Description
Socket with bulbs for the left rear outer lamp Citroën C4 B7. Driver’s Side.
Product Overview
Direct-fit bulb socket assembly for the left outer rear lamp on Citroën C4 II (B7). Ideal for professional workshops and DIY mechanics searching by part numbers 9687312180 or 6350KS. The assembly secures the bulbs in the tail lamp housing, provides electrical contacts and ensures reliable rear light operation when installed correctly.
Key Features
- Direct replacement for the left rear outer lamp socket on Citroën C4 II (B7).
- Compatible with OE codes commonly referenced in repair manuals and parts listings: 9687312180, 6350KS.
- Designed to hold multiple rear lamp bulbs and provide electrical contacts for stop, tail and indicator functions depending on original lamp configuration.
- Simple mechanical fitment into the tail lamp housing; no body modification required.
Technical Information
- Manufacturer: Stellantis
- Model: Citroën C4 II (B7)
- Product Codes: 6350KS
- Other Numbers: 9687312180
How It Works
The socket assembly secures the lamp bulbs in the outer rear light cluster and provides the electrical contacts that transfer power from the vehicle wiring to the bulbs. A sound contact surface and correct fit prevent flicker and intermittent operation; the plastic carrier maintains bulb position and seals contacts from vibration and minor moisture.
Common Faults And Causes
- Corrosion On Contacts: Moisture ingress or condensation leads to oxidized contacts, causing poor connection, flicker or loss of function.
- Heat Damage: Overheated bulbs or poor ventilation can deform the socket or melt insulation around contacts.
- Mechanical Wear Or Broken Clips: Repeated lamp removal, impact or vibration can break retaining tabs, causing poor seating or intermittent contact.
- Water Ingress: Cracked lamp housings or worn seals allow water to reach the socket and corrode terminals.
Replacement Procedure
Typical replacement steps for a competent mechanic or experienced DIYer:
- Open the tailgate and access the lamp cluster from the luggage compartment by removing the trim or cover panels.
- Unscrew or unclip the lamp housing from the body to reach the bulb socket assembly.
- Disconnect the electrical connector from the socket (press the locking tab) and remove the socket by rotating or releasing retaining clips as per original design.
- Fit the new socket into the lamp housing ensuring correct orientation and secure all clips/retainers.
- Reconnect the electrical connector and reinstall the lamp housing and interior trim.
- Test all rear lamp functions (tail, brake, indicator, reverse if applicable) before finishing.
Installation Recommendations
- Work In A Dry Environment: Avoid installing with visible moisture inside the lamp or on contacts.
- Inspect The Lamp Housing And Seals: Replace cracked housings or worn seals to prevent repeat failure.
- Use Correct Bulb Types: Ensure bulbs match the vehicle specification to avoid excessive heat or incorrect current draw.
- Clean Connectors: Remove corrosion from mating plugs with appropriate contact cleaner before fitting the new socket.
- Safety: Disconnect the battery or ensure lights are switched off when handling electrical connectors to prevent short circuits.
Why Replace This Part
This socket is a wear-and-failure item in rear lighting systems. It is typically replaced when bulbs flicker, stop working intermittently, show signs of corrosion or when the lamp housing is opened for other repairs and a damaged socket is discovered. Replacing a faulty socket restores reliable electrical contact and prevents further electrical issues in the rear lighting circuit.
