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BMW Brake Master Cylinders for BMW 3 Series E46 (1999-2005)

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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Genuine BMW Master Cylinder Cap - E82/88 E9X

For coupe models with production date from 09/2001 For coupe models with production date from 09/2002

T#:63465

Part#: 34336774451

Ships in 3 Business Days

3% off MSRP $ 37.99

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

$ 36.99 USD

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3% off MSRP

$ 37.99

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

$ 36.99 USD

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Genuine BMW Cap With Warning Switch
This item fits the following BMW Chassis:
E82 1M Coupe,E82,E90,E92,E93

Genuine BMW Brake Booster Vacuum Hose - E46 325i 325Ci 325xi 330xi 33...

T#:12532

Part#: 34336751108

In Stock

Sale - Save 9% $ 69.99

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

$ 63.95 USD

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Sale - Save 9%

$ 69.99

This product was last offered at the strikethrough price on
08-26-2026

$ 63.95 USD

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Genuine BMW Hose Elbow -
This item fits the following BMW Chassis:
E46

Genuine BMW Brake booster - E46 M3

For vehicles with production date up to 09/2002

T#:63410

Part#: 34332282193

Ships in 3 Business Days

3% off MSRP $ 699.99

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

$ 677.99 USD

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3% off MSRP

$ 699.99

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

$ 677.99 USD

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Genuine BMW Brake Servo Unit
This item fits the following BMW Chassis:
E46 M3,E46

Brake Master Cylinder - E46 M3 2003-2006, Z4m

T#:15932

Part#: 34317838638

Ships in 6 Business Days

8% off MSRP $ 967.99

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

$ 888.99 USD

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8% off MSRP

$ 967.99

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

$ 888.99 USD

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This is an OEM replacement brake master cylinder for the E46 M3 and E85, E86 Z4M.

This item fits the following BMWs:
2003-2006 E46 BMW M3, M3 Convertible
1/2006-2008 E85 BMW Z4 M Roadster M Coupe

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Brake Booster - E46

For vehicles with production date from 09/2002

T#:13587

Part#: 34332282622

Special Order: No Guaranteed ETA

3% off MSRP $ 699.99

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

$ 677.99 USD

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Qty

3% off MSRP

$ 699.99

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

$ 677.99 USD

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Genuine BMW Brake Servo Unit
This item fits the following BMW Chassis:
E46 M3,E46

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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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

Strainer Tube - E46

T#:62921

Part#: 34326752749

Ships in 6 Business Days

$ 7.99 USD

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$ 7.99 USD

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Genuine BMW Strainer Tube -
This item fits the following BMW Chassis:
E46

Brake Booster - E46 3-Series

T#:25142292

Part#: 34336779682

Back Ordered

$ 292.99 USD

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$ 292.99 USD

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The brake booster in a car is essential for improving the efficiency of the braking system by amplifying the force exerted on the brake pedal. As time passes, the brake booster may undergo wear and tear, resulting in problems like reduced braking power, a soft or spongy brake pedal sensation, and potential brake fluid leaks. These issues pose a threat to the overall safety and performance of the vehicle. Consequently, replacing a worn or malfunctioning brake booster is crucial to maintaining optimal braking performance and ensuring the safety of the vehicle.

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BMW Brake Master Cylinders for BMW 3 Series E46 (1999-2005)

Sub-Categories

Genuine BMW Master Cylinder Cap - E82/88 E9X

Genuine BMW Brake Booster Vacuum Hose - E46 325i 325Ci 325xi 330xi 33...

Genuine BMW Brake booster - E46 M3

Brake Master Cylinder - E46 M3 2003-2006, Z4m

Brake Booster - E46

Gasket Ring

Strainer Tube - E46

Brake Booster - E46 3-Series

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