Description
Lock set for CITROËN C4 II B7 vehicles. Driver door lock plus ignition barrel. 2 x Keys
Overview
High-quality lock set intended for Citroën C4 II (B7) models. The kit includes the driver door lock mechanism and the ignition barrel together with two keys. This assembly is commonly used by professional mechanics and DIY enthusiasts when replacing worn or damaged locks and ignition barrels. Common search terms include the part numbers 9673578480 and 4162PT, making this listing easy to find for technicians searching by code.
Technical Information
- Manufacturer: Citroën / Stellantis
- Model: Citroën C4 II (B7)
- Product Codes: 9673578480, 4162PT
- Additional Numbers: 4162PT, 9673578480
Included Components
- Driver Door Lock Mechanism
- Ignition Barrel (Ignition Switch Housing)
- 2 × Keys (blanks supplied; cutting and/or transponder cloning/programming may be required)
Compatibility
Designed for Citroën C4 II (B7) vehicles. Always verify the part numbers (9673578480 / 4162PT) against the vehicle’s existing components to confirm fitment.
Installation
Replacement of the driver door lock and ignition barrel typically follows these steps: remove interior door trim to access the lock mechanism; disconnect mechanical linkages and any actuators; unbolt and extract the old lock assembly; remove the steering column covers to access the ignition barrel if replacing the ignition unit; install the new lock and barrel, reconnect linkages and electrical connectors, and test mechanical function before reassembling trims. Keys supplied will usually require cutting, and if they contain a transponder chip, programming or cloning is necessary for engine immobilizer recognition.
Installation Recommendations
- Disconnect the battery before starting work to avoid short circuits and protect vehicle electronics.
- Use appropriate trim tools to prevent damaging interior panels.
- If keys require transponder programming, use a professional locksmith or workshop with PSA-compatible diagnostic equipment.
- After installation, verify smooth operation of door locking, central locking (if applicable), and ignition start sequence.
Most Common Failure Reasons
Door locks and ignition barrels commonly fail due to mechanical wear of tumblers and linkages, corrosion from moisture, accumulation of dirt and debris, broken or worn keys, and electrical faults in actuator or ignition switch contacts. Forced entry attempts or vandalism can also damage lock components.
Notes For Professionals and DIYers
Part numbers 9673578480 and 4162PT are frequently used in searches, so quoting these codes helps locate the correct replacement quickly. This kit is suitable for garages and experienced DIY mechanics familiar with door trim removal and ignition barrel replacement. Keys supplied may require cutting and potential transponder cloning/programming to match the vehicle immobilizer.
