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Air Injection Pump / Air Injectors
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MKII GT3 2010-11
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche Carrera GT 2003-06
Fits:
Porsche 997 GT3 2007-11
Porsche 991 GT3 2014-21
Porsche Carrera GT 2004-06
Click 'Zoom in' for large parts diagram.
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99711324990
The product you are viewing cross references to these numbers
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MKII GT3 2010-11
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche Carrera GT 2003-06
Fits:
Porsche 997 GT3 2007-11
Porsche 991 GT3 2014-21
Porsche Carrera GT 2004-06
Click 'Zoom in' for large parts diagram.
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99711324990
The product you are viewing cross references to these numbers
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- 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 Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Fits:
Porsche 987.1 Boxster / Boxster S MKI 2005>>2008
Porsche 987.1 Cayman / Cayman S MKI 2006>>2008
Porsche 997.1 Carrera 2 / 4 MKI 2005>>2008
Porsche 997.1 Carrera 2S / 4S MKI 2005>>2008
Diagram Ref No 15
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99711334000
The product you are viewing cross references to these numbers
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MKII GT3 2010-11
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
- Porsche 955 Cayenne Turbo S 4.5L 2006>>
Sold each
Fits:
Porsche 987.1 Boxster / Boxster S 2.7ltr / 3.4ltr - 2005 to 2008
Porsche 987.1 Cayman / Cayman S 2.7ltr / 3.4ltr - 2005 to 2008
Porsche 997.1 Carrera 2S / Carrera 4S 3.8ltr - 2005 to 2008
Porsche 997 GT3 - 2007 to 2012
Porsche 955 Cayenne S / turbo - 2003 to 2006
Click 'Zoom in' for large parts diagram.
Diagram ref no 2
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95511332500
The product you are viewing cross references to these numbers
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MKII GT3 2010-11
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Fits:
Porsche 987 Boxster / Boxster S 2005-08
Porsche 987C Cayman / Cayman S 2005-08
Porsche 997 Carrera 2005-08 COUPE/CABRIO
Porsche 996 GT3 / GT3 RS 2004-05
Porsche 997 GT3 2007-09
Porsche 997 GT3 / GT3 RS / GT3 RS 4.0 2010-13
Click 'Zoom in' for large parts diagram.
Diagram ref no 1
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99760510402
The product you are viewing cross references to these numbers
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MKII Turbo 2010-13
This genuine Porsche Secondary Air Pump is an original factory emissions-control component designed for the Porsche 911 (997) Turbo models equipped with the 3.6 L twin-turbo engine. This pump forms part of the secondary air injection (SAI) system, which works with the engine management system and catalytic converters to reduce exhaust emissions during engine start-up.
Fits:
Porsche 997.1 Turbo 3.6L 2007 - 2009 (9770)
Porsche 997.2 Turbo 3.6L 2010 - 2012 (9770)
Diagram ref no 1
The secondary air pump injects fresh air into the exhaust system during cold engine start-up. This additional oxygen helps burn unburned hydrocarbons in the exhaust gases, allowing the catalytic converters to reach operating temperature more quickly and significantly reducing harmful emissions. The pump is automatically controlled by the vehicle’s engine control unit (ECU) and operates only during specific operating conditions, mainly during cold starts.
Functions & Technical Role Secondary air injection:
• Supplies fresh air to the exhaust system during cold start
• Emissions reduction: Helps oxidize unburned hydrocarbons in exhaust gases
• Catalytic converter warm-up: Accelerates catalyst operating temperature for cleaner emissions
• ECU-controlled operation: Works with sensors and air valves within the emissions system
• OEM reliability: Designed to meet Porsche’s airflow and durability specifications
Fitment / Position on Car
• Fitting position: Engine compartment / emissions system
• Location: Mounted within the secondary air injection system near the engine
• System: Exhaust emissions control / secondary air injection system
Secondary air pumps are exposed to heat, moisture, and frequent start-up cycles. Over time, internal electric motors or air channels may fail, which can cause:
• Check engine light related to the secondary air system
• Higher emissions during cold start Failed emissions testing
• Reduced catalytic converter efficiency
Replacing a faulty pump with a genuine Porsche OE component restores proper emissions system operation and ensures the vehicle continues to meet performance and environmental standards.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99760520400
The product you are viewing cross references to these numbers
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MKII Turbo 2010-13
This OE Match secondary air pump is an emissions control component designed for Porsche 911 (997) Turbo models with the 3.6L engine. The pump forms part of the secondary air injection system, which introduces fresh air into the exhaust system during cold engine start-up to help reduce emissions.
Fits:
Porsche 997.1 Turbo 3.6L 2007 - 2009 (9770)
Porsche 997.2 Turbo 3.6L 2010 - 2012 (9770)
Diagram ref no 1
The secondary air pump is part of the air injection system used in many high-performance Porsche engines to control emissions during cold start conditions. When the engine is first started, the pump forces fresh air into the exhaust manifolds, allowing unburned fuel in the exhaust gases to oxidise and burn more completely.
This process allows the catalytic converters to reach their optimal operating temperature more quickly, reducing hydrocarbon emissions and helping the vehicle meet emissions regulations.
The OE Match pump is designed to match the original Porsche component in airflow capacity, electrical connections and mounting configuration, providing a reliable replacement during emissions system repair.
During cold engine start-up, the pump injects fresh air into the exhaust system. The additional oxygen promotes the combustion of residual fuel vapours in the exhaust gases, allowing the catalytic converters to heat up rapidly and operate efficiently.
Once the engine reaches normal operating temperature, the secondary air injection system typically switches off.
Function
• Secondary Air Injection: Delivers fresh air into the exhaust system during cold start
• Emission Reduction: Helps burn unburned hydrocarbons in exhaust gases
• Catalytic Converter Warm-Up: Speeds catalyst heating for improved efficiency
• ECU Integration: Operates as part of the vehicle’s emissions management system
Secondary air pumps operate during every cold start and are exposed to heat, moisture and vibration. Over time the internal motor or pump mechanism can fail, which may trigger a check engine light and increase emissions output. Replacing a faulty pump restores proper air injection and ensures the vehicle’s emissions system functions correctly.
When to Replace. Consider replacing the secondary air pump if you notice:
• Check engine light related to secondary air injection faults
• Increased cold-start emissions
• Unusual noise from the pump during startup
• Failure during emissions testing
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99760520400
The product you are viewing cross references to these numbers
-
air injection for 997.1 M96.05 3.6L COUPE / CABRIO and 997.1 M97.01 3.8L COUPE S / CABRIO S 2005-08 108-05
-
air injection for 997.1 TURBO/GT2 M97.70 2007-09 and 997.1 GT2 RS M97.70 2011 108-05
-
air injection 997 GT3 M97.76 2007-09 108-05
-
air injection 997 GT3 / GT3 RS M97.77 2010-11 and 997 GT3 RS 4.0 M97.74 2011 108-06
Air Injection Pumps & Air Injectors – Clean Performance & Efficient Emissions for Porsche Engines
Air injection pumps and air injectors are essential components of Porsche’s secondary air injection system, designed to improve cold-start performance and reduce harmful exhaust emissions. By injecting fresh air into the exhaust manifold or catalytic converter, these parts help burn un-combusted fuel during startup, allowing the engine to warm up faster and operate more efficiently.
At Design911, we supply a comprehensive range of genuine and high-quality air injection pumps and air injectors for various Porsche modes including, 911, Boxster, Cayman, Cayenne, Macan, and Panamera models. Each component is engineered for precise airflow, quiet operation, and long-term durability — ensuring your Porsche remains compliant with emissions standards while maintaining peak performance.
What Do Air Injection Pumps & Air Injectors Do?
The secondary air injection system uses these components to
introduce clean air into the exhaust stream to support combustion and emissions
control. Specifically, they:
- Inject
fresh air into the exhaust system during cold starts.
- Accelerate
catalytic converter warm-up for cleaner operation.
- Reduce
unburned hydrocarbons and lower emission output.
- Support smooth idle and efficient fuel burn during startup.
Together, the air injection pump and injectors help your Porsche meet performance and emissions regulations, particularly under strict testing conditions.
Why Do Air Injection Pumps & Air Injectors Fail?
These components are exposed to high temperatures, moisture,
and contaminants, making them prone to wear and degradation over time. Common
causes of failure include:
- Moisture
ingress leading to internal corrosion.
- Carbon
buildup clogging injector ports or valves.
- Cracked
or leaking hoses reducing airflow efficiency.
- Electrical
or relay faults affecting pump operation.
- Contaminated air passages impairing airflow.
Symptoms of failure include rough cold starts, engine warning lights, failed emissions tests, unusual noises, or reduced performance at idle.
Why Replace Faulty Air Injection Components?
A malfunctioning air injection pump or injector can cause increased emissions, poor drivability, and potential damage to the catalytic converter. Replacing worn components restores optimal airflow, smooth operation, and regulatory compliance.
Benefits of replacement include:
- Improved cold-start performance and smoother idle.
- Reliable emissions control and efficiency.
- Prevention of catalytic converter damage.
- Long-lasting durability with manufacturer-quality precision.
All air injection components at Design911 feature high-quality materials, corrosion-resistant housings, and precision-engineered internal valves to ensure consistent airflow and long service life.
