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TRW 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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TRW Brake Booster - E60, E61, E63, E64

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T#:592494

Part#: 34336779742

In Stock

$ 327.99

This product was last offered at the strikethrough price on
07-01-2026

$ 244.65 USD

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$ 244.65 USD

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Make sure you car stops on a dime by replacing a faulty or leaky brake booster

TRW Brake Master Cylinder - E34, Z3

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T#:12758

Part#: 34311162915

In Stock at Vendor

$ 341.79

This product was last offered at the strikethrough price on
06-10-2026

$ 203.44 USD

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$ 203.44 USD

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BRAKE MASTER CYLINDER:343021

Brake Master Cylinder - E46 M3 2001-2002

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T#:15925

Part#: 34312282343

In Stock at Vendor

$ 168.99

This product was last offered at the strikethrough price on
04-30-2026

$ 159.99 USD

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$ 159.99 USD

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This is an OEM replacement brake master cylinder for the E46 M3.

This item fits the following BMWs:
2001-2002 E46 BMW M3, M3 cpnvertible

TRW Brake Booster - E53

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T#:374811

Part#: 34336760461

Ships in 1 day

$ 414.93 USD

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$ 414.93 USD

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Restore proper braking performance

Power Brake Booster

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T#:594031

Part#: 34326779736

In Stock at Vendor

$ 393.63 USD

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$ 393.63 USD

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Includes sealing o-ring and master cylinder to brake booster nuts.

Brake Master Cylinder

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T#:593986

Part#: 34336786586

Ships in 2 Business Days

$ 271.99

This product was last offered at the strikethrough price on
04-20-2026

$ 246.99 USD

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$ 246.99 USD

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Replacement Brake Master Cylinder from TRW

Brake Master Cylinder - E34 525i 535i M5, E32 735i/il

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T#:13585

Part#: 34331156978

In Stock at Vendor

$ 173.99

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

$ 169.62 USD

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$ 169.62 USD

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This is an OEM replacement brake master cylinder that fits many E32 and E34 models. If your original BMW brake master cylinder has failed, this is the high quality replacement you need. 3/1988-1992 E32 BMW 735i 735il
1989-1990 E34 BMW 525i
1989-1995 E34 BMW 535i M5

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Brake Master Cylinder - E53 X5 3.0i 4.4i 4.6is 4.8is

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T#:13581

Part#: 34316757743

Ships in 3 Business Days

$ 262.90 USD

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$ 262.90 USD

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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

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