Description
Air pump recuperator suitable for petrol engines Citroën Peugeot
Tested – functional
This secondary air pump is designed for petrol engines used in a range of Citroën and Peugeot models. Supplied with the original part numbers 9653340580 and 1618E4, it supports cold-start emission control by injecting fresh air into the exhaust stream to help the catalytic converter reach operating temperature faster. Ideal for professional mechanics and experienced DIY enthusiasts searching by product code.
Technical information
- Manufacturer: Stellantis
- Model: Citroën C4, Citroën C5, Citroën Xsara Picasso, Peugeot 206, Peugeot 307, Peugeot 407
- Product Codes: 9653340580, 1618E4
- Other Numbers: No Additional Numbers Available
Function
The unit is a secondary (air injection) pump that delivers fresh air into the exhaust manifold during cold starts. By supplying extra oxygen, it accelerates light-off of the catalytic converter, reducing hydrocarbon and carbon monoxide emissions until the exhaust system reaches optimal temperature.
Common Failure Reasons
Failures typically occur due to mechanical wear (worn bearings or seized rotor), contamination from soot and oil, water ingress, clogged check valves or filters, and electrical issues such as damaged wiring, blown fuses, or failed relays. Prolonged exposure to high temperatures and exhaust condensates accelerates wear.
Replacement And Installation Recommendations
For a safe and reliable replacement follow these general steps: disconnect the negative battery terminal before work; locate the pump in the engine bay or near the firewall depending on model; remove electrical connector, vacuum/hose connections and mounting fasteners; replace the unit and any associated check valve or hoses showing wear; secure all fittings and reconnect the battery. After installation, start the engine and verify pump operation and absence of air leaks or fault codes. Always use the manufacturer’s torque specifications for mounting bolts and check associated electrical fuses and relays when diagnosing.
Service Life And Tips
There is no fixed replacement interval for the secondary air pump; lifespan varies with driving style, mileage and operating conditions. Pumps commonly start to show faults after high mileage or after contamination events. When replacing the pump, consider also inspecting and, if necessary, replacing non-return valves and rubber hoses to prevent repeat failure.
Searchable by part numbers 9653340580 and 1618E4 — suitable for mechanics and DIYers who need a direct-fit replacement for the listed Citroën and Peugeot models.
