currently unavailable
Part no. RHD-8J2614105N
Audi TT 8J Master Cylinder Brake Booster Servo Reservoir 8J2614105N
Product currently unavailable
Part no. 7L8612105P
Audi Q7 4L Brake Servo Brake Master Cylinder Booster Unit 7L8612105P 7L8612101
Product currently unavailable
Part no. 8K0612103K
Audi S5 8T Brake Servo Master Cylinder Vacuum Booster 8K0612103K
Product currently unavailable
Part no. RHD-8J2612107
Audi TT 8J 2.0 TFSI BWA Vacuum Brake Servo Booster 8J2612107
Product currently unavailable
Part no. RHD-5Q2614105BK
Audi A3 S3 8V Brake Servo Braking Unit Master Cylinder Booster 5Q2614105BK
Product currently unavailable
Part no. 8R0612103H
Audi Q7 4L Brake Servo Master Cylinder Vacuum Booster 8R0612103H
Product currently unavailable
Part no. 8E0612105AG
Audi A4 B7 A6 B5 Servo Master Cylinder Brake Braking Booster Unit 8E0612105AG
Product currently unavailable
Part no. 1K2614105T
Audi A3 8P Brake Servo Braking Unit Master Cylinder Booster 6850495
Product currently unavailable
Part no. 8J2614105K
Audi TT 8J 2.0 TFSI Master Cylinder Brake Booster Servo Reservoir 8J2614105K
Product currently unavailable
Part no. 5Q2614105CM
Audi S3 8V 2.0 TFSI Brake Servo Braking Unit Master Cylinder Booster 5Q2614105CM
Product currently unavailable
Part no. 8K0612107C
Audi A4 B8 Brake Servo Booster Master Cylinder Unit 8K0612107C
Product currently unavailable
Part no. 8T0612103A
Audi RS4 B8 Brake Servo Booster Master Cylinder Module 8T0612103A
Product currently unavailable
Part no. RHD-8J2614105P
Audi TT 8J 2.0 TFSI Master Cylinder Brake Booster Servo Reservoir 8J2614105P
Product currently unavailable
Part no. RHD-6R2614106G
Audi A1 8X Volkswagen Polo Brake Servo Unit Master Cylinder 6R2614106G
Product currently unavailable
Part no. 8K0612103N-1
Audi A5 8T 2.0 TDI CNHA Brake Servo 8K0612103N
Product currently unavailable
Part no. RHD-5Q2614105BG-1
Audi S3 8V Quattro Brake Servo Booster Master Cylinder 5Q2614105BG
Product currently unavailable
Part no. 8R0612107D
Audi Q5 8R Brake Servo Booster Master Cylinder Braking Unit 8R0612107D
Product currently unavailable
Part no. 8K0612103E-3
Audi S5 8T Brake Servo Booster Master Cylinder Module 8K0612103E
Product currently unavailable
Part no. 8R0612107B
Audi Q5 8R Brake Master Cylinder Servo 8R0612103D
Product currently unavailable
Part no. 8R0612107B-1
Audi Q5 8R Brake Master Cylinder Servo 8R0612103D
Product currently unavailable
Part no. RHD-8P2614105A
Audi RS3 8P Brake Servo Booster Master Cylinder Brake Unit 8P2614105A
Product currently unavailable
Part no. 5N2614105F
Audi Q3 8U 2.0 TDI Brake Servo Master Cylinder Unit 5N2614105F
Product currently unavailable
Part no. 8E0612107F
Audi A4 B7 Brake Servo Booster Master Cylinder 8E0612107F
Product currently unavailable
Part no. 8W0612103G
Audi A5 F5 Petrol Brake Servo Braking Unit Master Cylinder Booster 8W0612103G
Product currently unavailable
Part no. RHD-8J2612107-1
Audi TT 8J Vacuum Brake Servo Master Cylinder Tank 2.0 TFSI BWA 8J2611021C
Product currently unavailable
Part no. RHD-6R2611019B
Audi A1 8X 1.2 TSI Brake Servo Master Pump Cylinder Unit 6R2611019B
Product currently unavailable
Part no. RHD-8V2614105
Audi RS3 8V /Brake Servo Master Cylinder Booster 2.5 TFSI 8V2614105
Product currently unavailable
Part no. RHD-8J2612107A
Audi TT RS 8J 2.5 TFSI CEPA Vacuum Brake Servo Booster 8J2612107A
Product currently unavailable
Part no. 8E0612105N
Audi A4 B6 Brake Servo Brake Master Cylinder Booster ABS Unit 8E0612105N
Product currently unavailable
Part no. 8K0612107B-1
Brake Servo Audi A4 B8 A5 8T Booster Master Cylinder Unit 8K0612107B
Product currently unavailable
Part no. 8K0612107D
Audi A5 Power Brake Servo Unit Master Cylinder 8K0612107D
Product currently unavailable
Part no. 4F0612107E
Audi A6 C6 Brake Servo Booster Master Cylinder Unit 4F0612107E
Product currently unavailable
Part no. 8J0611931L
Audi TT 8J Vacuum Pipe Brake Booster Servo Line Hose 8J0611931K
Product currently unavailable
Brake boosters and force regulators for optimal pressure distribution
Optimal servos and braking force correctors
Brake servo and brake boosters are key components of the braking system, supporting its efficiency and improving driving safety. A brake booster increases braking power, reducing driver effort, while a brake booster optimizes the distribution of force across the vehicle's axles, preventing wheel lockup. At Global Parts, you'll find a wide selection of used car parts , including brake boosters and brake boosters, ideal for BMW , Audi , Mercedes , Volkswagen , Mini , and more .
What are servos and brake force correctors – definition and principle of operation
A brake booster (vacuum booster) is a component of a brake assist system that uses pressure differential (usually vacuum generated by the engine or a vacuum pump) to increase the force applied to the brake master cylinder. In practice, this means the driver can generate up to 3–5 times more braking power with the same pedal pressure. Standard servos range in diameter from 7 to 11 inches, which directly affects the power assist. The brake force regulator (rear axle pressure regulator) dynamically adjusts rear brake pressure based on vehicle load. In vehicles without electronic EBD, it operates mechanically or hydraulically, limiting pressure on the rear wheels during heavy braking. This maintains directional stability and traction. In modern designs (e.g. in the BMW 3 Series, Audi A4 or Volkswagen Passat models), the function of the classic equalizer is often supported by the ABS/EBD system, but the controller itself is still responsible for the basic calibration of the braking force distribution.
What are the functions of servos and braking force correctors ?
Servos and brake force regulators play important roles in the braking system:
- Increased braking power – The servo increases the pressure on the brake pedal, which facilitates effective braking.
- Optimised brake force distribution – Brake force regulator prevents the rear wheels from locking, especially in low grip conditions.
- Improved driving comfort – Thanks to the smooth operation of the braking system, driving becomes more comfortable and safe.
Technical parameters and compatibility with the braking system
In practice, the compatibility of the servo and the brake force corrector depends on several technical parameters:
- servo diameter (e.g. 8", 9", 10"),
- type of attachment to the front bulkhead,
- length of the pin cooperating with the brake master cylinder,
- pump type (1- or 2-circuit),
- type of system (ABS / ABS + EBD / without ABS).
Example operating parameters
| Element | Function | Typical parameters | Impact on safety |
|---|---|---|---|
| Brake servo | Pressure force support | Vacuum 0.6–0.9 bar, diameter 7–11" | Shortening the braking distance by up to several meters at 100 km/h |
| Brake force corrector | Rear axle pressure adjustment | Proportional pressure reduction with load increase | Traction stability and slip limitation |
Correct matching of these components to the vehicle model directly affects braking efficiency, even wear of pads and discs, and optimal operation of the entire hydraulic system.
Why is it worth taking care of servos and braking force correctors ?
Malfunctioning brake boosters and regulators can lead to reduced braking performance and increased road safety. Typical symptoms include:
- Hard brake pedal – May indicate a brake booster failure.
- Uneven braking – Problems with the brake booster can cause excessive braking on one axle.
- Noises when braking – A damaged servo or equalizer can produce unusual noises. If you need a replacement, you'll find the right used car parts at Global Parts that will restore full efficiency to your braking system.
Step-by-step procedure for system operation during braking
- The driver presses the brake pedal.
- The servo uses vacuum to increase the pressure on the brake master cylinder.
- The pump generates hydraulic pressure in the brake lines.
- The brake force regulator regulates the pressure ratio between the front and rear axles.
- The calipers press the pads against the discs, generating friction and reducing the vehicle's speed. In a properly functioning system, the braking force distribution is on average around 60-70% front / 30-40% rear, which ensures stability and optimal use of tire grip.
How to choose the right servos and braking force correctors ?
When choosing servos and brake force correctors, there are several key aspects to consider:
- Vehicle-specific fit – Every braking system has its own specific technical requirements. At Global Parts, you'll find brake boosters and brake boosters perfectly matched to BMW , Audi , Mercedes , Volkswagen , Mini , and more .
- Technical condition – Used parts should be free from leaks, mechanical damage and pneumatic system defects.
- Brake System Compatibility – Make sure the components you choose are compatible with your vehicle's design and specifications.
Fit, OEM, VIN and integration with other components
The selection of a brake servo and brake booster should take into account design compatibility with the brake master cylinder, brake lines, and ABS system. In practice, matching is based on the vehicle's model, year, engine version, and VIN. These elements work directly with:
- brake pump,
- brake fluid reservoir,
- ABS/ESP module,
- calipers and brake cylinders. Proper compatibility ensures not only safety, but also savings in operating costs – proper pressure distribution reduces uneven wear of friction elements and improves the durability of the entire system.
Why is it worth choosing used servos and braking force correctors ?
Used car parts , such as used servos and brake force correctors , is a practical solution that allows you to save money while maintaining high quality. By choosing used braking system components, you gain:
- Lower costs – Used components are much cheaper than new ones, but offer equally high quality.
- Ecology – Recycling parts supports environmental protection and reduces waste.
- A wide range – In our store you will find used servos and braking force regulators for the most popular car brands.
How to take care of servos and braking force correctors ?
To ensure that servos and brake force correctors function reliably for a long time, it is worth following a few rules:
- Regular inspections – Check the condition of braking system components during periodic technical inspections.
- Maintain proper brake fluid level – Low fluid levels can damage the servo and other components.
- Respond to symptoms of malfunction – Noises, uneven braking or problems with the brake pedal are signals that faulty parts need to be replaced. If replacement is necessary, Global Parts has the right used car parts to restore the effectiveness and reliability of your braking system.
FAQ – Frequently asked questions about servos and brake force regulators
| Question | Answer |
|---|---|
| What is a brake booster? | A servo is a vacuum amplifier that increases the pressure on the brake master cylinder. This allows the driver to brake effectively with less effort. |
| What is a brake force regulator? | The equalizer is a pressure regulator in the rear circuit that adjusts the braking force to the vehicle load and prevents the rear axle from locking. |
| How does brake booster work? | The system uses the pressure difference (vacuum approx. 0.6–0.9 bar) to increase the pressure transmitted to the brake master cylinder. |
| Does the servo work with the ABS system? | Yes. The servo assists in generating pressure, and the ABS/EBD system electronically controls its distribution between the wheels. |
| What are the symptoms of a faulty servo? | The most common symptom is a hard brake pedal and increased force required to stop the vehicle. |
| Why is a brake booster important? | It is responsible for the vehicle's stability during braking, especially during sudden stops and with changing vehicle loads. |
| How to choose the right servo for your car? | Please take into account the model, year, engine version and compatibility with the brake master cylinder and ABS system. |
Summary: Servos and Brake Power Regulators at the Global Parts Automotive Store
Brake boosters and brake boosters are essential components of the braking system, increasing braking efficiency and precision. By maintaining their technical condition, you can improve driving comfort and safety. The Global Parts automotive store invites you to browse our wide selection of original used car parts . Whether you're looking for car parts for BMW , Audi , Volkswagen , Mercedes, Mini , and more, you'll find them at competitive prices. We strive to ensure every customer finds the right parts for their car, and if you have any questions or concerns about selecting the right components, we're happy to help! Please contact us – we're here to help! For more information and interesting facts, visit our automotive blog .