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

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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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Genuine BMW Brake Master Cylinder Reservoir
For vehicles with production date up to 09/2001 For vehicles with production date up to 09/2002
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:23056
Part#: 34326751589
In Stock
5% off MSRP $ 132.99

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

$ 125.99 USD
Free Shipping
5% off MSRP
$ 132.99

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

$ 125.99 USD
Free Shipping


Genuine BMW Expansion Tank With Warning Switch
This item fits the following BMW Chassis:
E46 M3,E85 Z4M,E46,E85 Z4,E86 Z4,E89 Z4

Genuine BMW Brake Booster Vacuum Hose - E46 325i 325Ci 325xi 330xi 33...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:12532
Part#: 34336751108
Ships in 3 Business Days
3% off MSRP $ 70.99

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

$ 68.99 USD
Free Shipping on orders $49 and up
3% off MSRP
$ 70.99

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

$ 68.99 USD
Free Shipping on orders $49 and up


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

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
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:63465
Part#: 34336774451
Ships in 3 Business Days
5% 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.

$ 35.99 USD
Free Shipping on orders $49 and up
5% 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.

$ 35.99 USD
Free Shipping on orders $49 and up


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


URO Brake Master Cylinder Hose - BMW
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:18003807
Part#: 35006857512
In Stock
$ 24.99 USD
Free Shipping on orders $49 and up

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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Brake Booster Servo Unit - E46 323i, 325i 328i, 330i
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ATE - Corporate Logo
T#:20886
Part#: 34336779682
In Stock at Vendor
$ 329.10 USD
Free Shipping
$ 329.10 USD
Free Shipping
This ATE Brand brake booster is a direct replacement for the factory BMW vacuum assited brake booster servo unit on E46 3 series models.

This item fits the following BMWs:
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
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Brake Master Cylinder - E46 M3 2001-2002
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
TRW - Corporate Logo
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
Free Shipping
$ 159.99 USD
Free Shipping
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

ATE Brake Master Cylinder - E46, Z4
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ATE - Corporate Logo
T#:374237
Part#: 34336785666
In Stock at Vendor
$ 313.44

This product was last offered at the strikethrough price on
06-18-2026

$ 312.12 USD
Free Shipping
$ 312.12 USD
Free Shipping
Direct replacement master cylinder
Genuine BMW Brake booster - E46 M3
For vehicles with production date up to 09/2002
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:63410
Part#: 34332282193
Ships on Jul 28, 2026
4% 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.

$ 673.99 USD
Free Shipping on orders $49 and up
4% 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.

$ 673.99 USD
Free Shipping on orders $49 and up


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


URO Brake Booster Vacuum Hose - 34336751108
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:28171570
Part#: 34336751108
In Stock
$ 50.99 USD
Free Shipping on orders $49 and up

Genuine BMW Vacuum Pump - E46 M3
For vehicles with a production date from 09/2002
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:36645
Part#: 11617836745
Ships in 3 Business Days
4% off MSRP $ 236.99

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

$ 227.99 USD
Free Shipping
4% off MSRP
$ 236.99

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

$ 227.99 USD
Free Shipping


Genuine BMW Sucking Jet Pump With Lines
This item fits the following BMW Chassis:
E46 M3,E46

Fits BMW Engines including:
S54

Genuine BMW Power Brake Booster
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:368306
Part#: 34336779682
Ships in 6 Business Days
4% 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.

$ 673.99 USD
Free Shipping
4% 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.

$ 673.99 USD
Free Shipping
Brake Master Cylinder - E46 M3 2003-2006, Z4m
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:15932
Part#: 34317838638
Ships in 6 Business Days
9% 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.

$ 876.99 USD
Free Shipping on orders $49 and up
9% 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.

$ 876.99 USD
Free Shipping on orders $49 and up
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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Genuine BMW Vacuum Pump - E46 M3
For vehicles with a production date up to 09/2002
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:36618
Part#: 11617831663
Ships in 6 Business Days
4% off MSRP $ 155.99

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

$ 149.99 USD
Free Shipping
4% off MSRP
$ 155.99

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

$ 149.99 USD
Free Shipping


Genuine BMW Sucking Jet Pump With Lines
This item fits the following BMW Chassis:
E46 M3,E46

Fits BMW Engines including:
S54

Genuine BMW Brake Booster Vacuum Valve (Sucking Jet Pump) - Intake Ma...
Includes hoses to air intake boot and intake manifold.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:36479
Part#: 11617515362
Ships in 5 Business Days
4% off MSRP $ 155.99

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

$ 149.99 USD
Free Shipping
4% off MSRP
$ 155.99

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

$ 149.99 USD
Free Shipping


Genuine BMW Sucking Jet Pump With Lines -
This item fits the following BMW Chassis:
E46

Fits BMW Engines including:
M56

Genuine BMW Brake Master Cylinder
For vehicles with production date from 02/2001 For vehicles with production date from 09/2000
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:15935
Part#: 34336785666
Ships in 9 Business Days
9% off MSRP $ 877.99

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

$ 794.99 USD
Free Shipping
9% off MSRP
$ 877.99

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

$ 794.99 USD
Free Shipping


Genuine BMW Brake Master Cylinder -
This item fits the following BMW Chassis:
E46,E85,E86


Brake Booster - E46
For vehicles with production date from 09/2002
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:13587
Part#: 34332282622
Special Order: No Guaranteed ETA
4% 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.

$ 673.99 USD
Free Shipping on orders $49 and up
4% 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.

$ 673.99 USD
Free Shipping on orders $49 and up


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


Gasket Ring
A10X13,5-Al
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
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
Free Shipping on orders $49 and up
Sale - Save 50%
$ 1.99

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

$ 0.99 USD
Free Shipping on orders $49 and up


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
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ATE - Corporate Logo
T#:375679
Part#: 34311160133
In Stock at Vendor
$ 4.99 USD
Free Shipping on orders $49 and up
Secures the reservoir to the master cylinder

Strainer Tube - E46
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:62921
Part#: 34326752749
Ships in 3 Business Days
$ 7.99 USD
Free Shipping on orders $49 and up


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

ATE Check Valve Gasket - E46, E82, E88, E90, E91, E92, E93, Z3, Z4 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ATE - Corporate Logo
T#:8105
Part#: 34336765316
In Stock
$ 3.99

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

$ 2.99 USD
Free Shipping on orders $49 and up
$ 2.99 USD
Free Shipping on orders $49 and up
BMW BRAKES GASKET 34336765316

Brake Master Cylinder
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:368297
Part#: 34312282343
Special Order: No Guaranteed ETA
9% off MSRP $ 674.99

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

$ 610.99 USD
Free Shipping
9% off MSRP
$ 674.99

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

$ 610.99 USD
Free Shipping

Enhance Braking Performance with ECS Tuning's Premium Brake Parts

Experience optimal braking efficiency with ECS Tuning's extensive inventory of premium brake parts. Our range includes pads, rotors, shoes, drums, hardware, hoses, lines, fluids, and hi-temp lubricants, catering to all your brake servicing needs.

The brake master cylinder is a pivotal component that converts foot pressure into hydraulic force, transmitting it to the brake calipers and wheel cylinders. Internal leaks within the brake master cylinder can lead to reduced hydraulic pressure at the wheels, potentially causing partial or complete loss of braking.

Trust ECS Tuning to provide the necessary components for professional brake servicing, ensuring your vehicle's braking system operates at its best.

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Brake Booster - E46 3-Series
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
TRW - Corporate Logo
T#:25142292
Part#: 34336779682
Back Ordered
$ 292.99 USD
Free Shipping on orders $49 and up
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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