Fitment And Function

This replacement bulb socket is intended for the left rear outer lamp mounted in the rear wing of the Peugeot 406 Combi (Estate). It holds the bulb and provides the electrical connection between the vehicle wiring harness and the tail light bulb. The part is frequently sought by part number 6350H5.

Technical Information

• Manufacturer: Stellantis (Peugeot/Citroën)
• Model: Peugeot 406 Combi (Estate) — Left Rear Outer Lamp
• Product Codes: 6350H5
• Other Numbers: NFP

Installation Recommendations

Recommended steps for replacement (general procedure):

• Disconnect the negative battery terminal before starting to avoid short circuits and to protect vehicle electronics.
• Open the tailgate/boot and remove the interior trim to access the rear lamp assembly.
• Unscrew or unclip the lamp assembly retaining fasteners and carefully pull the lamp out of the wing to access the bulb holder.
• Disconnect the wiring connector, remove the old bulb and release the socket from the lamp harness.
• Install the new socket, connect the wiring, and fit fresh bulbs (bulbs are recommended to be replaced together with the socket to ensure reliable contact).
• Test all lamp functions (tail, stop, indicator, and reverse if applicable) before refitting the lamp assembly and trim.
• Use a small amount of dielectric grease on contacts to reduce corrosion and improve long-term conductivity. Tighten fasteners to manufacturer specification and avoid overtightening plastic clips.

Common Failure Causes

• Corrosion from moisture ingress leading to poor contact or open circuits.
• Heat damage or melting caused by excessive bulb temperature or bad contact/arcing.
• Mechanical wear or brittle plastic that cracks after many years or repeated bulb changes.
• Damaged or chafed wiring in the harness causing intermittent or permanent failure.
• Oxidation of metal contacts producing increased resistance and spot heating.

Practical Tips For Mechanics And DIYers

• Always replace bulbs when fitting a new socket to avoid future arcing and to ensure consistent heating characteristics.
• Check surrounding wiring and lamp gaskets for signs of water ingress; replace seals if necessary to prevent repeat failure.
• Keep the area clean and use dielectric grease on contacts to extend service life.
• Search by part number 6350H5 when ordering to speed up finding the correct replacement.

This left rear outer lamp is a direct-fit replacement for the Peugeot 406 Combi (Estate) and is ideal for professional workshops and independent DIY mechanics. Supplied without bulb holders, it lets you reuse original sockets if intact or fit new holders and bulbs as needed. The part is commonly searched by product code 6350H5, so adding the code to your search will speed up finding the correct unit.

The lamp restores all main rear-light functions on the outer wing: tail light, brake light and turn signal (indicator). Because it is mounted in the rear wing, it is more exposed to road debris and minor impacts than inner lamps, so replacing a damaged outer lamp improves both safety and vehicle appearance. The housing and lens are designed to match the original contours and mounting points of the Peugeot 406 Combi.

Technical Information

• Manufacturer: Stellantis / Peugeot
• Model: 406 Combi (Estate)
• Product Codes: 6350H5
• Other Numbers: NFP

Installation Recommendations

Basic replacement can be completed with common hand tools. Typical steps:

• Park on a level surface and protect the work area. Disconnect the negative battery terminal before starting to avoid short circuits and to protect vehicle electronics.
• Access the lamp from inside the luggage compartment by folding or removing the trim panels to reach the mounting screws/bolts.
• Remove fasteners and carefully withdraw the lamp from the wing. Unplug the multi‑pin connector and detach any retaining clips.
• Fit the new lamp into the mounting location, reconnect the electrical connector, and secure with the original fasteners. Replace bulb holders if they were not supplied with the unit.
• Check all light functions (tail, brake and indicator) before refitting interior trim. Ensure the lamp aligns correctly with the body gap and that seals are intact to prevent moisture ingress.

For best results use correct replacement bulbs and inspect the wiring connector and gasket for corrosion or damage. If you are unsure about access or electronic issues, have the installation performed by a professional.

Why This Part Fails Most Often

• Impact Damage: Outer wing lamps are often damaged in minor collisions or by road debris, causing cracked lenses or broken mounts.
• Moisture Ingress: Damaged seals or cracked lenses allow water into the housing, leading to corroded contacts and electrical faults.
• Connector And Socket Wear: Oxidation or heat-related degradation of bulb holders and connectors can cause intermittent lighting or failure.

Notes On Durability And Fitment

When replacing the outer lamp, inspect adjacent bodywork and seal surfaces. A new lamp will typically restore proper illumination and improve visibility, but longevity depends on correct sealing and undamaged wiring. Because this unit is sold without bulb holders, plan to reuse existing holders only if they are in good condition or install new holders to ensure reliable performance.