Description
Right rear lamp for Citroën C4 3‑door Coupé. Without Socket, With Bulbs.
Product Overview
Right rear lamp assembly designed for Citroën C4 3‑door Coupé (C4 I). This used replacement lamp comes without the socket but is supplied with bulbs, making it a practical option for workshops and DIY enthusiasts who need a direct-fit rear light that restores all rear lighting functions: tail, brake, indicator and reversing light (depending on vehicle equipment).
Function And Features
The lamp provides rear illumination and signalling: tail light, brake light and turn indicator. It is a complete outer body unit for the right rear corner of the vehicle and includes the lens, housing and bulbs. Note that the unit is supplied without the bulb holder/socket, so installation requires careful seating of the supplied bulbs and secure connection to the vehicle wiring harness.
Technical Information
- Manufacturer: Stellantis (Citroën)
- Model: Citroën C4 3‑Door Coupé
- Product Codes: 9646801677, 6351T6
- Other Numbers: 6351T6 (alternate format)
Installation Recommendations
Recommended For Auto Technicians And Competent DIYers. Before starting, switch off ignition and exterior lights. It is advisable to disconnect the negative battery terminal to avoid short circuits while handling electrical connections. Access the lamp from inside the luggage compartment by removing the trim or access panel. Unscrew the mounting fasteners, gently pull the lamp assembly outwards, and disconnect the electrical connector. Fit the new lamp by reconnecting the wiring harness, ensuring bulbs are correctly seated, and secure the unit with the original fasteners. Check and replace any damaged seals or gaskets to ensure watertight installation. After fitting, test all light functions (tail, brake, indicator, reversing) before finishing reassembly.
Most Common Failure Reasons
Lamps on this position commonly fail due to:
- Water Ingress And Condensation: Damaged seals or cracked lens allow moisture to enter, causing corrosion and short circuits.
- Impact Or Collision Damage: Rear corner impacts often crack the lens or break mounting tabs.
- Connector Corrosion Or Loose Contacts: Corroded pins lead to intermittent or non‑functional lights.
- Bulb Failure: Filament bulbs reach end of life earlier than the housing and will need replacement.
- Mechanical Wear Of Mounting Points: Plastic clips or tabs can break when removing/installing the lamp repeatedly.
Practical Tips
- Inspect The Wiring Connector For Corrosion And Clean Contacts Before Reinstallation.
- Replace Seals Or Apply Suitable Sealant If Evidence Of Moisture Is Present.
- Handle Bulbs With Clean Gloves Or A Cloth To Avoid Finger Oils That Shorten Bulb Life.
- Keep Original Fasteners And Mounting Clips Or Replace Them If Damaged To Ensure Secure Fitment.
