Description
Overview
This is a used electric fuel filler cap lock designed for Citroën and Peugeot vehicles. It secures the fuel filler flap and prevents unauthorized access to the fuel tank. The unit is a direct replacement for the original part numbers listed below and is suitable for mechanics and confident DIY enthusiasts who need a reliable, cost-effective repair solution.
Key Benefits
- Direct fit for compatible PSA models (see Technical Information).
- Electric actuation for integration with central locking and vehicle electronics.
- Cost-effective replacement compared with new OEM parts.
- Restores fuel flap security and proper operation.
Common Causes Of Failure
Fuel filler locks commonly fail due to mechanical wear, corrosion, water ingress, or actuator motor fatigue. Electrical faults such as connector corrosion or wiring damage can also prevent correct operation. Regular exposure to road salts and moisture accelerates degradation of moving components and electrical contacts.
Replacement And Installation
Replacement requires basic automotive tools and some familiarity with vehicle trim removal. Typical steps:
- Open the fuel flap and, if required, remove the inner access panel or trunk trim to reach the lock mechanism.
- Disconnect the electrical connector and any retaining clips or bolts securing the lock.
- Remove the old unit and fit the replacement, ensuring the actuator and latch engage correctly.
- Reconnect wiring, refit trim, and test operation via the central locking and fuel flap release.
If you are not comfortable with trim removal or electrical checks, have the part installed by a qualified technician to ensure correct operation and avoid damage to surrounding parts.
Maintenance Tips
- Keep the fuel flap area clean and free of debris to reduce wear.
- Check connectors for corrosion and treat contacts as needed with appropriate electrical cleaner.
- Inspect for water ingress after heavy rain or car washes; address seals and drainage paths if needed.
Technical Information
Manufacturer: Citroën, Peugeot
Model: C4 Picasso and other compatible PSA models
Product Codes: 9658236780, 9660019180, 661537, 661542
Additional Numbers: Not available
Compatibility And Fitment
Always verify the part numbers and vehicle fitment before ordering. This unit is listed against the product codes above; fitment can vary by model year, trim level and market. Use the vehicle VIN or consult a parts catalogue to confirm compatibility.
Condition Notice
This is a used electric fuel filler cap lock offered as a cost-effective replacement. It has been thoroughly tested to meet high standards of quality and reliability for used components. Please verify fitment and connector type before installation.








