This complete lock kit is a practical replacement for Citroën Xsara vehicles and contains the two front door locks, the fuel filler cap lock and the ignition barrel, supplied with a single key. The kit is ideal for workshops and competent DIYers who need a keyed-alike solution that restores mechanical security and central locking function without the need for additional cutting or programming when the supplied key matches the set.

Technical Information

• Manufacturer: Stellantis / Citroën
• Model: Citroën Xsara (applicable from 2002)
• Product Codes: 4162Z5, 4162Z4
• Other Numbers: 4162Z4, 4162Z5, CITROEN XSARA

Function And Benefits

The set replaces the main mechanical locking points and ignition barrel: it secures the driver and passenger doors, protects the fuel filler, and restores ignition switch operation with one common key. Benefits include simplified key management, renewed mechanical reliability, and compatibility with standard door and ignition hardware used on the Xsara range.

Typical Causes Of Failure

Locks and ignition barrels typically wear out from long-term use and exposure: internal tumblers and levers suffer abrasion, plastic guide parts become brittle, springs weaken, and moisture or corrosion causes seizing. Common triggers on older Xsara cars are rusted or frozen mechanisms, worn or bent keys, water ingress into door cavities, and mechanical damage from forced entry or impact.

Installation Recommendations

For safe and reliable replacement follow these steps: disconnect the vehicle battery before working on the ignition barrel; remove the interior door cards to access the lock mechanism; disconnect electrical connectors and linkage rods carefully; unfasten mounting screws and withdraw the old lock assembly; transfer or replace any retained clips or rods and fit the new lock in reverse order, ensuring rods and linkages are correctly aligned and free-moving. Apply a light graphite or silicone-based lock lubricant after installation—avoid oil-based lubricants that attract dirt. If one door lock is stiff, free it before fitment by applying penetrating spray and gently operating the mechanism; do not force a stuck lock as internal parts can break. Check that the supplied key operates all locks smoothly before reassembling trim panels.

Practical Notes

Because one lock in this kit may require freeing up, inspect and, if necessary, clean or lubricate linkages and striker plates to ensure smooth operation. If the vehicle has aftermarket alarm or central locking modules, verify electrical connections after mechanical replacement. For workshop use, keep the original lock core if recoding or exact key reproduction is required.

This lock set is designed for Citroën Xsara vehicles and includes the essential mechanical locking components needed to replace worn or damaged door locks and the ignition barrel. Commonly searched by product codes 4162RY and 4162Z4, it is suitable for professional mechanics and DIY enthusiasts looking for a direct replacement.

What’s Included

• Driver door lock
• Passenger door lock
• Fuel filler flap lock
• Ignition barrel (ignition switch cylinder)
• One key (1x key)

Compatibility And Application

Intended for Citroën Xsara models. Always verify fitment by matching the product codes 4162RY or 4162Z4 with the part you are replacing. Many buyers search using these product codes, so keep them handy when ordering.

Common Failure Modes

Locks and ignition barrels typically fail due to mechanical wear of tumblers or wafers, corrosion from moisture, broken or bent keys, or seized linkages and actuators. Symptoms include difficulty turning the key, doors not locking/unlocking, or intermittent operation.

Replacement And Installation

1. Door locks: remove the interior door card to access the lock mechanism; disconnect linkages and any electrical connectors; unbolt and replace the lock assembly; reconnect and test operation before reassembling the door panel.
2. Ignition barrel: disconnect the battery, remove the steering column covers, release the retaining clip or screw and slide out the cylinder; install the new barrel and verify that the steering lock and ignition switch positions function correctly.
3. Use appropriate tools and follow vehicle-specific repair manuals. A locksmith or experienced mechanic can cut the supplied key to match the new locks if needed.

Benefits For Mechanics And DIYers

This complete set simplifies repairs by replacing multiple worn components at once, reducing diagnostic and labor time while ensuring consistent mechanical keying across doors and ignition. Ideal for workshop use and home repairs where matching mechanical locks are required.

Technical Information

• Manufacturer: PSA Citroën / Peugeot
• Model: Citroën Xsara
• Product Codes: 4162RY, 4162Z4
• Additional Numbers: 4162RY, 4162Z4

Complete Lock Set for Citro&ebne;n Xsara, including driver and passenger door locks, fuel flap lock and ignition switch, supplied with two keys. This compact kit is designed as a direct replacement for worn or damaged locking components and is intended for use by professional technicians and experienced DIY enthusiasts. Reference part number: 4162Z5.

Key Features

• Includes Door Locks For Driver And Passenger
• Includes Fuel Flap Lock
• Includes Ignition Switch / Barrel
• Supplied With Two Keys (2x)
• OEM Reference Code: 4162Z5 (Verify Fitment Before Installation)

Function And Common Failure Modes

Lock units secure vehicle access points and the ignition system. Common causes of failure include mechanical wear of tumblers and linkages, corrosion from moisture ingress, broken plastic components in the actuator or latch assembly, and key barrel wear. Symptoms often include difficulty turning the key, intermittent locking/unlocking, or a complete inability to lock or unlock the door or fuel flap.

Replacement Guide

Replacement typically requires removal of the interior door trim to access the lock mechanism, disconnecting actuator linkages, and unbolting the lock assembly. For the ignition switch, disconnect the battery, remove steering column covers and extract the ignition barrel following vehicle-specific procedures. After fitment, ensure mechanical linkages are correctly adjusted and electrical connections (if present) are secure. If unsure, consult a service manual or a professional technician.

Installation Frequency And Maintenance

There is no fixed replacement interval; service life depends on usage and exposure to the elements. Regular lubrication of mechanical linkages and inspecting seals around door and fuel flap areas can extend service life. Replace the set if keys show excessive wear or if locking operation becomes unreliable.

Technical Information

• Manufacturer: PSA Group (Citro&ebne;n / Peugeot)
• Model: Citro&ebne;n Xsara
• Product Codes: 4162Z5
• Additional Numbers: Not Provided

Always verify the part number (4162Z5) against your vehicle identification details before ordering to ensure correct fitment. If in doubt, contact a parts specialist or consult the vehicle’s parts catalog.