Bulb Socket for Right Rear Lamp Peugeot 307 SW 6351X2 6351X3

Description

Socket with a short piece of wiring harness and a bulb for the right rear lamp for PEUGEOT 307 SW from 2005. Socket fully functional; functionality of the bulbs themselves is not guaranteed. Passenger side.

This replacement lamp socket with attached wiring is a practical solution for mechanics and DIY vehicle owners who need a quick, reliable repair for the right rear light cluster on the Peugeot 307 SW. Designed to restore electrical connection for tail/brake/indicator lighting, the unit saves time compared with rewiring in situ and matches common OE connector layouts used on Stellantis vehicles. Frequently searched under product codes such as 6351X2 and 6351X3, it is ideal when the original socket is corroded, melted or has intermittent contact.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Peugeot 307 SW (Estate) – right rear lamp, passenger side; common on 2005 models
• Product Codes: 6351X2, 6351X3, 6351.X2, 6351.X3
• Other Numbers: Bulb type P21/5W (dual-filament 21/5 W, common bayonet style)

Function

The socket provides mechanical support and an electrical connection for the dual-filament bulb used for rear position and brake light functions. It routes power from the car harness to the bulb and establishes the grounding path. A secure contact and intact insulation are essential for reliable light operation and to prevent overheating or intermittent faults.

Common Failure Causes

• Corrosion and oxidation of contacts due to moisture ingress or condensation in the lamp housing.
• Heat-induced deformation or melting of the plastic socket from bulb overheating or poor contact.
• Broken retaining tabs or cracked housing from vibrations, impacts or age-related embrittlement.
• Worn or broken wiring at the crimp/connector points caused by movement and strain.
• Bulb failure (note: bulbs included with the unit are not guaranteed to be functional).

Replacement Procedure

1. Prepare: Park on level ground, switch off ignition and, for safety, disconnect the negative battery cable if you will be handling connectors or if specified by the vehicle manual.
2. Access: Open the tailgate and remove the interior trim or access cover to reach the rear lamp assembly.
3. Remove Lamp Assembly: Unscrew or unclip the lamp cluster fasteners and gently pull the cluster out enough to access the lamp holders.
4. Remove Old Socket: Turn the old socket counterclockwise (or release its retaining clip), then pull it out and disconnect the wiring connector.
5. Install New Socket: Connect the wiring harness, insert the new socket into the lamp cluster and secure it by turning or clipping it into place.
6. Fit Bulb: Install a correct P21/5W bulb (replace old bulbs when replacing the socket) and ensure it sits firmly in the socket.
7. Test: Reconnect battery if disconnected, test all light functions (tail, brake, indicator) before reassembling trim.
8. Reassemble: Refit the lamp cluster and interior trim, secure all fasteners and confirm operation again.

Installation Recommendations

• Use dielectric grease sparingly on contacts to help prevent future corrosion and ensure good electrical contact.
• Replace bulbs at the same time when the socket shows wear; a new bulb reduces heat and contact issues from arcing.
• Inspect surrounding wiring and ground points for damage or corrosion and repair as required to avoid repeat failures.
• If connectors are brittle or wiring insulation is damaged, replace or properly insulate affected sections to restore durability.

Why The Part Fails Most Often

Rear lamp sockets typically fail due to moisture ingress and corrosion inside the lamp housing, prolonged exposure to heat from the bulb, mechanical stress from vibration or impact, and age-related degradation of plastic and metal contacts. Poor contact leads to increased resistance, heat and eventual melting or intermittent lighting faults.

Notes For Purchase

This product is commonly searched by the codes listed above (e.g., 6351X2, 6351X3). Bulbs supplied with the socket may not be guaranteed functional, so plan to test or replace bulbs during installation. The item is intended for the right rear (passenger side) lamp of Peugeot 307 SW models around 2005; suitability for other years or variants should be confirmed by matching connector shape and bulb type.