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BMW Brake Master Cylinders for BMW 3 Series E30 (1984-1991)

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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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Cohline Brake Booster Vacuum Hose - E10, E12, E21, E24, E28, E3, E30,...

T#:8095

Part#: 34331115926

In Stock at Vendor

$ 24.34

This product was last offered at the strikethrough price on
07-15-2026

$ 22.18 USD

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$ 22.18 USD

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BMW BRAKES VACUUM HOSE 34331115926

Genuine BMW Brake Booster Vacuum Hose - E32 E10 E39 E24 E28 E3 E30 E1...

T#:368303

Part#: 34331115926

Ships in 1-2 days

2% off MSRP $ 41.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 40.99 USD

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2% off MSRP

$ 41.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 40.99 USD

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URO Brake Master Cylinder Hose - BMW

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:18003807

Part#: 35006857512

In Stock

$ 24.99 USD

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$ 24.99 USD

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URO Brake Master Cylinder Hose - BMW

The URO Brake Master Cylinder Hose - BMW is engineered for optimal fitment and performance in your BMW’s brake system. The brake master cylinder reservoir hose plays a crucial role in ensuring proper fluid flow, and URO Parts' precise manufacturing ensures a secure and reliable connection. This hose is designed to withstand the demanding conditions of your brake system, ensuring longevity and safety.

Manufactured to OE dimensions for precise fitment and secure sealing
High-quality hose material resistant to glycol-based brake fluid corrosion
Ensures long-term reliability and performance under high-pressure conditions
Perfect for restoring the integrity of your brake system when replacing worn-out hoses
Easy to install, providing a hassle-free replacement experience

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Genuine BMW Brake Master Cylinder Cap - E30 325is 325e 325es ...

For vehicles with production date up to 09/1987

T#:19738

Part#: 34321156029

Ships in 1-2 days

2% off MSRP $ 61.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 60.99 USD

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2% off MSRP

$ 61.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 60.99 USD

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Genuine BMW Cap With Warning Switch -
This item fits the following BMW Chassis:
E30

Brake Check Valve - E30 325i 325is 325ix, E34 525i

T#:8101

Part#: 34331158113

Ships in 2 Business Days

3% off MSRP $ 114.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 111.99 USD

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3% off MSRP

$ 114.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 111.99 USD

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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

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Genuine BMW Air Pump

T#:25094

Part#: 11611284269

In Stock

Sale - Save 8% $ 55.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 51.59 USD

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Sale - Save 8%

$ 55.99

This product was last offered at the strikethrough price on
06-15-2026

$ 51.59 USD

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Genuine BMW Air Pump -
This item fits the following BMW Chassis:
E30,E34,E38,E39

Fits BMW Engines including:
M20,M62

Genuine BMW Master Cylinder Clevis

T#:64474

Part#: 35211154097

Ships in 2 Business Days

$ 32.99 USD

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$ 32.99 USD

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Genuine BMW Forkhead - L=44mm
This item fits the following BMW Chassis:
E30 M3,E30

Cable Socket Female - E24, E3, E30, E31, E32, E34, E39

B=6,5/L=19,5

T#:139848

Part#: 61131376460

In Stock

Sale - Save 36% $ 1.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 1.28 USD

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Qty

Sale - Save 36%

$ 1.99

This product was last offered at the strikethrough price on
05-02-2026

$ 1.28 USD

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Genuine BMW Cable Socket Female - B=6,5/L=19,5
This item fits the following BMW Chassis:
E30 M3,E34 M5,E39 M5,E30,E34,E39

Gasket Ring

A10X13,5-Al

T#:6483

Part#: 07119963073

In Stock

Sale - Save 50% $ 1.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 0.99 USD

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Qty

Sale - Save 50%

$ 1.99

This product was last offered at the strikethrough price on
05-14-2026

$ 0.99 USD

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Genuine BMW Gasket Ring
This item fits the following BMW Chassis:
E30 M3,E34 M5,E60 M5,E63 M6,E30,E34,E39,E46,E53 X5 X5,E63,E83 X3,E85 Z4

ATE Master Cylinder Reservoir Grommet

T#:375679

Part#: 34311160133

In Stock

$ 4.99

This product was last offered at the strikethrough price on
07-14-2026

$ 3.99 USD

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$ 3.99 USD

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Secures the reservoir to the master cylinder

ATE O-Ring - E10, E12, E21, E24, E28, E3, E30, E9

T#:1196093

Part#: 34314650345

In Stock at Vendor

$ 4.99 USD

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Qty

$ 4.99 USD

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Seals the brake master cylinder to the power brake booster.

Race German 24V Swap E30 Brake Booster Relocation Template

T#:7703237

Part#: RGE30BBRT24V

Ships in 1 Business Day

$ 17.99 USD

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$ 17.99 USD

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Race German has devoted themselves to providing quality products for late model BMWs that cover both street and track applications. Race German has now grown their catalog to a wide variety of models and products geared towards keeping your car looking and running nice. When you perform a 24V engine swap in your E30, you will need to move the brake booster over 1/2" so the intake manifold will not interfere with the the brake booster. Race German's 24v brake booster template takes all the guess work out for you. This template lines up with the existing brake booster holes, and gives you the exact position to drill the new holes. This little template can save you time and headaches.

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URO Booster Gasket

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:37757286

Part#: 34331158929

In Stock

$ 7.99 USD

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$ 7.99 USD

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This rubber gasket seals the vacuum line to the brake servo unit.

Gasket - E30, E32, E34, E38, E39, E52, Z3

T#:62685

Part#: 34321157396

Ships in 3 Business Days

$ 8.99 USD

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$ 8.99 USD

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Genuine BMW Gasket
This item fits the following BMW Chassis:
E34 M5,E30,E34,E38,E39

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