Part description

The used Magneti Marelli 163615 throttle valve is an important part of the intake system, which is involved in the correct dosing of air into the engine. This car part is intended for Citroën and Peugeot cars and is primarily searched for by the original product number, which makes it easier to identify the correct part for repair or replacement.

The part is suitable for mechanics and do-it-yourselfers who are looking for a functional replacement solution for the original worn or non-functional throttle valve. For these parts, both the overall condition of the body and the connectors and moving parts are important, because their correct function has an effect on the engine’s operation, response to gas and idling stability.

Technical information

• Manufacturer: Magneti Marelli
• Model: Citroën C8, Peugeot 406, Peugeot 407, Peugeot 607, Peugeot 807
• Other numbers: 163615, NFP

Product codes

Product codes: 163615, NFP

Installation recommendations

Generally/typically for this type of part, before assembly it is necessary to carefully compare the used part with the original piece and verify the conformity of all connection points, connectors, body shape and mechanical parts. The exact replacement procedure may vary depending on the specific design of the car and engine.

1) Before assembly

• Check whether the throttle body is mechanically damaged.
• Compare the part number with the old part.
• Check the condition of the connector, the contact surfaces and the mobility of the flap.
• Check the part for significant dirt or deposits that could affect function.

2) Necessary tools and materials

• A common set of hand tools
• Screwdrivers and gola set
• Clean rags or shop towels
• A suitable cleaner for the mechanical parts of the suction
• Protective gloves

3) Step-by-step assembly procedure

1. Turn off the ignition and secure the vehicle against movement before starting work.
2. Disconnect the battery if it is normal service practice for the vehicle.
3. Access the throttle by removing the parts that prevent access.
4. Disconnect the electrical connector carefully so as not to damage the fuse of the connector.
5. Undo the fasteners and remove the original throttle body.
6. Clean the bearing surface from old dirt and deposits.
7. Compare the old and new part one more time just before assembly.
8. Install the used throttle valve in its original position and seat it evenly.
9. Reconnect the electrical connector and check that it is properly secured.
10. Reinstall all removed intake parts and covers.
11. Connect the battery and perform a basic wiring check.
12. After starting, observe the engine and verify that the throttle response corresponds to normal operation.
• 4) Post-assembly checks and test drive/function verification
  • Check if the motor keeps running stable.
  • Verify that the connector is firmly in place and is not pinching or pressing anywhere.
  • Check for any unusual suction or gas response after installation.
  • Do a short test drive and observe the smoothness of the acceleration.

  5) The most common assembly mistakes + how to avoid them

  • Insufficient parts comparison – always compare the part number, body shape and connector.
  • Contaminated bearing surface – clean it thoroughly before assembly.
  • Damage to the connector – disconnect and connect the connector without using force.
  • Overview of mechanical damage – check the entire body and moving parts before assembly.
  • Incorrect seating of the part – during assembly, make sure it sits flat and is properly secured.

  Reasons why the part is damaged

  • Normal wear and tear during long-term operation of the vehicle.
  • Clogging with dirt and carbon, which limits the smooth movement of the damper.
  • Moisture and corrosion in the area of connectors or electrical parts.
  • Damage due to unprofessional disassembly or assembly.
  • Fluctuations in the electrical supply which can affect the function of the throttle control.
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