Description
Left Rear Lamp For CITROËN C4 3-Door Coupé Without Socket With Bulbs
Product Overview
High-quality left rear lamp assembly designed for the Citroën C4 3-door Coupé (C4 I). This tail light replaces the damaged or cracked original unit and restores correct rear lighting functions including stop, tail and indicator lights where applicable. The part is often searched by OEM numbers 9646801777 and 6350T6 — enter these codes when looking for a direct replacement.
Why Choose This Part
Designed for professional fitment by mechanics and for experienced DIYers, this lamp offers a direct-fit solution to common rear light damage. It is ideal when the lens is cracked, mounting tabs are broken, or internal reflector surfaces are degraded. Replacing the complete assembly is typically faster and more reliable than attempting repairs to a damaged housing.
Technical Information
- Manufacturer: Stellantis (Citroën)
- Model: Citroën C4 3-Door Coupé (C4 I)
- Product Codes: 9646801777, 6350T6
- Other Numbers: —
Installation Recommendations
Recommended for experienced technicians or competent DIY mechanics. Typical replacement steps:
- Open the boot/trunk and remove the inner trim to access the lamp mounting area.
- Unscrew the securing bolts and carefully release any plastic clips holding the lamp.
- Disconnect the electrical connector(s) and remove the old assembly.
- Fit the new lamp, reconnect the wiring and secure all fasteners. Ensure gaskets/seals seat correctly to prevent water ingress.
- Test all light functions (tail, brake, indicator, reverse if applicable) before reassembling the trim.
Always follow vehicle manufacturer’s procedures and use correct tools. If uncertain about electrical connections or sealing, have the unit fitted by a professional.
Reason Why The Part Most Often Fails
- Water Ingress: Cracked lens or degraded seals allow moisture to enter, causing corrosion and electrical faults.
- Impact Damage: Rear collisions or minor bumps commonly crack the housing or break mounting tabs.
- Ageing And UV Degradation: Prolonged sun exposure causes lens clouding and plastic embrittlement.
- Connector Corrosion Or Wiring Damage: Corroded contacts or rodent damage to wiring can interrupt signals.
Fitment Notes
Fits Left Side (Driver Side For Left-Hand Drive Vehicles) Of Citroën C4 3-Door Coupé (C4 I). The part is commonly identified by the product codes listed above — searching by these codes increases the chance of finding the correct unit quickly.
Additional Tips
- Check mounting tabs and surrounding sheet metal for hidden damage after removal; broken mounts can cause poor alignment and rattling.
- Replace worn or brittle seals to maintain a watertight fit and extend service life.
- Verify bulb/socket condition during replacement. If sockets are corroded, replace them to ensure reliable contact.








