Description
Throttle body housing for 2.2 16V engines for Citroën and Peugeot vehicles.
High-quality replacement throttle body manufactured by Magneti Marelli, designed for select Citroën and Peugeot models. This unit controls intake airflow to the engine and restores correct idle, throttle response and drivability when the original part is worn or contaminated. Ideal for professional workshops and experienced DIY mechanics searching by part number (163615) or vehicle fitment. Reliable fitment and straightforward replacement make this part a practical solution for common air intake control issues on compatible PSA vehicles.
Function and Symptoms
The throttle body meters the amount of air entering the engine according to driver input and ECU commands. Modern units often include an electronic actuator and position sensor. Common symptoms of a faulty or contaminated throttle body include unstable or high idle, poor acceleration, hesitation, stalling at idle, limp-home mode and an illuminated engine warning lamp.
Technical Information
- Manufacturer: Magneti Marelli
- Model: Citroën C8; Peugeot 406, Peugeot 407, Peugeot 607, Peugeot 807
- Product Codes: 163615
- Additional Numbers: Stellantis Citroën Peugeot 163615 NFP
How To Replace
- Work Safely: Park on level ground, engage the handbrake and disconnect the negative terminal of the battery to avoid electrical shorts and to allow systems to reset.
- Access: Remove the intake air duct and any engine covers to access the throttle body mounted on the intake manifold.
- Disconnect: Carefully unplug the electrical connector(s) and any vacuum lines attached to the throttle body. Mark hoses if needed to ensure correct reconnection.
- Remove: Unbolt the throttle body from the intake manifold and remove the old gasket or seal. Inspect mating surfaces and clean if necessary.
- Install: Fit a new gasket, position the replacement throttle body and tighten fasteners to the manufacturer’s specified torque values.
- Reassemble: Reconnect electrical connectors and vacuum lines, reinstall the air intake duct and any removed covers.
- Initialization: Some vehicles require throttle adaptation or idle relearn after replacement. Use an appropriate diagnostic tool to perform the throttle adaptation procedure or follow the vehicle manufacturer’s relearn steps.
Installation Recommendations
- Always replace the gasket or sealing ring when installing the new throttle body to prevent air leaks.
- If possible, perform a throttle relearn/adaptation with a diagnostic tool to ensure correct idle and response.
- Avoid using aggressive cleaners on electronic components; clean only the mating surfaces and throttle plate area with suitable cleaners if planning to reuse the original unit.
- Check related items such as intake hoses, vacuum lines and intake manifold for leaks or damage that may affect performance.
- Follow all safety recommendations and manufacturer procedures when working on the engine; consult the vehicle repair manual for torque specs and specific instructions.
Reason For Common Failures
- Carbon and Oil Deposits: Over time, carbon buildup on the throttle plate and bore reduces movement and airflow, causing poor idle and response.
- Electronic Failure: Internal actuators or position sensors can degrade electrically, producing erroneous signals or loss of control in drive-by-wire systems.
- Vacuum Leaks: Cracked intake hoses or failing gaskets allow unmetered air that affects throttle behaviour and idle stability.
- Wear And Contamination: Exposure to particulates, oil vapors from the crankcase ventilation system or coolant (if applicable) can accelerate wear.
- Mechanical Damage: Physical damage during previous service or from foreign objects can impair proper operation.
This throttle body is a direct-fit option identified by product code 163615 for a selection of Citroën and Peugeot models. Search by the part number for quick identification and ensure you follow recommended installation and adaptation steps for reliable operation and long service life.
