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Vacuum Pump
By OE Match
- 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 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- 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 996 GT3 RS 2003-04
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
Fits:
Porsche 911 3.2 Carrera - 1984 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Porsche 996 - 1997 to 2005
Porsche 997 - 2005 to 2012
Porsche 991.1 - 2012 to 2016
Porsche 986 Boxster - 1997 to 2004
Porsche 987 Boxster / Cayman - 2005 to 2012
Diagram ref no 2 and 13
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9P1129487
The product you are viewing cross references to these numbers
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
This vacuum pump is a component in the brake servo (brake booster) system in various Porsche models (Boxster/Cayman, 997, 991, etc.). It helps generate the vacuum needed by the brake booster so that the driver has power assistance when applying the brakes.
In many modern Porsche engines (especially at higher performance levels, forced induction, or in engines where manifold vacuum is insufficient under certain operating conditions), an auxiliary vacuum pump is used because the engine’s intake manifold vacuum alone may not always provide adequate or stable vacuum for the brake booster.
The pump is typically driven mechanically (via the engine belt, accessory drive, or via an electric drive depending on vehicle) and draws vacuum from a chamber, then supplies that vacuum to the brake booster. Because the brake booster relies on consistent vacuum, degradation or failure of this pump can lead to harder brake pedal efforts or weak assistance under certain conditions.
Loss of vacuum / reduced vacuum output As the pump wears, internal leaks (seals, vanes, diaphragms) reduce its ability to maintain the required vacuum level. This causes the brake servo to get less assist, making the pedal feel harder.
Fits:
- Porsche Boxster 987 MKII 2.9L 2009-2012
- Porsche Boxster S 987 MKII 3.4L 2009-2012
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
- Porsche 991.1 Carrera C2 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C2S 3.8L (400Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C4S 3.8L (400Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520bhp) 2014-16
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
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:
- Intermittent vacuum supply. Pump may fail or fluctuate in output under certain engine speeds or loads, leading to inconsistent pedal feel.
- Mechanical wear / bearing failure. The internal rotating components, bearings, or drive shaft can wear, leading to noise, inefficiency, or eventual seizure.
- Leaks (external or internal). Seal failure can cause air leaks (vacuum loss) or allow unmetered air into the system, reducing servo effectiveness.
- Cracks, housing damage or corrosion. Over time, housing cracks or corrosion can affect integrity and result in leaks or mechanical failure.
- Failure of check valves / one-way valves. Some pump assemblies include check valves to maintain vacuum or prevent backflow; if these fail, vacuum can be lost.
- Age / fatigue. After many years and many duty cycles, material fatigue and seal degradation can degrade performance even without catastrophic failure.
- Associated component failure. Blocked vacuum lines, failed hoses, or clogged filters can mimic pump failure; sometimes the pump is replaced during diagnosis or when other parts are replaced.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A111009008
The product you are viewing cross references to these numbers
OEMatch Vacuum Pump — Durability, Sealing, Performance
OEMatch vacuum pump components for Porsche models are compatible replacements engineered to original-spec dimensions and tolerances — a practical option when genuine or OEM parts are unavailable. They support brake servo assistance, crankcase ventilation and turbo control, making them suitable for maintenance, rebuilds and targeted repairs.
Available Types
- Vacuum pump assemblies
- Gaskets and sealing kits
- Vacuum hoses, pipes and fittings
Understanding OEMatch Vacuum Pump
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original vacuum pump.
OE (Original Equipment) refers to parts matching original specifications for the vacuum pump and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM vacuum pump parts engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
OEMatch focuses on vacuum pump-related items selected for Porsche applications. The vacuum pump and its associated pipes, gaskets and fittings create and maintain negative pressure used by the brake servo, crankcase ventilation and certain boost-control systems. Maintaining a sealed vacuum system is essential for steady brake assistance and predictable engine behaviour.
Benefits Include
- Restores brake servo assistance and pedal feel
- Prevents vacuum leaks that affect idle and emissions
- Durable seals and materials for heat and oil exposure
Why Vacuum Pump Wear and Fail
- Deteriorating seals and gaskets leading to leaks
- Cracked or brittle hoses and fittings from heat and age
- Pump wear from oil contamination or bearing fatigue
The Importance of Replacing with OEMatch Vacuum Pump
Replacing worn or leaking vacuum pumps and related components preserves braking assistance and engine control on Porsche models. Timely renewal reduces the likelihood of a hard brake pedal, unstable idle or compromised boost control and helps maintain emissions behaviour and overall drivability.
Advantages
- Direct-fit replacements matching original dimensions and tolerances
- Materials selected for corrosion and heat resistance
- Restores system integrity without extensive modification
Support & Advice
Fitting can affect safety-critical systems. Installation should be carried out by a qualified technician following model-specific procedures and torque settings. Use calibrated tools and new fasteners where specified.
