Description
Ignition barrel + 1 key for Peugeot 406
High-quality ignition barrel with one matching key designed for Peugeot 406. Ideal for mechanics and DIY enthusiasts who need a direct replacement part that restores reliable ignition operation and steering lock function. The unit is supplied ready to fit mechanically; where keys include an immobiliser transponder, additional programming may be required to fully enable engine start. Commonly searched by part code 4162R7, this ignition barrel is a practical solution for worn locks, broken keys, or mechanical failure of the switch assembly.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Peugeot 406
- Product Codes: 4162R7
- Other Numbers: NFP
Compatibility And Fitment
Designed for Peugeot 406 models. Fitment depends on steering column variant and immobiliser configuration. Suitable for vehicles using the standard Peugeot 406 ignition barrel layout. Check physical match with the original unit (mounting points, connector positions, barrel length) before installation.
Function
The Ignition Barrel Serves Several Functions: It Provides Mechanical Key Operation To Turn The Ignition Switch, Locks/Unlocks The Steering Column, And Interfaces With The Vehicle’s Electrical Ignition Circuit. When Supplied With A Key Containing A Transponder, The Key May Need Programming To Allow The Engine Immobiliser To Authorize Starting.
How To Replace
- Disconnect The Battery Before Starting Work To Avoid Short Circuits Or Damage To Electronic Components.
- Remove Steering Column Covers (Upper And Lower) To Access The Ignition Barrel.
- Locate And Remove The Retaining Screw Or Clip Securing The Barrel; Carefully Slide The Barrel Out.
- Disconnect Any Electrical Connectors Attached To The Barrel Or Ignition Switch.
- Install The New Barrel In Reverse Order: Insert Barrel, Secure Retaining Fastener, Reconnect Electrical Plugs, Replace Covers.
- If The Supplied Key Has A Transponder, Perform Key Programming Or Immobiliser Synchronisation As Required By The Vehicle.
- Reconnect Battery And Verify Proper Operation: Lock/Unlock, Ignition Positions, Engine Start.
Installation Recommendations
- Always Disconnect The Battery Before Removing The Ignition Barrel.
- If The Key Is Supplied Uncut, Have It Cut To The Original Key Code By A Qualified Locksmith Or Dealer.
- When A Transponder Key Is Present, Programming May Be Required; Use Appropriate Diagnostic Equipment For Immobiliser Initialization.
- Do Not Force The Barrel Or Key; Excessive Force Can Damage The New Lock Or Steering Column Components.
- Light Lubrication Of The Barrel With A Dry Graphite Or Manufacturer-Approved Lock Lubricant Can Improve Smoothness—Avoid Oil-Based Products That Attract Dirt.
Most Common Failure Reasons
- Mechanical Wear Of Tumblers And Internal Components Due To Heavy Use Over Time.
- Broken Or Worn Keys That Damage The Lock Profile.
- Corrosion Or Contamination Inside The Barrel From Moisture Or Dirt.
- Electrical Faults In The Ignition Switch Contacts (If Integrated) Causing Intermittent Starting Problems.
- Attempted Forced Entry Or Vandalism Leading To Physical Damage.
Included: Ignition Barrel + 1 Key.
Practical, direct-fit replacement that helps restore secure ignition and steering lock operation on Peugeot 406 vehicles. Suitable For Professional Workshops And Competent DIY Mechanics.
