TRW BMW Brake Master Cylinders for BMW 5 Series E34 (1987-1995)

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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 Master Cylinder - E34, Z3
TRW Brake Master Cylinder - E34, Z3
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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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 - E34 525i 535i M5, E32 735i/il
Brake Master Cylinder - E34 525i 535i M5, E32 735i/il
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
TRW - Corporate Logo
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
Free Shipping
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$ 169.62 USD
Free Shipping
Add to Wish List
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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