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Porsche // 991 (911) MK1 2012-2016 // 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
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The Brake Booster Bellow is a small but vital component of your braking system. This protective rubber sleeve seals the brake booster pushrod where it connects to the brake pedal assembly, keeping the booster airtight and free from contamination.
Over time, the bellow can crack or tear, leading to vacuum leaks, reduced brake assist, or even premature brake booster failure. Replacing it with this genuine OEM Porsche part restores proper sealing, protects the booster internals, and ensures safe, consistent braking performance.
Fits:
What This Product Does:
The brake booster bellow is a protective rubber sleeve that fits onto the brake booster unit. Its purpose is to seal and protect the brake booster pushrod where it connects to the brake pedal assembly.
Functions:
Symptoms Of A Faulty Or Worn Bellow:
- Hissing or vacuum leaks near the brake pedal.
- Spongy or inconsistent brake pedal feel.
- Reduced brake assist, making the pedal harder to press.
- Dirt or debris contamination around the booster rod.
- Visible cracks, splits, or deterioration in the rubber.
The bellow is a small but important part of the brake system. A damaged or missing boot allows dust and moisture into the booster, which can lead to internal corrosion, vacuum leaks, and reduced braking performance.
Diagram Ref No 22
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99642326905
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