What is the construction and purpose of the braking system and parts?

The braking system and parts are a set of elements responsible for reducing speed and stopping the vehicle. It includes, among others, discs, pads, calipers, lines, a brake master cylinder, and ABS control modules. Individual elements are located at the wheels, in the engine compartment, and in the car's hydraulic installation.

What are the braking system and parts used for?

The braking system and parts are used for controlled speed reduction and maintaining car stability during braking. Their task is to transfer force from the brake pedal to the wheels and convert motion energy into heat through friction. Without properly selected elements, the braking distance increases, and the operation of support systems may be limited.

What is the construction and function of a brake caliper?

A brake caliper is an element mounted at the hub and disc, whose task is to press the pads against the braking surface. A typical caliper consists of a body, a piston or pistons, guide pins, seals, and a bleeder screw. Depending on the version, it may work with a carrier, wear sensor, or parking brake mechanism.

How to select brake parts for a specific car?

It is safest to compare the OEM number, VIN, disc diameter, working thickness, mounting side, and caliper type. It is also worth checking if the car has ABS, ESP, an electric parking brake, or different axle variants in one model generation.

What symptoms indicate wear of braking system elements?

Typical symptoms include squeaking during braking, steering wheel vibrations, the car pulling to one side, a soft brake pedal, or an illuminated ABS warning light. Uneven caliper operation, fluid leaks, and disc overheating after a short drive may also indicate wear.

How does the installation and inspection proceed after replacing brake parts?

After installing the parts, you should check the mounting points, line routing, caliper freedom of movement, and brake fluid level. Then, the system is bled, checked for leaks, and a test drive is performed to assess braking uniformity and the operation of support systems.

Braking system and parts

At Global Parts, we offer a wide selection of original used car parts, including brake systems and parts for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. Our brake parts undergo quality control to ensure you receive a top-quality product.

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Audi A4 B8 Brake Caliper Electric Handbrake Rear Right O/S 8K0615404B

£23.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8K0615124C-1

Audi A4 B8 8K A5 8T Brake Caliper Caliper Carrier Front Right O/S 8K0615124C

£28.95

Free delivery: Aug 04

If paid before 14:00

Part no. 1K0615424J

Audi A3 8P Brake Caliper Rear Right O/S Wheel Brake Unit 1K0615424J

£18.95

Free delivery: Aug 04

If paid before 14:00

Part no. 1K0615423J

Audi A3 8P Brake Caliper Rear Left N/S Wheel Brake Unit 1K0615423J

£18.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8V0615424E

Audi A3 S3 8V Brake Caliper Rear Right O/S Wheel Braking Unit 310x22 8V0615424E

£75.95

Free delivery: Aug 04

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: Aug 04

If paid before 14:00

Part no. 8K0907801J

Audi A5 8T Parking Brake Module Handbrake Actuator Control Unit 8K0907801J

£18.95

Free delivery: Aug 04

If paid before 14:00

Part no. 5Q0611349B

Audi Skoda Seat VW Servo Reservoir Brake Fluid Tank Cap 5Q0611349B

£13.95

Free delivery: Aug 04

If paid before 14:00

Part no. RHD-8J2614105N

Audi TT 8J Master Cylinder Brake Booster Servo Reservoir 8J2614105N

£32.95

Free delivery: Aug 04

If paid before 14:00

Part no. 4F0615123

Audi A6 C6 Brake Caliper Front Left N/S Wheel Braking Unit 4F0615123

£28.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8J0614517

Audi TT 8J ABS Pump Hydraulic Brake Pump Control Module Braking Unit 8J0614517

£75.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8K0612103N

Audi A5 8T 2.0 TDI CNHA Brake Servo 8K0612103N

£28.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8E0612105AG

Audi A4 B7 A6 B5 Servo Master Cylinder Brake Braking Booster Unit 8E0612105AG

£37.95

Free delivery: Aug 04

If paid before 14:00

Part no. 4L0614517D

Audi Q7 4L ABS Brake Pump Hydraulic Unit Control Module 4L0614517D

£189.95

Free delivery: Aug 04

If paid before 14:00

Part no. 4F0615124

Audi A4 B7 Front Brake Caliper Right O/S Wheel Unit 4F0615124

£28.95

Free delivery: Aug 04

If paid before 14:00

Part no. RHD-1K2611349C

Audi A3 8P TT 8J VW Passat B6 B7 Golf Brake Fluid Tank Cap 1K2611349C

£28.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8K0907379CC

Audi A4 B8 ABS Brake Pump Hydraulic Control Modulator Unit ECU 8K0907379CC

£13.95

Free delivery: Aug 04

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: Aug 04

If paid before 14:00

Part no. 8K0615404E-1

Audi A5 8T Brake Caliper Rear Right O/S Wheel Brake Unit 8K0615404E

£42.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8V0615423E

Audi A3 8V Brake Caliper Braking Unit Rear Left N/S 8V0615423E

£66.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8P0615124A-1

Audi A3 S3 8P Front Brake Caliper Housing Carrier Right O/S Black 8P0615124A

£104.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8K0615404A

Audi A5 8T Rear Electric Brake Caliper Housing Right O/S 330x22mm 8K0615404A

£56.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8K0907379CJ

Brake Pump Audi A4 S4 B8 A5 8T ABS ESP Module Hydraulic Control 8K0907379CJ

£13.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8V0615124B

Audi S3 8V Brake Caliper Front Right O/S Wheel Braking Unit 8V0615124B

£94.95

Free delivery: Aug 5 – 12

If paid before 14:00

Part no. RHD-1K2614106H

Audi A3 S3 8P Brake Servo Booster Master Cylinder Braking Unit 1K2614105BC

£94.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8K0614517DP

Audi A4 B8 Brake Pump ABS ESP Module Hydraulic Control Braking Unit 8K0614517DP

£28.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8K0998281A

Audi A4 B8 8K Handbrake Actuator Electric Parking Brake Unit 8K0998281A

£32.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8K0612103K

Audi S5 8T Brake Servo Master Cylinder Vacuum Booster 8K0612103K

£23.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8V0615424A

Audi A3 S3 RS3 8V TT Red Brake Caliper Braking Unit Rear Right O/S 8V0615424A

£94.95

Free delivery: Aug 5 – 12

If paid before 14:00

Part no. 8K0615123B-1

Audi A5 8T Front Brake Caliper Housing Carrier Left N/S 320x30mm 8K0615123B

£28.95

Free delivery: Aug 04

If paid before 14:00

Part no. 6R0907379BR

Audi A1 8X VW Polo Seat Ibiza ABS Pump Braking Control Unit Module 6R0907379BA

£47.95

Free delivery: Aug 04

If paid before 14:00

Part no. 4M0927803C

Audi Q5 FY Front Wheel ABS Speed Sensor 4M0927803C

£13.95

Free delivery: Aug 04

If paid before 14:00

Part no. 4G0615123B

Audi A8 D4 4H Brake Caliper Front Left N/S Wheel Brake Unit 356X34MM 4H05BD

£123.95

Free delivery: Aug 04

If paid before 14:00

Part no. 4G0907379H

Audi A6 C7 ABS Pump Modulator Control Unit Module 4G0907379H

£89.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8W0615124

Audi A4 B9 Brake Caliper Front Wheel Brake Unit Housing Right O/S 8W0615124

£37.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8K0907379CG

Audi A4 B8 A5 8T Brake Pump ABS Module Hydraulic Control Braking 8K0907379CG

£28.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8W0615108F

Audi S4 B9 Brake Caliper Housing Right O/S 8W0615108F

£237.95

Free delivery: Aug 5 – 12

If paid before 14:00

Part no. 5Q0615601E

Audi S3 8Y Brake Disc Rear Left Right N/O/S 310X22 Set 5Q0615601E

£56.95

Free delivery: Aug 04

If paid before 14:00

Part no. RHD-5Q2614105AR

Audi A3 8V Brake Servo Booster Master Cylinder 5Q2614105AR

£23.95

Free delivery: Aug 04

If paid before 14:00

Part no. 4L0614517K

Audi Q7 4L ABS Brake Pump Hydraulic Unit Control Module 4L0614517K

£256.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8K0907379AE

Audi A5 8T ABS Pump Control Hydraulic Module Unit 8K0907379AE 8K0614517CD

£56.95

Free delivery: Aug 04

If paid before 14:00

Part no. 1K0907379AH

Audi A5 VW Golf Seat Leon ABS Pump Hydraulic Control Brake Unit 1K0907379AH

£94.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8K0612103N-1

Audi A5 8T 2.0 TDI CNHA Brake Servo 8K0612103N

£23.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8P0615123A

Audi S3 8P Front Brake Caliper Housing Carrier Left N/S 345x30mm 8P0615123A

£108.95

Free delivery: Aug 5 – 12

If paid before 14:00

Part no. 8J0614517D

Audi TT 8J ABS Pump Hydraulic Control Unit Brake Module Controller 8J0614517D

£94.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8K0615403D

Audi RS4 B8 Brake Caliper Rear Left N/S Wheel Braking Unit RS 8K0615403D

£75.95

Free delivery: Aug 04

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: Aug 04

If paid before 14:00

Part no. 8R0615107H

Audi A7 4G8 Brake Caliper Wheel Braking Unit Front Left N/S 8R0615107H

£189.95

Free delivery: Aug 04

If paid before 14:00

Part no. 5Q0907379AA

Audi A3 8V ABS Pump Modulator Hydraulic Control Brake Unit 5Q0907379AA

£32.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8V0615423A-1

Audi A3 S3 RS3 8V TT Red Brake Caliper Braking Unit Rear Left N/S 8V0615423A

£80.95

Free delivery: Aug 04

If paid before 14:00

Part no. RHD-4G2612103H

Brake Servo Audi A6 C7 A7 4G Booster Master Cylinder Unit 4G2612103H

£13.95

Free delivery: Aug 04

If paid before 14:00

Part no. 80A615108-1

Audi Q5 FY Brake Caliper Wheel Brake Unit Front Right O/S 80A615108

£142.95

Free delivery: Aug 5 – 12

If paid before 14:00

Part no. 8K0615123C

Audi A4 B8 Brake Caliper Front Left N/S Wheel Brake Unit Housing 8K0615123C

£32.95

Free delivery: Aug 04

If paid before 14:00

Part no. 5Q0614517CG

Audi A3 8V VW Golf MK7 ABS Pump Modulator Control Module Unit 5Q0614517CG

£18.95

Free delivery: Aug 04

If paid before 14:00

Part no. 5N0614109CF

Audi Q3 8U ABS Pump Wheel Braking Control Unit Module 5N0614109CF

£260.95

Free delivery: Aug 04

If paid before 14:00

Part no. 4F0910517AC

Audi A6 C6 ABS ESP Pump Hydraulic Block Control Unit 4F0910517AC 4F0614517T

£13.95

Free delivery: Aug 04

If paid before 14:00

Part no. 7L6615424L

Audi Q7 4L Brake Caliper Rear Right O/S Brake Unit 7L6615424L

£56.95

Free delivery: Aug 04

If paid before 14:00

Part no. 4B0615123

Audi A6 C6 FL Brake Caliper Front Left N/S Wheel Braking Unit 4B0615123

£23.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8K0907379CP

Audi A5 8T Brake Pump ABS Module Hydraulic Control Braking Unit 8K0907379CP

£32.95

Free delivery: Aug 04

If paid before 14:00

Part no. 6R0907379R

Audi A1 8X VW Polo 6R ABS Pump Braking Control Unit Module 6R0907379R

£32.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8V0614517E

Audi A3 8V Brake Pump ABS Module Hydraulic Control Braking Unit 8V0614517E

£75.95

Free delivery: Aug 04

If paid before 14:00

Part no. RHD-4G2612103G

Audi A6 C7 Brake Servo Master Cylinder 4G2612103G

£13.95

Free delivery: Aug 04

If paid before 14:00

Part no. 4H0907801G

Audi RS6 C7 Parking Brake Module Handbrake Actuator Control Unit 4H0907801G

£18.95

Free delivery: Aug 04

If paid before 14:00

Part no. 80A615108

Audi Q5 FY Front Brake Caliper Wheel Brake Unit Right O/S 80A615108

£146.95

Free delivery: Aug 04

If paid before 14:00

Part no. 4G0615404A-2

Audi A6 A7 4G8 Brake Caliper Unit Rear Right O/S 330X22mm 4G0615404A

£56.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8T0612103A

Audi RS4 B8 Brake Servo Booster Master Cylinder Module 8T0612103A

£37.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8V0615123B

Audi S3 8V Brake Caliper Front Left N/S Wheel Braking Unit 8V0615123B

£85.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8V0615423B

Audi S3 8V Brake Caliper Wheel Braking Unit Rear Left N/S 8V0615423B

£94.95

Free delivery: Aug 5 – 12

If paid before 14:00

Part no. 3Q0998281A

Audi A3 S3 8V Rear Electric Caliper Hand Brake Actuator Right O/S 5Q0615406FF

£32.95

Free delivery: Aug 04

If paid before 14:00

Part no. 6C0614517P

Audi A1 8X ABS Pump Hydraulic Modulator Brake Control Unit 6C0614517P 6C0907379P

£47.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8E0910517H

Audi A4 B7 Brake Pump ABS Module Hydraulic Control Braking Unit 8E0910517H014

£28.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8V0614517D

Audi A3 8V Brake Pump ABS Module Hydraulic Control Braking Unit 8V0614517D

£80.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8W0615107G

Audi S5 8T Front Caliper Brake Housing Left N/S 8W0615107G

£265.95

Free delivery: Aug 5 – 12

If paid before 14:00

Part no. 3Q0907379AA

Audi A3 8V 1.6 TDI DBKA ABS Pump Control Hydraulic Module Brake Unit 3Q0907379AA

£13.95

Free delivery: Aug 04

If paid before 14:00

Part no. RHD-7L8611932F

Audi Q7 4L Brake Servo Vacuum Pipe With Non Return Valve 3.0 TDI 7L8611932F

£23.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8K0907379BS

Audi A5 8T ABS Hydraulic Brake Pump Unit Braking Module 8K0907379BS

£56.95

Free delivery: Aug 04

If paid before 14:00

Part no. 3Q0998281

Audi Q2 GA Rear Electric Caliper Hand Brake Actuator Left N/S 3Q0998281

£18.95

Free delivery: Aug 04

If paid before 14:00

Part no. 1K0615423N

Audi A3 8P Rear Brake Caliper Wheel Brake Unit Left N/S 1K0615423N

£23.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8K0907379BP

Audi A5 8T Brake Pump ABS ESP Module Hydraulic Control Braking Unit 8K0907379BP

£23.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8V0615124

Brake Caliper Audi S3 8V VW Golf Mk7 Front Right O/S Carrier 8V0615124

£18.95

Free delivery: Aug 04

If paid before 14:00

Part no. 6N1611349B

Audi A4 S4 B7 Brake Fluid Reservoir Screw Filler Tank Cap 6N1611349B

£13.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8W0615403H

Audi A5 S5 Q5 Sportback S4 B9 Brake Caliper Rear Left N/S Braking 8W0615403H

£113.95

Free delivery: Aug 04

If paid before 14:00

Part no. 4H0614517R

Audi A8L D4 ABS Pump Module Brake Hydraulic Control Unit 4H0614517R 4H0907379T

£113.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8T0612107

Audi A8L 4H Brake Servo Booster Master Cylinder 8T0612107 4H0612103C

£37.95

Free delivery: Aug 04

If paid before 14:00

Part no. 7L6615423L

Audi Q7 4L Rear Brake Caliper Housing Carrier Left N/S 330x28mm 7L6615423L

£56.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8R0907379AP

Audi Q5 SQ5 8R Brake Pump ABS Module Hydraulic Control Braking Unit 8R0907379AP

£61.95

Free delivery: Aug 04

If paid before 14:00

Part no. 7L6615149-1

Audi Q7 4L Brake Caliper Housing Brembo Left N/S Brake Unit Caliper 7L6615149

£237.95

Free delivery: Aug 5 – 12

If paid before 14:00

Part no. 8K0615403E-1

Audi A5 8T Brake Caliper Rear Left N/S Wheel Brake Unit 8K0615403E

£42.95

Free delivery: Aug 04

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: Aug 04

If paid before 14:00

Part no. 8W0615107D

Audi A4 B9 Brake Caliper Front Left N/S Wheel Braking Unit 8W0615107D

£56.95

Free delivery: Aug 04

If paid before 14:00

Part no. WHT003860

Audi A3 8V Wheel ABS Speed Sensor Front Right O/S WHT003860

£13.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8R0612107B

Audi Q5 8R Brake Master Cylinder Servo 8R0612103D

£61.95

Free delivery: Aug 04

If paid before 14:00

Audi A3 8V ABS Pump Modulator Control Module Hydraulic Unit 5Q0614517CT

-2%

Part no. 5Q0614517CT

Audi A3 8V ABS Pump Modulator Control Module Hydraulic Unit 5Q0614517CT

Promo price

£28.95

£28.45

Free delivery: Aug 04

If paid before 14:00

Part no. 8R0907379BF

Audi Q5 SQ5 8R Brake Pump ABS Module Hydraulic Control Braking Unit 8R0907379BF

£104.95

Free delivery: Aug 04

If paid before 14:00

Part no. 7L8615423A

Audi Q7 4L Rear Brembo Brake Housing Left N/S Caliper 358x28mm 7L8615423A

£89.95

Free delivery: Aug 04

If paid before 14:00

Part no. 4F0614517AC

Audi A6 C6 ABS ESP Pump Hydraulic Block Control Unit 4F0614517AA 4F0910517AD

£42.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8K0907379AK

Audi A4 B8 Brake Pump ABS Module Hydraulic Control Braking Unit 8K0907379AK

£18.95

Free delivery: Aug 04

If paid before 14:00

Part no. 8W0615403

Audi A4 B9 Rear Brake Caliper Housing Brake Unit Left N/S 300X12 8W0615403

£51.95

Free delivery: Aug 04

If paid before 14:00

Part no. 80A615404A

Audi Q5 FY Brake Caliper Wheel Braking Unit Rear Right O/S 80A615404A

£61.95

Free delivery: Aug 04

If paid before 14:00

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Complete brake kits – comprehensive solution for your car

The best used brake parts – discs, pads and pumps with proven durability

Have you ever wondered how crucial the braking system is for your safety on the road? It is responsible for effectively stopping the vehicle in any situation, ensuring your confidence and control while driving. In the Global Parts automotive store, we offer a wide range of braking system parts, perfectly matched to brands such as BMW, Audi, Volkswagen, Mercedes, or Mini. Regardless of whether you need brake discs, pads, hoses, or calipers – you will find everything necessary here to keep your car running efficiently and safely. The braking system in a car can be divided into several main subsystems: hydraulic (master cylinders, hoses, calipers), disc-pad (brake discs and pads), and electronic braking support systems (ABS, ESP). Brake discs typically have a diameter ranging from 240 mm to 380 mm, and brake pads generate braking force depending on the contact surface and material (ceramic, semi-metallic, organic). High-quality braking system components can last up to 100,000 km under normal operating conditions.

How does the braking system work? Lighting category elements:

Braking system is one of the most important systems in every car. It consists of several key elements that work together to ensure effective braking:
Other ABS parts – Components supporting the operation of the ABS system, increasing braking efficiency.
Brake hoses, lines, and connectors – Responsible for transporting brake fluid between the master cylinder and the calipers.
Brake drums – Elements used in older braking systems, ensuring effective braking of the rear axle.
Brake master cylinders – Responsible for generating pressure in the braking system and ensuring effective brake operation.
Brake cables – Used in manual braking systems, ensuring wheel locking when the handbrake is engaged.
Brake shoes – Key elements of the drum braking system, pressed against the inner walls of the drum.
Complete brake kits – Full sets of components for braking system regeneration.
Brake pad wear sensor – Electronic components monitoring the condition of the pads and informing about the need for replacement.
Brake boosters and proportioning valves – Systems supporting the pressure force on the brake pedal, improving braking efficiency.
ABS and ESP system – Electronic systems ensuring vehicle stability and eliminating skidding during braking.
ABS control units – Modules controlling the operation of the ABS system, optimizing braking force on individual wheels.
ABS speed sensor – Responsible for monitoring wheel rotation speed and transmitting data to the ABS system.
Other brake sensors and switches – Elements monitoring the pressure and temperature of the braking system, ensuring its effective operation.
Brake fluid reservoirs and caps – Containers storing brake fluid and responsible for its proper circulation in the system.
Brake discs – Responsible for reducing vehicle speed through cooperation with brake pads.
Brake pads – Elements that directly contact the discs, generating friction and allowing the vehicle to stop.
Brake lines – Transfer brake fluid, which activates calipers and pistons.
Brake calipers – Allow pressing the pads against the discs, which is crucial for braking efficiency. A well-functioning braking system not only increases your safety but also protects other vehicle components from excessive wear.

Construction and purpose of the braking system and parts

Braking system and parts are a set of components mounted at the wheels, in the engine compartment, and in the hydraulic installation of the vehicle, whose task is to controlledly reduce speed and stop the car. A typical system includes discs or drums, pads or shoes, calipers, lines, a brake master cylinder, and elements supervising the system's operation. In practice, it is not only the type of part that counts, but also the OEM number, working diameter, mounting side, and compatibility with the equipment version.

Comparison of the most important braking system element groups

Part group	Basic function	What to check before purchase	Cooperating elements
Discs and drums	Absorb friction force and reduce wheel rotational speed	OEM number, diameter, thickness, solid or ventilated type, axle side	Pads, shoes, hub, disc shield
Calipers, pistons, and brackets	Press the friction element against the braking surface	Piston diameter, mounting type, left or right version, presence of carrier	Pads, flexible hoses, bleeder screw, sensors
Lines, cylinders, and reservoirs	Transfer brake fluid pressure and control braking force	Connection type, line length, ABS/ESP compatibility, mounting points	Calipers, master cylinder, booster, ABS module

Characteristics of calipers, lines, and cooperating elements

Brake caliper is an actuator that converts brake fluid pressure into pad pressure against the disc. Its construction includes a body, a piston or pistons, guide pins, seals, and a bleeder screw, and in some versions, also a parking brake mechanism. In the case of parts such as a BMW 15 caliper, you must compare the body marking, mounting side, carrier type, and compatibility with the disc and connection line.

Selecting parts by model, OEM number, and equipment version

The selection of brake parts should start with the OEM number and vehicle data, such as VIN, model year, body type, and engine version. This is especially important when one model was produced with several disc diameters, different calipers, or different ABS controls. In practice, it is also worth comparing the offer with the Suspension, steering system, Gearboxes and drives, and Automotive electrical systems departments, as associated faults can affect the car's behavior during braking.

Installation procedures and post-replacement inspection

Brake system bleeding is a service procedure consisting of removing air from the lines and calipers after replacing parts or fluid. Without proper bleeding, the brake pedal may feel soft, and braking force will be uneven between axles. For those comparing the operation of related systems, the following material may be useful: Steering system and power steering – how it works and what breaks?, which shows how to diagnose components responsible for vehicle handling.

Braking system compatibility and parameter table

Braking system element	Typical dimensions / parameters	Compatibility with models	Practical notes
Brake discs	Ø 240–380 mm, thickness 20–32 mm	BMW 3/5, Audi A4/A6, VW Passat	Ventilated or solid, depending on the model
Brake pads	Contact surface 80–120 cm²	Mercedes C/E, Mini Cooper	Ceramic or semi-metallic
Brake master cylinders	Operating pressure 70–100 bar	Audi A4, VW Golf	Compatible with ABS/ESP systems
Brake calipers	Piston diameter 35–60 mm	BMW 1/3/5, Mercedes C	Compatible with various disc types

Why is it worth investing in high-quality braking system parts?

Choosing the right braking system parts is crucial for safety and driving comfort. It is worth opting for components that offer:

Durability – Brake discs and pads made of high-quality materials are more resistant to overheating and wear.
Efficiency – Original parts ensure faster braking system response, which is crucial in emergency situations.
Longevity – Thanks to the use of proven technologies, braking system elements work reliably for a long time. In the Global Parts store, you will find original used car parts that have passed thorough quality checks and meet the highest safety standards.

Definitions and advantages of braking systems

Braking system consists of hydraulic and mechanical elements that together convert the pressure force on the pedal into braking force on the wheels. Thanks to the use of high-quality brake discs and pads, you can achieve:

Reduction of braking distance by up to 15–20% compared to lower-quality parts.
Reduced wear on other system elements, e.g., suspension or tires.
Compatibility with ABS/ESP systems, which increases safety during sudden braking.

How to choose the right braking system parts?

When deciding to purchase braking system parts, it is worth paying attention to several key aspects:

Matching the vehicle model – The braking system must be perfectly matched to the model. Every BMW, Audi, Volkswagen, Mercedes, or Mini has its own specifications. By choosing parts in the Global Parts automotive store, you can be sure that you will find elements perfectly matched to your car.
Technical condition – In the case of used car parts, it is crucial that they are fully functional and reliable.
Material type – For example, brake discs can be made of cast iron or composites, and brake pads of a ceramic or metallic mixture. The choice of the right material affects the performance and durability of the system.

Braking system installation and adjustment procedures

When replacing braking system parts, the following steps are important:

Verification of disc diameter and thickness and pad type.
Checking caliper compatibility with the ABS/ESP system.
Installation of brake lines and hoses according to the manufacturer's markings.
Bleeding the system after replacement to ensure optimal braking force.

Why is it worth choosing used braking system parts?

Used car parts are a solution that combines high quality with savings. Why is it worth considering them?

Lower costs – Used brake discs and pads often offer the same quality as new ones but at a significantly lower price.
Ecology – By choosing used car parts, you contribute to recycling and reduce the amount of waste in the environment.
Wide offer – At Global Parts, you will find everything you need – from brake lines to calipers.

How to take care of your vehicle's braking system?

Regular inspection and maintenance of the braking system is the key to safe driving. Here are a few tips:

Check the condition of the disc and brake pads at least once a year or at every tire change.
Regularly replace the brake fluid to avoid corrosion inside the lines.
Observe any disturbing signals, such as squeaking, vibrations, or extended braking time – these may indicate wear of system elements. If you notice any problems, do not delay replacing the parts. In the Global Parts store, you will find used auto parts that will help you quickly restore the full efficiency of the braking system.

FAQ

Question	Answer
What is the construction and purpose of the braking system and parts?	The braking system and parts are a set of elements responsible for reducing speed and stopping the vehicle. It includes, among others, discs, pads, calipers, lines, a brake master cylinder, and ABS control modules. Individual elements are located at the wheels, in the engine compartment, and in the car's hydraulic installation.
What are the braking system and parts used for?	The braking system and parts are used for controlled speed reduction and maintaining car stability during braking. Their task is to transfer force from the brake pedal to the wheels and convert motion energy into heat through friction. Without properly selected elements, the braking distance increases, and the operation of support systems may be limited.
What is the construction and function of a brake caliper?	A brake caliper is an element mounted at the hub and disc, whose task is to press the pads against the braking surface. A typical caliper consists of a body, a piston or pistons, guide pins, seals, and a bleeder screw. Depending on the version, it may work with a carrier, wear sensor, or parking brake mechanism.
How to select brake parts for a specific car?	It is safest to compare the OEM number, VIN, disc diameter, working thickness, mounting side, and caliper type. It is also worth checking if the car has ABS, ESP, an electric parking brake, or different axle variants in one model generation.
What symptoms indicate wear of braking system elements?	Typical symptoms include squeaking during braking, steering wheel vibrations, the car pulling to one side, a soft brake pedal, or an illuminated ABS warning light. Uneven caliper operation, fluid leaks, and disc overheating after a short drive may also indicate wear.
How does the installation and inspection proceed after replacing brake parts?	After installing the parts, you should check the mounting points, line routing, caliper freedom of movement, and brake fluid level. Then, the system is bled, checked for leaks, and a test drive is performed to assess braking uniformity and the operation of support systems.

Summary: braking system and parts in the Global Parts automotive store

Braking system is the foundation of every vehicle's safety. By taking care of regular replacement of discs, pads, lines, or calipers, you invest in confidence on the road. Global Parts offers elements matched to many versions of cars, including BMW, Audi, Volkswagen, Mercedes, Mini models, and others. Proper selection by OEM number, body version, mounting side, and equipment makes it easier to find the right component from the Braking system and parts category. We invite you to contact us – we are here to help you! For more information and interesting facts, we also invite you to our automotive blog.

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