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ATE 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.

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Brake Master Cylinder - E32 735i 750il, E30 Upgrade
Brake Master Cylinder - E32 735i 750il, E30 Upgrade
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ATE - Corporate Logo
T#:15922
Part#: 34311156643
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$ 433.94 USD
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$ 433.94 USD
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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
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Brake Master Cylinder - E28 528e 535i M5, E24 633csi 635csi M6
Brake Master Cylinder - E28 528e 535i M5, E24 633csi 635csi M6 ...
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T#:8084
Part#: 34311155270
In Stock at Vendor
$ 417.94 USD
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$ 417.94 USD
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This is an OEM replacement brake master cylinder that fits many E28 5 series and E24 6 series. If your original BMW brake master cylinder has failed, this is the high quality replacement you need.

only for cars with ABS

This item fits the following BMWs:
1982-1988 E28 BMW 524td 528e 535i 535is M5
1983-1989 E24 BMW 633csi 635csi M6
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ATE Brake Master Cylinder - E46, Z4
ATE Brake Master Cylinder - E46, Z4
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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T#:374237
Part#: 34336785666
In Stock at Vendor
$ 313.44 USD
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$ 313.44 USD
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Direct replacement master cylinder
Brake Booster Servo Unit - E46 323i, 325i 328i, 330i
Brake Booster Servo Unit - E46 323i, 325i 328i, 330i
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ATE - Corporate Logo
T#:20886
Part#: 34336779682
In Stock at Vendor
$ 284.99

This product was last offered at the strikethrough price on
04-23-2026

$ 284.08 USD
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$ 284.08 USD
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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
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ATE Brake Booster - E36
ATE Brake Booster - E36
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T#:16441603
Part#: 34331162963
Back Ordered
$ 258.99 USD
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$ 258.99 USD
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Has your brake pedal become stiff and hard to depress, or goes right to the floor with no pressure or feel, most likely the brake booster unit has failed. Replace the brake booster right away to restore proper braking performance.
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Brake Vacuum Non-Return Check Valve
Brake Vacuum Non-Return Check Valve
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ATE - Corporate Logo
T#:389374
Part#: 34331151533A
In Stock at Vendor
$ 52.99

This product was last offered at the strikethrough price on
05-07-2026

$ 50.99 USD
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$ 50.99 USD
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Check valve used in the large vaccuum hose between the throttle body and brake booster. OEM Ate part. Replaces OE BMW #34331151532.
Brake Booster
Brake Booster
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T#:594506
Part#: 34336779681
In Stock at Vendor
$ 297.96 USD
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$ 297.96 USD
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ATE Brake Booster - E23, E24, E28
ATE Brake Booster - E23, E24, E28
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ATE - Corporate Logo
T#:587430
Part#: 34331156925
Ships in 1-2 days
$ 1,470.43 USD
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$ 1,470.43 USD
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Replacement Brake Booster
ATE Vacuum Pump - E82, E84, E90, E91, E92
ATE Vacuum Pump - E82, E84, E90, E91, E92
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ATE - Corporate Logo
T#:1195882
Part#: 34336779721
Ships in 1-2 days
$ 402.99

This product was last offered at the strikethrough price on
05-07-2026

$ 391.99 USD
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$ 391.99 USD
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Replace your failed brake booster to restore braking power
ATE Brake Master Cylinder - E10
ATE Brake Master Cylinder - E10
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T#:8079
Part#: 34311113656
Back Ordered
$ 119.99

This product was last offered at the strikethrough price on
05-07-2026

$ 116.99 USD
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$ 116.99 USD
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OEM BMW BRAKES BRAKE MASTER CYLINDER 34311113656.--

This item fits the following BMWs:
BMW 1600, 2002

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ATE Power Brake Booster - E36
ATE Power Brake Booster - E36
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T#:16441600
Part#: 34331162965
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$ 331.99 USD
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$ 331.99 USD
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Has your brake pedal become stiff and hard to depress, or goes right to the floor with no pressure or feel, most likely the brake booster unit has failed. Replace the brake booster right away to restore proper braking performance.
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ATE Master Cylinder Reservoir Grommet
ATE Master Cylinder Reservoir Grommet
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T#:375679
Part#: 34311160133
In Stock
$ 4.99

This product was last offered at the strikethrough price on
05-28-2026

$ 3.99 USD
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$ 3.99 USD
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Secures the reservoir to the master cylinder
ATE Check Valve Gasket - E46, E82, E88, E90, E91, E92, E93, Z3, Z4
ATE Check Valve Gasket - E46, E82, E88, E90, E91, E92, E93, Z3, Z4 ...
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ATE - Corporate Logo
T#:8105
Part#: 34336765316
In Stock
$ 3.99

This product was last offered at the strikethrough price on
05-07-2026

$ 2.99 USD
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$ 2.99 USD
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BMW BRAKES GASKET 34336765316
Grommet - Brake Master Cylinder To Reservoir (22 X 7.3 Mm)
Grommet - Brake Master Cylinder To Reservoir (22 X 7.3 Mm)
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T#:594654
Part#: 34311121911
In Stock
$ 6.72 USD
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$ 6.72 USD
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ATE Bleed Valve Screw for Dynamic Rear Sway Bar
ATE Bleed Valve Screw for Dynamic Rear Sway Bar
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T#:591036
Part#: 34116768018
Ships in 1 Business Day
$ 10.08 USD
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$ 10.08 USD
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Bleed Valve Screw for Dynamic Rear Sway Bar
Grommet - Brake Master Cylinder To Reservoir (17 X 6.5 Mm)
Grommet - Brake Master Cylinder To Reservoir (17 X 6.5 Mm)
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T#:640646
Part#: 34311103205
Ships in 1 Business Day
$ 9.99 USD
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$ 9.99 USD
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ATE O-Ring - E10, E12, E21, E24, E28, E3, E30, E9
ATE O-Ring - E10, E12, E21, E24, E28, E3, E30, E9
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T#:1196093
Part#: 34314650345
In Stock at Vendor
$ 4.99 USD
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$ 4.99 USD
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Seals the brake master cylinder to the power brake booster.
Brake Master Cylinder
Brake Master Cylinder
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T#:5309611
Part#: 34336786585
In Stock at Vendor
$ 229.99 USD
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$ 229.99 USD
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Brake Master Cylinder
Brake Master Cylinder
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T#:31158794
Part#: 34336785667
Ships in 1-2 days
$ 215.55 USD
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$ 215.55 USD
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MINI R50 R52 R53 Brake Master Cylinder
MINI R50 R52 R53 Brake Master Cylinder
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T#:27905127
Part#: 34336785668
Ships in 3 Business Days
$ 210.21 USD
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$ 210.21 USD
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MINI R50 R52 R53 Brake Master Cylinder ensures reliable and efficient braking performance for your MINI. Specifically designed for the R50, R52, and R53 models, this high-quality component offers a perfect fit and exceptional durability. Made with precision engineering, it enhances your vehicle's safety and braking response.

  • Perfect fit for MINI R50, R52, and R53 models
  • Enhances braking performance and safety
  • High-quality, durable construction
  • Reliable and efficient operation
  • Easy installation for hassle-free replacement

Upgrade your MINI's braking system with the MINI R50 R52 R53 Brake Master Cylinder, designed for superior performance and longevity.

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Brake Booster 300228
Brake Booster 300228
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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T#:27905126
Part#: 34336779679
Ships on Jun 25, 2026
$ 183.99 USD
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$ 183.99 USD
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ATE Brake Master Cylinder - E82/E88 128i
ATE Brake Master Cylinder - E82/E88 128i
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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T#:16441607
Part#: 34336779718
Special Order: No Guaranteed ETA
$ 174.99 USD
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$ 174.99 USD
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Make sure your pedal force is actually making it to the calipers, otherwise, you won't be able to stop. Stop quicker, better, and more reliably with new braking components.
OE ATE Power Brake Booster - E23
OE ATE Power Brake Booster - E23
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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T#:19697
Part#: 34331152825
Back Ordered
$ 1,511.99

This product was last offered at the strikethrough price on
05-07-2026

$ 1,468.99 USD
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$ 1,468.99 USD
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As you depress the brake pedal, your pedal linkage causes a shaft to move forward in response to your foot, and as this shaft moves forward, it interacts with the brake booster and master cylinder. The brake booster contains a diaphragm that separates its interior into two parts, with both in a partial vacuum. As the brake pedal is depressed, it causes a valve inside the booster to open, which in turn allows air into one side of the booster. This difference in pressure on one side helps to push the piston inside the brake master cylinder forward in response to the brake pedal, which in turn slows and stops your vehicle. If your brakes are feeling soft then it may be a good idea to replace your brake booster
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