Vacuum Pump

O-Ring for brake booster vacuum pump



Fits:
Porsche 987.2 Boxster 2009-12
Porsche 981 Boxster 2012-16
Porsche 981SP Boxster Spyder 2016
Porsche 987C.2 Cayman 2009-13
Porsche 981C Cayman 2014-16
Porsche 981C Cayman GT4 2016
Porsche 997.2 Carrera 2009-12
Porsche 997 Turbo / Turbo S 2010-13
Porsche 991.1 2012-16
Porsche 991.1 TURBO 2014>>

Click 'Zoom in' for large parts diagram.
Diagram ref no 11

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99970150440

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O-Ring for brake booster vacuum pump



Fits:
Porsche 987.2 Boxster 2009-12
Porsche 981 Boxster 2012-16
Porsche 981SP Boxster Spyder 2016
Porsche 987C.2 Cayman 2009-13
Porsche 981C Cayman 2014-16
Porsche 981C Cayman GT4 2016
Porsche 997.2 Carrera 2009-12
Porsche 997 Turbo / Turbo S 2010-13
Porsche 991.1 2012-16
Porsche 991.1 TURBO 2014>>

Click 'Zoom in' for large parts diagram.
Diagram ref no 11

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Related, superseded, cross reference or alternative numbers for comparison.

99970150440

The product you are viewing cross references to these numbers

O-Ring for vacuum pump. 

Fits:
Porsche 987.2 Boxster / Boxster S - 2009 to 2012
Porsche 987.2 Cayman / Cayman S - 2009 to 2012
Porsche 981 Boxster - 2012 to 2016
Porsche 981 Boxster Spyder - 2016
Porsche 981 Cayman - 2013 to 2016
Porsche 981 Cayman GT4 - 2016
Porsche 997.2 - 2009 to 2012
Porsche 997.2 turbo - 2009 to 2012
Porsche 991.1 - 2012 to 2016
Porsche 991 turbo - 2014 to 2020

Diagram ref no 12

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Related, superseded, cross reference or alternative numbers for comparison.

99970150540

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Vacuum pump. this item comes with O-rings.
This high-quality vacuum pump is built specifically as a compatible unit for Porsche OE reference 9A111009007.

Fits:
Porsche 987.2 Boxster 2009 - 2012
Porsche 981 Boxster 2012 - 2016
Porsche 987C.2 Cayman 2009 - 2012
Porsche 981C Cayman 2014 - 2016
Porsche 997.2 2009 - 2012
Porsche 997.2 Turbo / Turbo S 2010 - 2013
Porsche 991.1 2012 - 2016
Porsche 991.1 Turbo 2014 - 2017

Diagram ref no 10

Generates and supplies the vacuum pressure needed by the brake booster (servo), enabling the power brake system to assist the driver with lower pedal effort.
Maintains vacuum under varying engine conditions and loads to ensure consistent and reliable brake assistance

Why replacement matters:
•  A failing or leaky pump causes loss of vacuum, resulting in a stiff brake pedal, degraded braking performance, and increased driver effort
• Replacing with this robust Pierburg unit restores proper vacuum levels and reliable assist, improving safety and driving feel

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

9A111009007

The product you are viewing cross references to these numbers

Vacuum pump for brake servo.
The OE Match vacuum pump is a high-quality replacement manufactured to Porsche’s original specifications.

Fits:
Porsche 987.2 Boxster 2009 - 2012
Porsche 981 Boxster 2012 - 2016
Porsche 987C.2 Cayman 2009 - 2012
Porsche 981C Cayman 2014 - 2016
Porsche 997.2 2009 - 2012
Porsche 997.2 Turbo / Turbo S 2010 - 2013
Porsche 991.1 2012 - 2016
Porsche 991.1 Turbo 2014 - 2017

Diagram ref no 10

This pump generates the vacuum required by the brake booster (servo), allowing the system to amplify pedal force for smooth, consistent braking. By maintaining the correct vacuum pressure under varying engine loads, it ensures stable braking response and driver confidence.

Why replacement matters:
•  A worn or failing vacuum pump can reduce braking assistance, causing a heavy brake pedal and diminished stopping power
•  Leaks, cracks, or internal wear may result in vacuum loss, leading to erratic braking and potential safety hazards

Replacing with an OE Match unit restores factory-level performance, reliability, and safe braking operation.

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

9A111009007

The product you are viewing cross references to these numbers

Vacuum pump for the brake servo.
It’s a vacuum pump that generates and supplies vacuum pressure to the brake booster (servo), helping amplify the driver’s brake pedal force. Without its assistance, braking becomes harder and less responsive.

Fits:
Porsche 987.2 Boxster 2009 - 2012
Porsche 981 Boxster 2012 - 2016
Porsche 987C.2 Cayman 2009 - 2012
Porsche 981C Cayman 2014 - 2016
Porsche 997.2 2009 - 2012
Porsche 997.2 Turbo / Turbo S 2010 - 2013
Porsche 991.1 2012 - 2016
Porsche 991.1 Turbo 2014 - 2017

Diagram ref no 10

The pump connects between the engine and the brake booster, often located in the engine bay near the intake or accessory mounting area.

What this pump does:
•  Creates vacuum for the brake booster so less pedal effort is required
•  Maintains consistent vacuum under engine load and conditions to support stable braking
•  Ensures the brake servo has the suction needed for efficient braking response

A failing vacuum pump reduces or loses the vacuum needed by the brake booster, leading to a hard, heavy brake pedal and reduced braking assist If it leaks, cracks, or loses suction over time, braking performance and safety degrade.  Replacing it with a genuine unit ensures proper vacuum levels, restoring smooth, efficient braking and maintaining safety and reliability.

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

9A111009008

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