Right rear fog lamp Peugeot 407 SW 9646507380 6351T4

Description

Right rear fog light for PEUGEOT 407 SW cars
Complete with socket, functionality of the bulb itself not guaranteed

Part description

This right rear fog light is intended for the Peugeot 407 SW and is supplied as a set including a base. It is a practical choice when replacing the light when it breaks, the attachment is damaged or when there is a leak in the lamp. Thanks to the mentioned codes, you can easily find the part in the catalog and according to the marking on the original light.

Note: this is a used part – the functionality of the bulb itself is not guaranteed, so it is advisable to check the bulb before assembly or replace it immediately.

Technical information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Peugeot 407 SW
• Other numbers: 6351T4

Product codes

• Product codes: 9646507380, 6351T4

Installation recommendations

Generally/typically for the rear fog light, the replacement takes place after dismantling the access in the rear part of the body and then disconnecting the connector. The exact procedure may vary depending on the specific model of the car.

1) Before assembly (checks of used part)

• Compare codes 9646507380 / 6351T4 with the old part and check the identical design.
• Check that the light is complete including the base and that the locks/handles are not damaged.
• Inspect sealing surfaces and cover for cracks and leakage marks.
• Check the condition of the contacts in the socket (oxidation, burnt pins).
• Be aware that the bulb may not be functional – check outside the vehicle or prepare a replacement.

2) Necessary tools and materials (in general)

• Basic set of screwdrivers / nuts according to design
• Plastic pry bar for removing upholstery/covers (if necessary)
• Cleaning agent for electrical contacts (as needed)
• Clean cloth or gloves

3) Step-by-step assembly procedure

1. Turn off the ignition and lights.
2. Provide access to the rear of the light (typically through a service hole / cover in the trim).
3. Disconnect the electrical connector/socket from the original light.
4. Unfasten the light fastening (screws/nuts or locks depending on the design).
5. Carefully remove the old light so as not to damage the surrounding plastics and sealing surfaces.
6. Clean the seating surface and check that there are no remaining dirt that could cause a leak.
7. Insert the new (used) light into the hole and check for proper seating.
8. Secure the light using the original method of fastening and tighten with sensitivity (without stretching the plastic).
9. Connect the socket/connector and check that the connection is tight.
10. Refit the covers/trims if removed.
• 4) Post-assembly checks and functional test verification
  • Check the function of the rear fog light (and possibly other lights in the section).
  • Check that the light fits correctly and that there is no play in the mounting.
  • After the first ride or after rain, check that there is no moisture inside the light (a sign of a leak).

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

  • Forgotten or wrongly fitted gasket → always clean the contact surface and check the contact of the light.
  • Broken handles during disassembly → proceed carefully, do not pry over the edge.
  • Not solving the oxidation of the contacts → in case of light problems, clean the contacts and check the socket.
  • Relying on an old light bulb → since the functionality of the light bulb is not guaranteed, test it in advance.

  Reasons why the part is damaged

  • Cracking of the cover after impact or careless handling in the luggage compartment.
  • Leakage and condensation due to a damaged seal or a crack in the light body.
  • Damage to the attachment (broken locks, cracked holders) during disassembly or after vibrations.
  • Electrical problems in the socket – oxidation of contacts, transient resistance and subsequent overheating.
  • Improper washing/chemistry – aggressive agents can damage plastics and seals over time.