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BMW Brake Master Cylinders

The brake master cylinder is responsible for distributing fluid from the reservoir to the front and rear brake systems. The fluid reservoir actually sits on top of the master cylinder with hard metal brake lines running out of it. There are a few places where the master cylinder can leak and cause a spongy or soft brake pedal. The inside has several pistons with o-rings and seals that can fail and allow brake fluid to escape. Likewise, the external metal lines also have o-rings where fluid can seep out or let air/moisture in.

Brake Master Cylinder - E38 E39 X5 with DSC
Brake Master Cylinder - E38 E39 X5 with DSC
This is an OEM replacement brake master cylinder for E38,...
TRW - Corporate Logo
T#:13579
Part#: 34311165544
In Stock
$107.98
Free Shipping
This is an OEM replacement brake master cylinder for E38, E39 and E53 X5 with DSC.

This item fits the following BMWs:
2000 E39 BMW 528i
1999-2003 E39 BMW 525i 530i 540i M5
1999-2001 E38 BMW 740i 740il 750il
2000-2001 E53 BMW X5 3.0i X5 4.4i
Genuine BMW Vacuum Pump - 34336769029 -E60 M5,E63 M6
Genuine BMW Vacuum Pump - 34336769029 -E60 M5,E63 M6
Genuine BMW Vacuum PumpThis item fits the following BMW C...
Genuine BMW - Corporate Logo
T#:20610
Part#: 34336769029
In Stock
12% off MSRP $606.45
$535.01
Free Shipping
12% off MSRP $606.45
$535.01
Free Shipping


Genuine BMW Vacuum Pump
This item fits the following BMW Chassis:
E60 M5,E63 M6,E63

Brake Master Cylinder  - E32 735i 750il, E30 Upgrade
Brake Master Cylinder - E32 735i 750il, E30 Upgrade
This is the OEM brake master cylinder for E32 750il made ...
ATE - Corporate Logo
T#:15922
Part#: 34311156643
In Stock
$202.95
$202.95
This is the OEM brake master cylinder for E32 750il made by ATE. This master cylinder can be used as an upgrade for E30 models (in conjunction with brake line #34326755585).

This item fits the following BMWs:
1987-3/1988 E32 BMW 735i 735il
1988-1994 E32 BMW 750il

Brake Master Cylinder Upgrade
1984-1991 E30 BMW 325e 325es 325i 325ic 325is M3

Centric Brake Master Cylinder - E36 M3
Centric Brake Master Cylinder - E36 M3
If your brake pedal gives you inconsistent braking feel, ...
Centric - Corporate Logo
T#:557383
Part#: 13034104
In Stock
New Item
$250.00
$250.00

If your brake pedal gives you inconsistent braking feel, and is still soft after ensuring there is no air in the brake lines, your master cylinder has most likely failed.

This Centric replacement is perfect to restore proper braking function, giving you a tight, even pedal feel.

This part does not include the seal or hardware.

Replace your seal and hardware for easier installation and guaranteed reliability.


Brake Master Cylinder - E36 (non-M) and Z3
Brake Master Cylinder - E36 (non-M) and Z3
This is an OEM replacement brake master cylinder for E36 ...
ATE - Corporate Logo
T#:1290
Part#: 34311163711
In Stock
$194.95
$149.22
Limited Qty Sale
Free Shipping
$194.95
$149.22
Limited Qty Sale
Free Shipping
This is an OEM replacement brake master cylinder for E36 non-M 3 series 1995 and newer. It fits 1995-1999 318i & 318is; 1995 325i & 325is; 1995-1998 328i; 1995-1999 328is & 323is; and all Z3 roadster and coupes (non-M) including 1.9, 2.3, 2.5, 2.8 and 3.0 models.
Brake Vacuum Pump - E90 E92 E60 E70
Brake Vacuum Pump - E90 E92 E60 E70
This is the OEM Peirberg Power brake booster vacuum pump ...
Pierburg - Corporate Logo
T#:14640
Part#: 11667558344
Direct Ship
$461.95
$461.95
This is the OEM Peirberg Power brake booster vacuum pump for BMW's with the N51 or N52 6 cylinder engines.

This item fits the following BMWs:
2008-2013 E82 BMW 128i Coupe
2006-2011 E90 BMW 328i 328xi 328i xDrive - Sedan
2006-2012 E91 BMW 328i 328xi 328i xDrive - Wagon
2007-2013 E92 BMW 328i 328xi 328i xDrive - Coupe
2007-2013 E93 BMW 328i - Convertible
2004-2010 E60 BMW 528i 528xi 528i xDrive
2011 F10 BMW 528i 528i xDrive
2008-2010 E83 BMW X3 3.0si
2011+ F25 BMW X3 xDrive28i
2007-2013 E70 BMW X5 3.0si X5 xDrive30i
2009+ Z4 BMW Z4 sDrive30i

Brake Booster Servo Unit - E46 323i, 325i 328i, 330i
Brake Booster Servo Unit - E46 323i, 325i 328i, 330i
This ATE Brand brake booster is a direct replacement for ...
ATE - Corporate Logo
T#:20886
Part#: 34336779682
Direct Ship
$157.95
$157.95
This ATE Brand brake booster is a direct replacement for the factory BMW vacuum assited brake booster servo unit on E46 3 series models.

This item fits the following BMWs:
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
Chase Bays Brake Booster Eliminator - E36, Z3, E46
Chase Bays Brake Booster Eliminator - E36, Z3, E46
Gain more constant braking feel and modulation by elimina...
Chase Bays - Corporate Logo
T#:400070
Part#: CB-U-E346BBE
Direct Ship
$199.99
$199.99

Gain more constant braking feel and modulation by eliminating your brake booster. With this kit your brakes will function like factory below threshold braking, but above threshold braking, while requiring more effort, this give you better modulation of the brakes giving you total control and the right amount of braking for what you need.

*Please note this kit will not work with factory lines and requires one of brake line relocation kit below*

E36/Z3's Up to model year 1994 CB-BMW-E36BBE-92aEUR<

E36/Z3's From model year 1995 CB-BMW-E36BBE

E46 CB-BMW-E46BBE


Chase Bays Brake Booster Eliminator - E30 E28 E24 E21
Chase Bays Brake Booster Eliminator - E30 E28 E24 E21
Gain more constant braking feel and modulation by elimina...
Chase Bays - Corporate Logo
T#:400150
Part#: CB-EURO-BBE
Direct Ship
$199.99
$199.99

Gain more constant braking feel and modulation by eliminating your brake booster. With this kit your brakes will function like factory below threshold braking, but above threshold braking, while requiring more effort, this give you better modulation of the brakes giving you total control and the right amount of braking for what you need.

*Please note this kit will not work with factory lines and requires one of brake line relocation kits also*


Brake Master Cylinder Upgrade - E30 325e, 325i, M3
Brake Master Cylinder Upgrade - E30 325e, 325i, M3
This is the 25mm master cylinder upgrade for E30 3 series...
Turner Motorsport - Corporate Logo
T#:14298
Part#: TMS14298
Ships in 1 day
$226.90
Free Shipping
This is the 25mm master cylinder upgrade for E30 3 series. It features the larger master cylinder from the E32 750il (#34311156643) with the new required brake line (#34326755585). This set up is used on many track driven E30's to allow for extra stopping power.

This item fits the following BMWs:
1984-1991 E30 BMW 325e 325es 325i 325ic 325is M3
Brake Check Valve - E30 325i 325is 325ix, E34 525i
Brake Check Valve - E30 325i 325is 325ix, E34 525i
This is the Genuine BMW brake vacuum check valve for E30 ...
Genuine BMW - Corporate Logo
T#:8101
Part#: 34331158113
Ships in 1 day
15% off MSRP $86.43
$73.85
Free Shipping on orders $99 and up
15% off MSRP $86.43
$73.85
Free Shipping on orders $99 and up
This is the Genuine BMW brake vacuum check valve for E30 325i and E34 525i with M20 engine/ This check valve is mounted on the vacuum line that goes to the brake booster from the throttle body.

This item fits the following BMWs:
1984-1991 E30 BMW 325i 325ic 325is 325ix
1989-1990 E34 BMW 525i
ASC / ABS Brake Pedal Travel Sensor - E36
ASC / ABS Brake Pedal Travel Sensor - E36
This Genuine BMW E36 brake pedal travel sensor. This sens...
Genuine BMW - Corporate Logo
T#:13586
Part#: 34331182594
Ships in 1 day
12% off MSRP $177.70
$155.56
Free Shipping
12% off MSRP $177.70
$155.56
Free Shipping
This Genuine BMW E36 brake pedal travel sensor. This sensor supplies a signal to the ABS / ASC (traction control) unit for brake pedal travel. If this fails it will often activate the ABS and ASC dashboard warning light. It is mounted into vacuum assisted the brake booster.

This item fits the following BMWs:
1992-1996 E36 BMW 318i 318is 318ic 325i 325is 325ic 328i 328is 328ic
1995-1999 E36 BMW M3


Genuine BMW Expansion Tank Ate - 34321156578
Genuine BMW Expansion Tank Ate - 34321156578
Genuine BMW Expansion Tank - Ate
Genuine BMW - Corporate Logo
T#:62679
Part#: 34321156578
Ships in 1 day
11% off MSRP $122.81
$108.76
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11% off MSRP $122.81
$108.76
Free Shipping


Genuine BMW Expansion Tank - Ate

E36 Brake Master Cylinder - E36 318/325 up to 9/94 (no ASC) & 328i with ASC
E36 Brake Master Cylinder - E36 318/325 up to 9/94 (no ASC) & 32...
This is an OEM replacement brake master cylinder that fit...
FTE - Corporate Logo
T#:2035
Part#: 34311161937
Ships in 1 day
$279.95
Free Shipping
This is an OEM replacement brake master cylinder that fits many E36 3 series. If your original BMW brake master cylinder has failed, this is the high quality replacement you need.

This brake master cylinder fits the following BMWs:
1992-1994 E36 3 Series 318i, 318is, 325i, 325is (W/O ASC)
1996 E36 3 Series 328i, 328is, 328ic WITH ASC
Brake Master Cylinder - E53 X5 3.0i 4.4i 4.6is 4.8is
Brake Master Cylinder - E53 X5 3.0i 4.4i 4.6is 4.8is
This is an OEM replacement brake master cylinder that fit...
TRW - Corporate Logo
T#:13581
Part#: 34316757743
Ships in 1 day
$214.95
Free Shipping
This is an OEM replacement brake master cylinder that fits many E53 X5 models. If your original BMW brake master cylinder has failed, this is the high quality replacement you need.

This item fits the following BMWs:
2002-2006 E53 BMW X5 3.0i X5 4.4i X5 4.6is X5 4.8is

Brake Vacuum Non-Return Check Valve
Brake Vacuum Non-Return Check Valve
Check valve used in the large vaccuum hose between the th...
ATE - Corporate Logo
T#:389374
Part#: 34331151533A
Ships in 1 day
$8.05
Free Shipping on orders $99 and up
Check valve used in the large vaccuum hose between the throttle body and brake booster. OEM Ate part. Replaces OE BMW #34331151532.

Brake Pressure Regulator - E30
Brake Pressure Regulator - E30
This Genuine BMW brake pressure regulator helps control t...
Genuine BMW - Corporate Logo
T#:19698
Part#: 34331152494
Ships in 1 day
13% off MSRP $142.18
$124.31
Free Shipping
13% off MSRP $142.18
$124.31
Free Shipping
This Genuine BMW brake pressure regulator helps control the front to rear brake balance on E30 3 series. It is mounted near the brake master cylinder.

This item fits the following BMWs:
1984-1991 E30 BMW 318i 318is 318ic 325e 325es 325i 325ic 325is 325ix M3
Genuine BMW Brake Master Cylinder - E36 M3
Genuine BMW Brake Master Cylinder - E36 M3
If your brake pedal gives you inconsistent braking feel, ...
Genuine BMW - Corporate Logo
T#:368296
Part#: 34312227466
Ships in 1 day
12% off MSRP $767.20
$673.84
Free Shipping
12% off MSRP $767.20
$673.84
Free Shipping

If your brake pedal gives you inconsistent braking feel, and is still soft after ensuring there is no air in the brake lines, your master cylinder has most likely failed.

This Genuine BMW replacement is perfect to restore proper braking function, giving you a tight, ev