Vacuum Unit
Fits:
Porsche 993 Carrera 1994-98 (Engine: 6405 / 6406 / 6407 / 6408)
Porsche 993 Turbo 3.6L 1994-98 (Engine: 6460)
Porsche 996 Carrera 1998-05 (Engine: 9601 / 9602 / 9604 / 9603)
Porsche 996 Turbo 2001-05
Porsche 996 GT3 / GT3 RS 1999-05 (Engine: 9676 / 9679)
Porsche 986 Boxster 2.5L 1997-99 (Engine: 9620)
Porsche 986 Boxster 2.7L / S 3.2L 2000-02 (Engine: 9621 / 9622 / 9623 / 9624)
Porsche 991 GT3 2014-21
Click 'Zoom in' for large parts diagram.
Diagram ref no 6
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
0PB129093
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- 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 991.1 GT3 3.8L (475Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500Bhp) 2015-16
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
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12 Month Warranty
Worldwide Delivery
This a high-quality replacement reservoir stores vacuum created by the engine or vacuum pump, providing a steady supply of vacuum to systems such as brake boosters, emissions control, and actuators even under engine load or varying vacuum conditions. It’s moulded from durable plastic with designed internal volume, mounting bosses, and port locations matching the original Porsche part (replaces 99311014002 / 99311014003 / 0PB129093).
Fits:
Porsche 993 Carrera 1994-98 (Engine: 6405 / 6406 / 6407 / 6408)
Porsche 993 Turbo 3.6L 1994-98 (Engine: 6460)
Porsche 996 Carrera 1998-05 (Engine: 9601 / 9602 / 9604 / 9603)
Porsche 996 Turbo 2001-05
Porsche 996 GT3 / GT3 RS 1999-05 (Engine: 9676 / 9679)
Porsche 986 Boxster 2.5L 1997-99 (Engine: 9620)
Porsche 986 Boxster 2.7L / S 3.2L 2000-02 (Engine: 9621 / 9622 / 9623 / 9624)
Porsche 991 GT3 2014-21
Diagram ref no 6
Engineered to OE standards, this unit replicates the original shape, mounting points, port alignment, and internal volume. Its material resists heat, oil vapor, and pressure cycling to provide reliable vacuum buffering over long-term use.
Over time, the vacuum reservoir can crack, leak, or lose internal sealing, leading to:
• Reduced braking assistance
• Malfunction of intake or exhaust actuators
• Check-engine lights caused by vacuum faults
• Rough idling or loss of power under load
Replacing the vacuum reservoir restores full vacuum stability and ensures proper operation of all connected systems. This is especially important when diagnosing brake booster failures, emissions issues, or vacuum leak codes.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
0PB129093
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- 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 991.1 GT3 3.8L (475Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500Bhp) 2015-16
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
Shop Securely
12 Month Warranty
Worldwide Delivery
Air Intake Vacuum Units – Precision Airflow Control for Porsche Performance
Air intake vacuum units are critical components in your Porsche’s engine management and intake control systems. These units regulate airflow and vacuum pressure to ensure efficient combustion, smooth idling, and responsive throttle performance. They also assist with various engine functions, including actuator operation, flap control, and emissions regulation — maintaining the perfect balance of air and fuel for optimal performance.
At Design911, we stock a complete selection of genuine and high-quality air intake vacuum units for models such as the Porsche 911, Boxster, Cayman, Cayenne, Macan, and Panamera models. Each part is engineered for durability, precision, and seamless integration, helping to maintain your Porsche’s performance, reliability, and efficiency.
What Do Air Intake Vacuum Units Do?
The air intake vacuum unit controls and stabilises airflow
within the engine’s intake system. Its key functions include:
- Regulating
vacuum pressure for intake flap and actuator control.
- Optimising
air distribution to improve torque and efficiency.
- Assisting
in emissions management by adjusting airflow dynamically.
- Supporting smooth transitions between load conditions and throttle positions.
By ensuring consistent vacuum pressure, these units help your Porsche’s engine breathe efficiently — resulting in refined performance and enhanced driveability.
Why Do Air Intake Vacuum Units Fail?
Due to constant exposure to heat, vibration, and fluctuating
pressures, vacuum units can deteriorate over time. Common causes of failure
include:
- Vacuum
leaks caused by cracked housings or brittle hoses.
- Internal
diaphragm wear reducing vacuum control efficiency.
- Heat
damage from prolonged engine operation.
- Corrosion
or contamination affecting valves or connections.
- Age-related material fatigue or mechanical sticking.
Symptoms of a failing vacuum unit include rough idle, loss of low-end torque, poor throttle response, check engine light, or erratic intake flap operation.
Why Replace a Faulty Air Intake Vacuum Unit?
A malfunctioning vacuum unit can disrupt airflow and air-fuel ratios, leading to reduced performance and increased emissions. Replacing worn or damaged units ensures consistent vacuum regulation and reliable engine operation.
Benefits of replacement include:
- Restored intake control and throttle response.
- Improved fuel efficiency and combustion balance.
- Enhanced power delivery and smoother idle.
- Long-term durability with manufacturer-quality materials.
All air intake vacuum units available at Design911 are built from high-grade materials and precision-engineered components designed to withstand high temperatures and pressures — ensuring dependable performance in all driving conditions.
