Description
This high-mounted third brake light (high-mounted stop lamp) is a direct-fit replacement for the Citroën C3 Picasso, part code 6351GK. Frequently searched by part number, this used unit is suitable for professional auto technicians and DIY car owners who need a dependable restoration of rear brake signaling and road safety.
Key Benefits
– Restores clear brake signalling to following traffic, improving safety during deceleration and stops.
– Direct compatibility with Citroën C3 Picasso models fitted to PSA Peugeot Citroën specifications.
– Ideal for mechanics and home mechanics looking for a part-by-part replacement identified by part code 6351GK.
– Simple swap-out procedure keeps workshop time to a minimum.
Installation & Fitment
Removal and installation are straightforward for anyone with basic mechanical skills. Typical steps:
- Open the tailgate and remove the interior trim panel securing the high-mount lamp (usually clips or a few screws).
- Unscrew the lamp assembly from the tailgate, disconnect the electrical connector and remove the old unit.
- Fit the replacement lamp, connect the wiring harness, test the brake light function, and re-fit the trim panel.
No specialized tools are normally required, but a trim tool and a small set of screwdrivers will make the job faster and reduce the risk of panel damage. If corrosion or damaged fasteners are present, additional tools or minor repairs may be necessary.
Common Failure Causes
Typical reasons this lamp may require replacement include bulb or LED failure, water ingress and condensation, cracked lens or housing after impacts, connector corrosion, and wiring damage from wear or shock. Regular inspection of seals and connectors helps prevent premature failures.
When To Replace
Replace the third brake light if it fails to illuminate when braking, flickers intermittently, shows visible damage or persistent condensation inside the lens, or if vehicle diagnostics indicate an exterior lamp fault. Because this lamp is a key safety device, prompt replacement is recommended whenever its operation is compromised.
Technical Information
- Manufacturer: PSA Peugeot Citroën
- Model: Citroën C3 Picasso
- Product Codes: 6351GK
- Other Numbers: N/A
This unit is sourced as a used replacement part suitable for vehicles compatible with the PSA Peugeot Citroën specification. Its quality and performance were thoroughly tested, offering technicians and independent installers a reliable option to restore brake-light function and increase on-road safety.







