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Air pump. Porsche 986 Boxster / 996 - 99660510404
99660510404/1
Vehicle Group
- 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 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
Information
Air pump
This OE Match secondary air injection pump (SIR pump) is an emissions control component designed for Porsche 986 Boxster and Porsche 911 (996) models. It forms part of the secondary air injection system, which pumps fresh air into the exhaust system during cold engine start-up to help reduce emissions.
Fits:
Porsche 986 Boxster / Boxster S 2000 - 2004
Porsche 996 C2 /C4 / C4S 2000 - 2005
Porsche 996 Turbo 2001 - 2005
Diagram ref no 1
This part supersedes earlier Porsche part numbers: 99660510400, 99660510401.
The secondary air injection pump, often referred to as a SIR pump or air injection pump, is a key component in the engine emissions system. It operates primarily during cold starts, forcing fresh air into the exhaust manifold. This additional oxygen helps burn remaining fuel vapours in the exhaust gases before they pass through the catalytic converters.
The OE Match secondary air injection pump follows the original Porsche design specifications for airflow capacity, electrical connections and mounting points. This ensures the pump works correctly with the vehicle’s engine control unit (ECU) and secondary air valves.
When the engine is started cold, the pump injects fresh air into the exhaust system. The extra oxygen promotes more complete combustion of residual hydrocarbons in the exhaust stream and allows the catalytic converters to heat up faster.
This process significantly reduces cold-start emissions and helps the vehicle meet environmental regulations.
Function
• Secondary Air Injection: Pumps fresh air into the exhaust system during cold start
• Emission Reduction: Helps burn unburned hydrocarbons in exhaust gases
• Catalytic Converter Warm-Up: Accelerates catalyst operating temperature
• Engine Management Integration: Works with ECU and secondary air valves
Secondary air pumps operate during every cold start and are exposed to moisture, temperature changes and exhaust gases. Over time the internal motor or pump mechanism may fail, which can trigger a check engine light and increase emissions output. Replacing a faulty pump restores proper operation of the emissions system and ensures efficient engine performance.
When to Replace. Consider replacing the secondary air pump if you notice:
• Check engine light related to secondary air injection faults
• Unusual whining or whistling noise during cold start
• Rough idle during cold start
• Vehicle fails emissions testing
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99660510404
The product you are viewing cross references to these numbers
This OE Match secondary air injection pump (SIR pump) is an emissions control component designed for Porsche 986 Boxster and Porsche 911 (996) models. It forms part of the secondary air injection system, which pumps fresh air into the exhaust system during cold engine start-up to help reduce emissions.
Fits:
Porsche 986 Boxster / Boxster S 2000 - 2004
Porsche 996 C2 /C4 / C4S 2000 - 2005
Porsche 996 Turbo 2001 - 2005
Diagram ref no 1
This part supersedes earlier Porsche part numbers: 99660510400, 99660510401.
The secondary air injection pump, often referred to as a SIR pump or air injection pump, is a key component in the engine emissions system. It operates primarily during cold starts, forcing fresh air into the exhaust manifold. This additional oxygen helps burn remaining fuel vapours in the exhaust gases before they pass through the catalytic converters.
The OE Match secondary air injection pump follows the original Porsche design specifications for airflow capacity, electrical connections and mounting points. This ensures the pump works correctly with the vehicle’s engine control unit (ECU) and secondary air valves.
When the engine is started cold, the pump injects fresh air into the exhaust system. The extra oxygen promotes more complete combustion of residual hydrocarbons in the exhaust stream and allows the catalytic converters to heat up faster.
This process significantly reduces cold-start emissions and helps the vehicle meet environmental regulations.
Function
• Secondary Air Injection: Pumps fresh air into the exhaust system during cold start
• Emission Reduction: Helps burn unburned hydrocarbons in exhaust gases
• Catalytic Converter Warm-Up: Accelerates catalyst operating temperature
• Engine Management Integration: Works with ECU and secondary air valves
Secondary air pumps operate during every cold start and are exposed to moisture, temperature changes and exhaust gases. Over time the internal motor or pump mechanism may fail, which can trigger a check engine light and increase emissions output. Replacing a faulty pump restores proper operation of the emissions system and ensures efficient engine performance.
When to Replace. Consider replacing the secondary air pump if you notice:
• Check engine light related to secondary air injection faults
• Unusual whining or whistling noise during cold start
• Rough idle during cold start
• Vehicle fails emissions testing
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99660510404
99660510400
99660510401
0580000022
The product you are viewing cross references to these numbers
Price: £335.00
In stock
Related products
Vehicle Group
- Porsche 997 MKII Turbo 2010-13
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17
- Porsche 95B.1 Macan S Petrol 3.0L V6 (340Bhp) 2014-18
- Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18
Information
Secondary air injection pump.
OE Match secondary air injection pump that mirrors the original Porsche unit in fit, connector style, and airflow function. It’s used to support the engine’s secondary air system on multiple Porsche platforms including 997 Turbo / 991 Turbo / 958 Cayenne / 95B Macan / 970 Panamera.
Fits:
Porsche 958 Cayenne 3.6L V6 2015 - 2018
Porsche 95B Macan S 3.0L / Macan Turbo 3.6L 2014 - 2018
Porsche 970 Panamera S 3.0L 2014 - 2016
Porsche 997.2 3.8L Turbo / Turbo S 2010 - 2013
Porsche 991.1 3.8L Turbo 2014 - 2016
Porsche 991.2 3.8L Turbo / Turbo S / GT2 RS 2017 - 2018
Porsche 991 GT3 3.8L 2014 - 2017
Porsche 991 4.0L GT3 / GT3 RS / R 2015 - 2018
Diagram ref no 3
This is an electric air pump that forms the heart of the Porsche secondary air injection (SAI) system. In OE Match form, it’s manufactured to replicate the OE housing shape, mounting points, and electrical characteristics so it installs as a direct replacement when the original pump becomes noisy, weak, or fails.
On cold start, the pump pushes fresh air into the exhaust stream (via the SAI system valves and pipework). This helps the catalytic converters warm up faster and reduces cold-start emissions - supporting smooth compliance with the vehicle’s emissions strategy.
A failing secondary air pump can trigger emissions warnings and drivability annoyances (MIL/check engine light) because the ECU may detect insufficient secondary air flow during cold start. Replacing the pump restores proper SAI operation and helps keep emissions functions working as intended.
When to replace:
• Check engine light / emissions-related fault codes linked to secondary air flow
• Pump runs loudly, squeals, or sounds rough on cold start
• Pump not running during cold start when commanded
• Water ingress/corrosion damage or seized pump motor
• Preventative replacement during secondary air system service
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95B959253C
The product you are viewing cross references to these numbers
OE Match secondary air injection pump that mirrors the original Porsche unit in fit, connector style, and airflow function. It’s used to support the engine’s secondary air system on multiple Porsche platforms including 997 Turbo / 991 Turbo / 958 Cayenne / 95B Macan / 970 Panamera.
Fits:
Porsche 958 Cayenne 3.6L V6 2015 - 2018
Porsche 95B Macan S 3.0L / Macan Turbo 3.6L 2014 - 2018
Porsche 970 Panamera S 3.0L 2014 - 2016
Porsche 997.2 3.8L Turbo / Turbo S 2010 - 2013
Porsche 991.1 3.8L Turbo 2014 - 2016
Porsche 991.2 3.8L Turbo / Turbo S / GT2 RS 2017 - 2018
Porsche 991 GT3 3.8L 2014 - 2017
Porsche 991 4.0L GT3 / GT3 RS / R 2015 - 2018
Diagram ref no 3
This is an electric air pump that forms the heart of the Porsche secondary air injection (SAI) system. In OE Match form, it’s manufactured to replicate the OE housing shape, mounting points, and electrical characteristics so it installs as a direct replacement when the original pump becomes noisy, weak, or fails.
On cold start, the pump pushes fresh air into the exhaust stream (via the SAI system valves and pipework). This helps the catalytic converters warm up faster and reduces cold-start emissions - supporting smooth compliance with the vehicle’s emissions strategy.
A failing secondary air pump can trigger emissions warnings and drivability annoyances (MIL/check engine light) because the ECU may detect insufficient secondary air flow during cold start. Replacing the pump restores proper SAI operation and helps keep emissions functions working as intended.
When to replace:
• Check engine light / emissions-related fault codes linked to secondary air flow
• Pump runs loudly, squeals, or sounds rough on cold start
• Pump not running during cold start when commanded
• Water ingress/corrosion damage or seized pump motor
• Preventative replacement during secondary air system service
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95B959253C
9A160510472
9A160510472
95B959253
95B959253C
The product you are viewing cross references to these numbers
Price: £199.00
In stock
Vehicle Group
- Porsche 997 MKII Turbo 2010-13
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17
- Porsche 95B.1 Macan S Petrol 3.0L V6 (340Bhp) 2014-18
- Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18
Information
Secondary air injection pump.
Fits:
Porsche 958 Cayenne 3.6L V6 2015 - 2018
Porsche 95B Macan S 3.0L / Macan Turbo 3.6L 2014 - 2018
Porsche 970.1 Panamera S 3.0L 2014 - 2016
Porsche 997.2 3.8L Turbo / Turbo S 2010 - 2013
Porsche 991.1 3.8L Turbo 2014 - 2016
Porsche 991.2 3.8L Turbo / Turbo S / GT2 RS 2017 - 2018
Porsche 991 GT3 3.8L 2014 - 2017
Porsche 991 4.0L GT3 / GT3 RS / R 2015 - 2018
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95B959253C
The product you are viewing cross references to these numbers
Fits:
Porsche 958 Cayenne 3.6L V6 2015 - 2018
Porsche 95B Macan S 3.0L / Macan Turbo 3.6L 2014 - 2018
Porsche 970.1 Panamera S 3.0L 2014 - 2016
Porsche 997.2 3.8L Turbo / Turbo S 2010 - 2013
Porsche 991.1 3.8L Turbo 2014 - 2016
Porsche 991.2 3.8L Turbo / Turbo S / GT2 RS 2017 - 2018
Porsche 991 GT3 3.8L 2014 - 2017
Porsche 991 4.0L GT3 / GT3 RS / R 2015 - 2018
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95B959253C
9A160510472
95B959253
95B959253A
95B959253B
95B959253C
The product you are viewing cross references to these numbers
Price: £1,129.89
Orderable