Description
Electric fuel filler flap lock for Citroën C5 and Peugeot 407 vehicles.
Overview
This electric fuel filler flap lock is a direct-fit replacement designed for Citroën C5 and Peugeot 407 models. It replaces the locking mechanism that secures the fuel flap and integrates with the vehicle’s central locking system, allowing the fuel flap to lock and unlock together with the doors. Frequently searched by part number 661520, this unit is suitable for both professional workshops and experienced DIY mechanics who need a reliable replacement for a faulty fuel flap lock.
Features And Benefits
- Direct-fit electric lock designed for Citroën and Peugeot applications.
- Restores normal central locking operation of the fuel flap.
- Improves security of the fuel filler against tampering and accidental opening.
- Economical replacement that eliminates the common faults associated with worn actuators or corroded mechanisms.
Compatibility
- Citroën C5 (I and II)
- Peugeot 407
- Often Listed Under Part Number: 661520
How It Works And Function
The unit is an electrically driven lock/actuator mounted behind the fuel filler flap. When the vehicle is locked or unlocked via the central locking system, the actuator receives a signal to engage or release the latch, securing or releasing the fuel flap. Failure of the lock typically results in the fuel flap not staying closed, not unlocking with central locking, or producing a clicking/noise without movement.
Replacement And Installation
Replacement can usually be completed with basic tools in a workshop or by an experienced DIYer. Typical access is obtained by opening the fuel flap and removing the small retaining screws or clips, or by removing the inner trim in the boot/wheel arch area to reach the actuator from the inside. Steps:
- Disconnect the negative battery terminal before starting work to avoid short circuits and accidental operation.
- Open the fuel flap and remove visible screws or release the locking clips.
- If necessary, remove the inner trunk or wheel arch trim to gain access to the lock assembly.
- Disconnect the electrical connector and remove the fixings holding the lock in place.
- Fit the new lock, secure all fasteners, reconnect the electrical connector and reassemble trim parts.
- Reconnect the battery and test the lock operation using the central locking and manual release.
Technical Information
- Manufacturer: Stellantis
- Model: Citroën C5, Peugeot 407
- Product Codes: 661520, NFP
- Additional Numbers: Not Available
Recommendations For Installation
- Always disconnect the battery before working on electrical components.
- Check the wiring harness and connector for corrosion or damage before fitting the new unit.
- Verify fuse condition and central locking function if the new lock does not respond.
- After installation, cycle the central locking several times and test the manual release to confirm correct operation.
- Use appropriate trim tools to avoid breaking clips when removing interior panels.
Why The Part Most Commonly Fails
- Corrosion and Water Ingress: Moisture can corrode contacts and mechanical components, causing the actuator to seize or the electrical connection to fail.
- Mechanical Wear: Repeated use over many years can wear gears and latches inside the actuator.
- Debris And Foreign Particles: Dirt or grit in the flap area can jam the latch mechanism.
- Electrical Faults: Damaged wiring, connector corrosion, or blown fuses can prevent the unit from receiving power.
This replacement unit provides a cost-effective way to restore secure and reliable operation of the fuel filler flap on compatible Citroën and Peugeot vehicles. Always follow manufacturer safety guidelines and, if unsure, seek assistance from a qualified workshop.
