Description
Third brake light with washer nozzle for Citroën C1, Peugeot 107 and Toyota Aygo. This is a used part; the rubber seal may leak, in which case it needs to be sealed with silicone.
Product Overview
High-mounted third brake light (center high-mounted stop lamp) with integrated washer jet, suitable for hatchback models Citroën C1, Peugeot 107 and Toyota Aygo. This used assembly is an economical replacement for a damaged or non-functioning third brake light and is often searched by part numbers 1606372780 and 6351W4, making it easy to find via Google or parts catalogs.
Function And Benefits
The third brake light provides an additional, elevated stop lamp that improves visibility to drivers behind the vehicle and helps reduce rear-end collisions. The integrated washer nozzle keeps the lens clean for maximum light output. Replacing a faulty unit restores legal compliance and safety while maintaining factory appearance.
Compatibility And Typical Applications
Fits Citroën C1, Peugeot 107 and Toyota Aygo (first-generation hatchbacks). Many buyers search by OEM codes 1606372780 or 6351W4 when looking for this specific unit.
How To Replace
Replacement is straightforward for experienced DIYers and professional mechanics. Typical steps:
- Open the rear hatch and remove the interior trim panel covering the upper tailgate area.
- Disconnect the electrical connector for the third brake light and washer nozzle.
- Remove the fasteners (clips/screws) securing the lamp assembly to the tailgate.
- Carefully remove the old unit from the tailgate, transfer any needed grommets or trim, and inspect the mounting surface.
- Fit the replacement unit, ensuring the rubber seal sits evenly. If the seal shows gaps or damage, apply a suitable silicone sealant to prevent leaks.
- Reconnect the electrical plug, test the brake light and washer nozzle function, then reassemble the trim.
- Inspect The Rubber Seal: Because this is a used part, carefully check the rubber gasket for hardening or cuts. If the seal leaks, apply automotive-grade silicone to ensure watertight installation.
- Electrical Check: Verify that the brake lamp filament/LED and washer nozzle operate before final assembly.
- Careful Handling: Avoid touching the lamp lens with abrasive materials; preserve the paint and trim when removing and refitting panels.
- Use Proper Tools: Trim removal tools reduce risk of broken clips and scratched panels.
- Manufacturer: Stellantis
- Model: Citroën C1, Peugeot 107, Toyota Aygo
- Product Codes: 1606372780
- Additional Numbers: 6351W4
Recommended For: Mechanics and competent DIY enthusiasts. Use proper trim tools to avoid damaging interior panels.
Installation Recommendations
Why This Part Fails
The most common causes of failure are water ingress due to degraded or misaligned seals, impact damage from rear collisions, and electrical connector corrosion. Washer nozzle blockages or damage can also reduce cleaning effectiveness, causing a dirty lens and reduced light output. As this is a used unit, prior age and exposure to the elements increase the chance of leaks or worn seals.
Technical Information
Notes For Buyers
This item is a used original equipment part. Carefully review the photos (if provided) and inspect the rubber seal condition upon receipt. Re-sealing may be required to guarantee watertight fit. Searching by the OEM codes 1606372780 or 6351W4 will help you quickly confirm fitment for compatible vehicles.
