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Brake Master Cylinder
Brake Master Cylinder

34311157206 Brake Master Cylinder | BMW E30 3 Series Z1 Roadster

Brake Master Cylinder – 34 31 1 157 206

Brake master cylinder for BMW E30 3 Series (Sedan, Convertible, Touring) and Z1 Roadster.
Ref. No: 34 31 1 157 206
Function: Converts brake pedal force into hydraulic pressure.
Direct replacement brake hydraulic component.

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🛑 Brake Master Cylinder – Ref. 34 31 1 157 206 (BMW E30 / Z1)

Ensure reliable braking performance with the
COWIN OEM‑Standard Brake Master Cylinder.
Engineered for BMW E30 3 Series and Z1 Roadster, this component converts brake pedal force into hydraulic pressure to operate the wheel brakes safely and consistently across multiple classic BMW platforms.

✅ Key Features & Benefits

  • OEM Reference: Direct replacement referencing BMW part number 34 31 1 157 206.
  • E30 / Z1 Coverage: Fits E30 Sedan, Convertible, Touring and Z1 Roadster.
  • Precise Hydraulics: Consistent pressure output for stable BMW braking feel.
  • Durable Construction: High‑quality seals and cylinder bore for long service life.
  • Direct Replacement: Matches original mounting points and port configuration.

🚗 Vehicle Compatibility

Brand Model Body Style Chassis Code
BMW 3 Series Sedan E30
BMW 3 Series Convertible Convertible E30
BMW 3 Series Touring Estate / Wagon E30
BMW Z1 Roadster Z1

⚙️ Technical Specifications

  • Product: Brake Master Cylinder
  • BMW OEM Reference No.: 34 31 1 157 206
  • Material: Aluminum alloy body with reinforced seals
  • Installation: Direct replacement
  • Quality: 100% Tested & Inspected

🛠️ Installation Note

Disconnect the vehicle battery and relieve brake system pressure before installation.
Drain brake fluid and disconnect brake lines carefully.
Remove the old master cylinder and install the new unit using the original mounting points.
Reconnect brake lines, refill with recommended DOT 4 brake fluid, and bleed the brake system (including ABS unit if equipped) thoroughly before driving.

🏭 Why Choose COWIN Auto Parts?

COWIN (Gaoyun) specializes in brake system components.
Every Brake Master Cylinder is inspected for bore finish, seal integrity, and hydraulic performance.

Custom product FAQs

cowin is a leading enterprise in China’s auto parts industry. We adhere to professional technologies, high-performance products and excellent after-sales service to meet the needs of customers worldwide. cowin China will strive to be your one-stop supplier. Put forward your specific requirements, and we will work with you to find solutions!

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You can add your logo to our product, and all these can be customized according to your needs.

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Products in stock can be delivered within 7 days, while the lead time for mass production is 30-60 days after receiving the deposit.

 

The delivery lead time shall take effect under the following conditions: (1) We have received your deposit; (2) We have obtained your final confirmation of the products.

 

If our delivery lead time cannot meet your deadline, please communicate your specific requirements with your sales representative.

 

In all cases, we will make every effort to meet your needs, and we can do so in most instances.

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We have professional service team,we will keep update information about production/packing/shipping/delivery when you place an order.

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