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.

The locks play a vital role in vehicle security, preventing unauthorized access to the cabin and fuel tank. Over time, these components can wear out or become damaged due to frequent use, environmental exposure, or mechanical faults, making replacement necessary to maintain the safety and proper functioning of your vehicle.

Installing this lock set involves removing the interior door panels to access the lock mechanisms and ignition barrel. It is recommended for experienced mechanics or skilled DIY enthusiasts, as correct reassembly ensures smooth lock operation and reliable vehicle security.

Technical Information

• Manufacturer: PSA (Peugeot Société Anonyme)
• Model: Citroën Xsara, Xsara Picasso
• Product Codes: 4162Y9, 4162Z4
• Additional Numbers: NFP (No Further Production)

This lock set is an essential replacement part for restoring secure access to your Citroën vehicle. The product matches original equipment specifications, ensuring compatibility and durability. It is commonly sought after under the part numbers 4162Y9 and 4162Z4, making it easy to identify and order.

This complete lock set is designed for Citroën Xsara and Xsara Picasso vehicles. It includes driver and passenger door lock cylinders, fuel filler cap lock, and the ignition switch supplied with two matching keys. The kit restores security and reliable ignition operation, making it suitable for professional mechanics and DIY enthusiasts.

Key Features

• Complete kit: driver and passenger door lock cylinders, fuel cap lock, ignition switch and 2 matching keys.
• Direct-fit replacement compatible with OEM product codes 4162Y9 and 4162Z4.
• Restores door and fuel cap security and correct ignition operation.
• Supplied keys are mechanically cut to match the new cylinders.

Fitment

Compatible with Citroën Xsara and Xsara Picasso models. Always verify fitment with the vehicle VIN and the listed product codes before ordering. These parts are commonly searched by the part numbers 4162Y9 and 4162Z4.

Installation Notes

Replacing the door lock cylinders typically requires removal of the interior door panels to access the lock mechanisms. The ignition switch replacement generally requires removal of the steering column trim to access and remove the old barrel. Keys supplied are mechanically matched to the new locks. Vehicles equipped with transponder keys or immobilizer systems may require immobilizer reprogramming or key coding by a dealer or qualified locksmith.

Typical Failure Modes & Maintenance

Lock cylinders and ignition switches may fail due to normal wear, corrosion, contaminated or worn tumblers, water ingress, or mechanical damage. Symptoms include difficulty turning the key, intermittent starting or locking problems, loose or sticking locks. Replacing the complete set reduces the likelihood of mismatched components and recurring faults.

Technical Information

• Manufacturer: PSA (Citroën/Peugeot)
• Model: Citroën Xsara; Xsara Picasso
• Product Codes: 4162Y9, 4162Z4
• Other Numbers: 4162Y9|4162Z4, NFP

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