Description
Socket for the right rear lamp for Citroën C4 3-door Coupe. The Condition Of The Bulbs Is Unknown. Supplied With A Section Of Wiring.
This used rear lamp socket is a direct-fit replacement for the right tail light assembly on Citroën C4 3-door Coupé models. Ideal for professional workshops and DIY mechanics looking to restore reliable rear lighting, the part is often searched by reference numbers 9646801677 and 6351T6. The unit includes a short piece of wiring and may come with bulbs whose condition has not been verified—inspect and test bulbs before final assembly.
Technical Information
- Manufacturer: Stellantis / Citroën
- Model: Citroën C4 (1st Generation) 3-Door Coupe
- Product Codes: 9646801677, 6351T6
- Other Numbers: Not Specified
Compatibility And Fitment
Designed for Citroën C4 3-door Coupé models of the first generation. Fits the right-hand rear lamp housing and mates with the original tail light connector. Verify fitment visually against the existing socket and reference numbers supplied with the vehicle when possible.
Installation Recommendations
- Park vehicle on a level surface and switch off ignition.
- Open boot and remove inner trim panels to access the tail lamp assembly.
- Unscrew or unclip the lamp unit retaining fasteners and carefully withdraw the assembly from the body.
- Unplug the original socket from the wiring harness, release any retaining clips, and remove the old socket.
- Fit the replacement socket into the lamp assembly, secure clips, and reconnect to the vehicle wiring harness.
- Install bulbs (verify correct bulb type per vehicle manual) and test all lamp functions—stop, tail, indicator, and reverse where applicable—before reassembling trim.
- Reinstall lamp unit and interior trim panels, tighten fasteners to secure fitment, and perform a final functional check.
Tip: When working on electrical connectors, avoid forcing brittle plastic tabs and clean any corroded terminals before reconnection. Use dielectric grease on contacts to reduce future corrosion.
Why The Part Most Commonly Fails
- Corrosion On Contacts: Moisture ingress causes poor contact and intermittent lighting.
- Heat Damage From Bulbs: Excessive heat or incorrect bulb types can deform or melt the socket plastic.
- Mechanical Wear Or Breakage: Plastic clips and pins age and can snap during removal or from vibration.
- Wiring Damage: Chafing or previous repairs can cause broken conductors or short circuits.
- Water Ingress Into Lamp Housing: Faulty seals allow water to reach the socket and bulbs, accelerating failure.
Additional Notes
Because the condition of the bulbs is unknown, replace or test bulbs before completing installation. Inspect the lamp housing seal and surrounding wiring for signs of water entry or damage. This replacement socket is suitable for professionals and competent DIYers; if the lamp wiring shows extensive corrosion, consider addressing the harness as well to ensure long-term reliability.
