Secondary air pump. Porsche 997 Turbo  ❭  99760520400

Secondary air pump
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Related, superseded, cross reference or alternative numbers for comparison.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

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