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Air Injection Pump / Air Injectors
By OE Match
- 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>>
This OE Match secondary air injection pump is a replacement electric air pump used in the vehicle emissions control system. It is designed to match the original-style fitment and function, helping restore correct secondary air system operation on Porsche 955 Cayenne S and Turbo models.
Fits:
Porsche 955 Cayenne S 4.5L 2003 - 2006
Porsche 955 Cayenne Turbo 4.5L 2003 - 2006
Diagram ref no 1 (Cylinders 1-4) or 2 (Cylinders 5-8).
The secondary air injection pump delivers fresh air into the exhaust system during cold starts. This helps the catalytic converters reach operating temperature more quickly and supports reduced cold-start emissions. Correct pump operation is also important for preventing secondary air system fault codes.
Functions
• Replaces the secondary air injection pump
• Supplies fresh air to the exhaust system during cold start
• Supports faster catalytic converter warm-up
• Helps reduce cold-start emissions
• Assists correct emissions control system operation
• Helps prevent secondary air injection fault codes
• OE Match replacement for Porsche 955 Cayenne emissions system repair.
Why Replace This Part?
Secondary air injection pumps can fail due to age, moisture ingress, carbon contamination, electrical faults, worn motor components, blocked air lines, or repeated cold-start operation. A failed pump may cause engine warning lights, emissions fault codes, rough cold-start behaviour, or failed emissions testing. Replacing the pump helps restore correct secondary air system performance.
When to Replace This Part
• Engine warning light is illuminated
• Secondary air injection fault codes are present
• Pump is noisy, weak, seized, or inoperative
• Cold-start emissions system faults are being diagnosed
• Vehicle has failed emissions testing
• Air injection lines or valves are being serviced
• Preventative replacement is required during emissions system repair
Where it fits on the car
This pump fits within the secondary air injection / emissions control system on Porsche 955 Cayenne S and Cayenne Turbo models. Exact position can vary depending on engine layout and model specification.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95560510
The product you are viewing cross references to these numbers
OEMatch Air Injection Pump / Air Injectors — Fit, Function, Confidence
OEMatch Air Injection Pump / Air Injectors provide replacements and related items for Porsche models. OEMatch focuses on air injection pumps and injectors selected for Porsche applications. These parts support emissions control at cold start and help the catalytic converter reach operating temperature more quickly, improving idle stability until normal running temperature is achieved.
Available Types
- Air injection pumps
- Air injectors
- Associated hoses, check valves and mounting hardware
Understanding OEMatch Air Injection Pump / Air Injectors
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original air injection pumps and injectors.
OE (Original Equipment) refers to parts matching original specifications for the air injection pumps and injectors and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM air injection pumps and injectors engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
The secondary air injection system uses a pump and injectors to introduce fresh air into the exhaust stream during cold starts. This added air accelerates catalytic converter warm-up, encourages combustion of unburnt fuel, reduces hydrocarbon emissions and helps maintain a smooth idle while the engine reaches normal operating temperature.
Benefits Include
- Improved cold-start combustion and smoother idle
- More reliable emissions control during warm-up
- Reduced risk of catalytic converter overheating or contamination
Why Air Injection Pump / Air Injectors Wear and Fail
- Moisture ingress and internal corrosion of pump components
- Carbon and deposit build-up that blocks injector ports or valves
- Cracked or leaking hoses, valves or seals reducing airflow
- Electrical faults, relays or control issues affecting pump operation
The Importance of Replacing with OEMatch Air Injection Pump / Air Injectors
Replacing worn or faulty air injection pumps and injectors restores proper exhaust air delivery during cold start, helping the catalytic converter reach operating temperature promptly and reducing emissions. Timely replacement can improve drivability at idle, prevent downstream exhaust damage and support regulatory compliance for Porsche vehicles where emissions testing applies.
Advantages
- Direct-fit replacements engineered to match original dimensions and tolerances
- Components selected for compatibility with factory mounting points and clearances
- Options for pump, injector and associated hose or valve replacement without replacing unrelated assemblies
