BMW Brake Master Cylinders for BMW 6 Series E64 (2004-2010)

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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
TRW Brake Booster - E60, E61, E63, E64
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
TRW - Corporate Logo
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
Brake Master Cylinder
Brake Master Cylinder
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
TRW - Corporate Logo
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
Free Shipping
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Replacement Brake Master Cylinder from TRW
Brake Booster Vacuum Pump - E53, E60, E63, E64, E65, E66, E70
Brake Booster Vacuum Pump - E53, E60, E63, E64, E65, E66, E70 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bremmen Parts - Corporate Logo
T#:22558979
Part#: 11667635657
In Stock
Sale - Save 15% $ 112.99

This product was last offered at the strikethrough price on
05-03-2026

$ 96.04 USD
Free Shipping on orders $49 and up
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Sale - Save 15%
$ 112.99

This product was last offered at the strikethrough price on
05-03-2026

$ 96.04 USD
Free Shipping on orders $49 and up
Add to Wish List
Found at the front of the cylinder head, this auxiliary pump sends vacuum to the brake booster to provide assistance to your braking system. A failure could lead to harder pedal feel and increased travel, as well as a vacuum leak.
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