Description
Socket with bulbs for the left outer rear lamp of Citroën C4 B7 second generation. Lamp on the driver side. Supplied with a short piece of wiring.
This replacement bulb holder assembly is designed for mechanics and DIY car owners who need a reliable, ready-to-fit part for the left outer rear lamp on Citroën C4 II. Supplied with bulbs and a short wiring pigtail, the unit simplifies lamp replacement and reduces time in the workshop. Commonly searched under part number 6350KS, this socket is ideal when the original holder shows signs of corrosion, melted plastic or intermittent contact.
Technical Information
- Manufacturer: Citroën (Stellantis)
- Model: Citroën C4 II (B7, Second Generation)
- Product Codes: 6350KS
- Other Numbers: —
Fitment
Designed for left outer rear lamp (driver side) of Citroën C4 II (B7, second generation). Check vehicle model and lamp position before installation. Often used on C4 produced in the 2010–2018 model years.
Function and Description
The socket assembly holds the rear lamp bulbs and provides the electrical connection between the vehicle wiring harness and the lamp functions (tail/brake/indicator depending on the lamp variant). The included wiring pigtail allows plug-and-play replacement without extensive rewiring.
Common Faults And Why The Part Fails
- Corrosion of contacts due to moisture ingress, causing intermittent or no contact.
- Overheating or melted plastic around the socket from high-resistance connections or oversized bulbs.
- Mechanical damage from shocks, vibration or improper bulb fitting.
- Wiring abrasion or broken conductors in the pigtail area leading to loss of function.
Installation Instructions
- Park the vehicle on a stable surface and switch off all lighting circuits.
- Access the rear lamp assembly from the boot/boot side trim or remove the lamp cluster fasteners as required by the vehicle.
- Disconnect the battery negative terminal to avoid shorts while working on the wiring.
- Unplug the original bulb holder from the lamp cluster and remove any retaining clips or screws.
- Replace the socket assembly with the supplied unit, connect the wiring pigtail and secure all clips.
- Fit bulbs into the new socket, reassemble the lamp cluster and reconnect the battery.
- Test all rear lamp functions (tail, brake, indicator, reverse where applicable) before finishing.
Recommendations For Mounting
- Use dielectric grease on contacts to reduce corrosion and improve electrical contact.
- Ensure bulbs are the correct type and rating for the lamp to avoid overheating.
- Secure wiring to prevent chafing and avoid tight bends near the socket.
- Check lamp housing seals and gaskets for damage to prevent future moisture ingress.
Why Replace The Socket
Replacing the socket restores reliable electrical contact and lamp function, eliminates flickering or non-working lights caused by corroded or melted holders, and is often quicker and more economical than repairing damaged wiring or lamp clusters. For workshop efficiency, keep common lamp socket part numbers (like 6350KS) in inventory to reduce vehicle downtime.
