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Brake Booster

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94435502300
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Brake Booster. GIRLING.

porsche

Fits:
Porsche 924S 1986-88 LHD Cars
Porsche 944 1982-85
Porsche 944 1985-86 LHD Cars

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94435502300
94435502300

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Brake Booster. Porsche 924S / 944  94435502300

ate

Fits:
Porsche 924S 1986-88 LHD Cars
Porsche 944 1982-85
Porsche 944 1985-86 LHD Cars

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94435502300
94435502300
03.7750-5702.4

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Special Order item
94435502311
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Brake Booster. ATE.

porsche

Fits:
Porsche 924S 1986-88 RHD Cars
Porsche 944 1982-85
Porsche 944 1985-90
Porsche 944 1985-91 (M593) cars with ABS (Bosch)
Porsche 968 1992-95

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94435502311
94435502311

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DISPLAYING 1 to 3 (of 3 products)
About Brake Booster

High-Quality Brake Boosters for Safe, Effortless and Consistent Braking Performance

Brake boosters—also known as power brake boosters—are essential hydraulic components that amplify the force applied to the brake pedal. By using vacuum or hydraulic pressure assistance, the brake booster helps deliver strong braking performance with minimal driver effort. Whether driving a classic car or a modern performance vehicle, a properly functioning brake booster ensures predictable stopping distances, stable pedal feel and safe braking under all conditions.

A healthy booster is key to driving comfort, road safety and confidence—especially in emergency braking situations or repeated heavy braking.

What Brake Boosters Do

Brake boosters enhance braking capability by performing several critical functions:

  • Amplifying pedal input, providing stronger braking force with less effort
  • Improving braking response for smoother, quicker stopping
  • Maintaining stable brake pressure across varying driving conditions
  • Supporting ABS and advanced brake control systems
  • Reducing driver fatigue during heavy or frequent braking
  • Helping maintain consistent performance in both low-speed and high-speed situations

With a properly functioning booster, brakes feel more responsive, controlled and progressive.

Why Brake Boosters Commonly Fail

Brake boosters can wear out due to age, heat, vacuum loss or hydraulic issues. Common failure causes include:

  • Vacuum leaks from damaged hoses or internal seals
  • Diaphragm failure leading to loss of brake assistance
  • Internal corrosion caused by moisture buildup
  • Faulty check valves preventing vacuum retention
  • Brake fluid contamination damaging internal components
  • Heat-related degradation of diaphragms and seals
  • Wear due to high mileage or repeated heavy braking

Symptoms often include a hard brake pedal, increased stopping distances, hissing noises, inconsistent pedal feel or warning lights.

Why You Should Replace a Faulty Brake Booster

Replacing a worn or failing brake booster with a high-quality, precision-engineered alternative designed to match original braking performance ensures your vehicle remains safe and responsive.

Key benefits include:

  • Restored braking assistance and lighter pedal effort
  • Improved stopping power and safety in all conditions
  • Consistent pedal feel with predictable braking response
  • Prevention of brake fade due to excessive pedal force
  • Reliable operation of vacuum-dependent brake systems
  • Peace of mind during emergency or high-load braking situations

A new brake booster significantly improves braking comfort and reliability, making it an essential maintenance replacement for any vehicle with reduced brake assist.

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