Brake Servo

Bellow For Brake Booster.

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:

• Porsche Boxster 986 2.5L 1997-99
• Porsche Boxster 986 2.7L 1999-02
• Porsche Boxster S 986 3.2L 1999-02
• Porsche Boxster 986 2.7L 2003-04
• Porsche Boxster S 986 3.2L 2003-04
• Porsche Boxster 987 2.7L 2005 -08/08
• Porsche Boxster 987 S 3.2/3.4L 2005-08/08
• Porsche Boxster 987 MKII 2.9L 2009-2012
• Porsche Boxster S 987 MKII 3.4L 2009-2012
• Porsche Cayman 2.7L 987C 2006-08
• Porsche Cayman S 3.4L 987C 2005-08
• Porsche Cayman 2.9L 987C MKII 2009-12
• Porsche Cayman S / R 3.4L 987C MKII 2009-12
• Porsche 996 C2 3.4L 1997-08/01
• Porsche 996 C4 3.4L 1997-08/01
• Porsche 996 C2 3.6L 09/01-2005
• Porsche 996 C4 3.6L 09/01-2005
• Porsche 996 C4S 3.6L 09/01-2005
• Porsche 996 TURBO 2000-05
• Porsche 996 GT2 2001-05
• Porsche 996 GT3 MKI 1999-02
• Porsche 996 GT3 MKII 2003>>
• Porsche 997 Carrera 2 3.6L 2005>>
• Porsche 997 Carrera 2S 3.8L 2005>>
  
• Porsche 997 GT2 2007>>
• Porsche 997 MKII Carrera C2 3.6L 2009>>
  
• Porsche 997 MKII Carrera C4 3.6L 2009>>
  
• Porsche 997 MKII Carrera C2S 3.8L 2009>>
  
  

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:

• Protects the brake booster internals from dust, dirt, and moisture.
• Maintains an airtight seal for proper vacuum-assisted braking.
• Ensures smooth operation of the pushrod and brake pedal connection.
• Helps extend the life of the brake booster by preventing contamination.

 
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.
  
  

Why Replacement Matters:
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

The product you are viewing cross references to these numbers

Brake servo seal.



Fits:
Porsche 996 1998-05
Porsche 997.1 2005-08
Porsche 997.2 2009-12
Porsche 986 Boxster 1997-04
Porsche 987.1 Boxster 2005-08
Porsche 987.2 Boxster 2009-12
Porsche 987C.1 Cayman 2005-08
Porsche 987C.2 Cayman 2009-12
Porsche 970 Panamera 2010-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 10

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99635590101

The product you are viewing cross references to these numbers