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Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://www.design911.co.uk/images/schemaLogo.png https://www.design911.co.uk/images/schemaLogo.png +443456003478 https://www.design911.co.uk Facebook Instagram
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Product Information
Product Information
Brake Master Cylinder. 
The OE Match Brake Master Cylinder is a precision-engineered hydraulic braking system component designed to convert brake pedal force into hydraulic pressure, enabling effective operation of the vehicle's braking system. Manufactured to OE specifications for fit, performance and durability, this master cylinder is a critical safety component that ensures consistent and reliable braking performance under all driving conditions. 

Fits: 
  • Porsche 964 (911) C4 1989-93
  • Porsche 964 (911) TURBO 3.3L 1991-93
  • Porsche 964 (911) TURBO 3.6L 1991-93  

Constructed from high-quality materials with precision-machined internal bores, pistons and durable seals, the brake master cylinder is designed to withstand continuous hydraulic pressure cycles and prolonged use. It distributes brake fluid pressure throughout the braking system, allowing the brake calipers or wheel cylinders to apply the necessary braking force when the pedal is pressed.  

What This Product Does:
  • Converts brake pedal input into hydraulic pressure.
  • Supplies brake fluid pressure to the braking system.
  • Operates brake calipers or wheel cylinders.
  • Ensures consistent and responsive braking performance.
  • Maintains proper hydraulic balance throughout the braking circuit.
  • Supports safe vehicle stopping and control.
  • Provides reliable brake pedal feel and response.
  • Forms a vital part of the vehicle's primary braking system.

Symptoms Of Wear Or Failure:
  • Soft, spongy or inconsistent brake pedal feel.
  • Brake pedal slowly sinking towards the floor.
  • Increased stopping distances.
  • Reduced braking efficiency.
  • Brake fluid leaks around the master cylinder.
  • Low brake fluid level without visible external leaks elsewhere.
  • Brake warning light illumination.
  • Uneven brake pressure distribution.
  • Difficulty maintaining consistent braking performance.
  • Complete loss of hydraulic braking pressure in severe cases.

Why Replacement Matters:

  • The brake master cylinder is one of the most important safety-critical components in the vehicle. It operates every time the brake pedal is pressed and is subjected to constant hydraulic pressure, temperature fluctuations and fluid movement. Over time, internal seals can wear, pistons may deteriorate and corrosion can develop within the cylinder bore, reducing braking efficiency.
  • A failing brake master cylinder can significantly compromise braking performance, increasing stopping distances and reducing driver confidence. If left unresolved, hydraulic pressure loss may lead to partial or complete brake failure, creating a serious safety risk for both vehicle occupants and other road users.
  • Replacing a worn or faulty brake master cylinder restores proper hydraulic pressure, improves brake response and ensures safe, reliable braking performance. An OE Match replacement provides factory-style fitment, dependable sealing and long-term durability, helping maintain the braking performance, safety and reliability expected from your Porsche.



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