Description
Complete lock set designed specifically for Peugeot 406. This kit provides a direct replacement for worn or damaged door locks and includes the ignition barrel plus two keys. Supplied under PSA reference codes 4162Z7 and 4162Z6, the set is aimed at professional mechanics and experienced DIYers who need a reliable, OE-referenced solution.
What’s Included
- Driver and passenger door lock assemblies
- Ignition barrel (steering column lock cylinder)
- Two keys included (see notes on cutting/programming below)
Key Features
- Direct-fit replacement for Peugeot 406 lock components (PSA parts 4162Z7, 4162Z6)
- Restores mechanical locking and ignition functionality
- Suitable for workshop fitment or competent DIY installation
Common Failure Symptoms And Causes
Lock and ignition barrels fail gradually or suddenly due to mechanical wear, corrosion, broken plastic components, or damage from forced entry and accidents. Typical symptoms include difficulty turning the key, stuck or loose key, doors not locking or unlocking properly, and intermittent central locking failure. Environmental exposure (moisture, salt) and heavy use accelerate wear.
Installation Notes
Basic replacement steps for an experienced mechanic or competent DIYer: remove the inner door trim and moisture barrier to access the lock assembly, disconnect linkage and any electrical connectors, unfasten the lock unit and fit the new assembly ensuring correct alignment of rods and actuators. For the ignition barrel, remove steering column covers, release the retaining clip or screws and withdraw the old barrel before fitting the replacement. Always verify smooth mechanical operation and test lock/ignition function before reassembling trims. Specific vehicles may require key cutting or immobiliser programming depending on the original key type.
Durability And Maintenance
Longevity depends on usage and environment. Regular lubrication of lock mechanisms with appropriate lock lubricant and avoiding forced operation of the key helps extend service life. Inspect for corrosion or play in linkages during routine maintenance.
Technical Information
- Manufacturer: PSA (Citroën/Peugeot)
- Model: Peugeot 406
- Product Codes: 4162Z7, 4162Z6
- Additional Numbers: Not specified
Before ordering, verify compatibility with your vehicle by checking the OEM codes and consulting a parts diagram or VIN lookup if uncertain. If you need assistance confirming fitment, contact a specialist or your local workshop with the PSA reference numbers.
