Information - Master Cylinder

The brake master cylinder is a necessary part of the hydraulic brake. It is usually attached to the vacuum brake booster. And above the brake cylinder is located a translucent polyethylene tank with a regulator of level of brake fluid insufficiency. On the tank there are markups for minimal and maximal fluid levels. Depending on the design of the vehicle, the brake fluid reservoir can be mounted separately from the brake cylinders and attached to the body in the compartment under the car hood.

Brake master cylinder is required in order to convert the force applied to the brake pedal into extra brake fluid pressure for its subsequent transfer through the brake system. If you want to check out the functioning capacity of the master brake cylinder, look at the brake fluid level. The main brake cylinder determines the joint of the hydraulic drive circuits. The brake cylinder contains two pistons. At its bottom there are a few bolts that restrict their motion. Each valve is responsible for the pressure in a separate circuit. If, for some reason, one of the circuits does not work, the second loop still continues to function, thereby braking the car, though less efficient.

The most serious malfunction of the brake cylinder is considered the loss of impermeability. In this case, the brake cylinder starts leaking, and it's not difficult to see. The liquid flows over the body of the vacuum booster, and, consequently, its level in the tank decreases. And then it needs repair or even replacement of the brake cylinder. You can acquire it in our online store.

We offer the best prices and short delivery times for any kind of parts, including brake pads, drum brake and spoiler.

What is necessary to know about brake master cylinder replacement: lifetime limits, common defects and their signs, tips and recommendations

The brake master cylinder has no specific lifetime limit. Replacement of the unit is required at its inner surface damage, for example, at appearance of cracks on it. Mostly, these defects are the result of component wear.

Unit defectiveness is indicated by decreasing of brake pedal resistance and the situation doesn’t change after braking system bleeding. Also, leakage of braking fluid indicates the defect. Depressurization of the cylinder can be detected by appearance of oil leaks on the calipers, braking hoses, on the brake vacuum booster housing. Moreover, leakage can be suspected by lowering of braking fluid in the system.

Diagnostics starts from studying the dashboard readings: a special indicator signalizes about problems in the braking system. Then, you can visually inspect the cylinder housing. It is necessary to check it for appearance of braking liquid leaks. Special attention should be taken to spots of connection of pipes with circuit outlets. Also you should visually inspect the housing for presence of mechanical damages.

For more detailed diagnostics of cylinder condition you need to apply to specialists. It is also recommended to perform replacement of the unit at a service station.

Brake Master Cylinder at low cost: Top Spares

Brake Master Cylinder Berlingo MultiSpace for left-hand drive vehicles not for ABS (A.B.S., 51018X)
-12%
Brake Master Cylinder | A.B.S. 51018X Article №: 51018X
A.B.S. Brake Master Cylinder 51018X
£ 34,49
£ 30,35
incl. 20% VAT, Shipping
Over 100 items in stock
  • Diameter 1/ Diameter 2 [mm] 23,8
  • Brake System BOSCH
  • Number of connectors 4
  • Weight [kg] 1,14
  • Thread Size 1 M10x1
  • Number of mounting bores 2
  • Fitting Position Front
Details
Brake Master Cylinder Fully Automatic for vehicles without ABS for left-hand drive vehicles (JP GROUP, 1161101100)
-12%
Brake Master Cylinder | JP GROUP 1161101100 Article №: 1161101100
JP GROUP Brake Master Cylinder 1161101100
£ 37,99
£ 33,43
incl. 20% VAT, Shipping
Over 100 items in stock
  • Diameter [mm] 22.2
  • Number of connectors 4
Details
Brake Master Cylinder not for ambulances for left-hand drive vehicles (LPR, 1154)
-12%
Brake Master Cylinder | LPR 1154 Article №: 1154
LPR Brake Master Cylinder 1154
£ 52,49
£ 46,19
incl. 20% VAT, Shipping
Over 100 items in stock
  • Material Cast Iron
  • Bore Ø [mm] 20,64
  • Brake System ATE
  • Thread Size 10 x 1 (3)
  • for article number 1154
Details
Brake Master Cylinder CBBB for vehicles without ESP for left-hand drive vehicles (LPR, 1325)
-12%
Brake Master Cylinder | LPR 1325 Article №: 1325
LPR Brake Master Cylinder 1325
£ 40,99
£ 36,07
incl. 20% VAT, Shipping
Over 100 items in stock
  • Material Aluminium
  • Bore Ø [mm] 22,2
  • Brake System ATE
  • Thread Size 12 x 1 (2)
  • for article number 1325
  • Specification -Hall Sensor housing
Details
Brake Master Cylinder for left-hand drive vehicles (A.B.S., 1068)
-12%
Brake Master Cylinder | A.B.S. 1068 Article №: 1068
A.B.S. Brake Master Cylinder 1068
£ 25,99
£ 22,87
incl. 20% VAT, Shipping
Over 100 items in stock
  • Diameter 1/ Diameter 2 [mm] 22,2
  • Material Grey Cast Iron
  • Brake System BOSCH/BENDIX
  • Number of connectors 3
  • Weight [kg] 1,24
  • Thread Size 1 M10X1.0
  • Length 2 [mm] 18,8
  • Length 1 [mm] 167,0
  • Number of mounting bores 2
  • Fitting Position Front
Details
Brake Master Cylinder Automatic Transmission not for driving school cars for vehicles without ABS for left-hand drive vehicles for vehicles with brake booster (JP GROUP, 1161100100)
-12%
Brake Master Cylinder | JP GROUP 1161100100 Article №: 1161100100
JP GROUP Brake Master Cylinder 1161100100
£ 26,49
£ 23,31
incl. 20% VAT, Shipping
Over 100 items in stock
  • Diameter [mm] 20.64
  • Brake System ATE
  • Number of connectors 4
Details
Brake Master Cylinder WL Fully Automatic All-wheel Drive for vehicles without ABS for left-hand drive vehicles (LPR, 1834)
-12%
Brake Master Cylinder | LPR 1834 Article №: 1834
LPR Brake Master Cylinder 1834
£ 25,99
£ 22,87
incl. 20% VAT, Shipping
Over 100 items in stock
  • Material Cast Iron
  • Bore Ø [mm] 22,2
  • Brake System ATE
  • Thread Size 10 x 1 (4)
  • for article number 1834
Details
Brake Master Cylinder Automatic Transmission Front Wheel Drive for driving school cars for vehicles without ABS for right-hand drive vehicles for vehicles with brake booster (LPR, 1229)
-12%
Brake Master Cylinder | LPR 1229 Article №: 1229
LPR Brake Master Cylinder 1229
£ 30,99
£ 27,27
incl. 20% VAT, Shipping
Over 100 items in stock
  • Material Cast Iron
  • Bore Ø [mm] 19,05
  • Brake System Bendix
  • Thread Size 10 x 1 (4)
  • for article number 1229
Details
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