This replacement bulb socket is intended for the right-hand rear lamp on first generation Citroën C1 and Peugeot 107 models. It secures and connects the brake/taillight and indicator bulbs to the vehicle wiring harness. The part is commonly searched by OE and supplier numbers shown below, which makes identification and ordering straightforward for workshops and DIYers.

Technical Information

Manufacturer: Stellantis (Citroën / Peugeot)

Model: Citroën C1 (First Generation), Peugeot 107 (First Generation)

Product Codes: 634681, 81550-0H060

Other Numbers: 6351X8, 6351X6

Function And Application

The socket holds and electrically connects the rear lamp bulbs (tail/brake/indicator) to the vehicle’s wiring. It provides mechanical support, electrical contacts and, in many designs, a basic seal against moisture. This item is a direct-fit component for the right rear light cluster on the listed vehicles and is intended for use when the original socket is damaged, corroded or has poor electrical contact.

Replacement Procedure (Overview)

• Open the rear boot/trunk and remove interior trim panels or access flap to reach the lamp assembly.
• Unscrew or unclip the tail lamp fasteners and carefully withdraw the lamp housing from the body.
• Locate the bulb socket at the rear of the lamp housing, press the retaining tab and rotate or pull the socket out depending on the design.
• Disconnect the electrical connector, replace the old socket with the new one, reconnect and test the circuit before refitting the lamp housing.
• Reassemble the lamp and interior trim, ensuring all seals and fasteners are secured to prevent water ingress.

Recommendations For Installation

• Work on a cold vehicle and disconnect the battery if you will be handling multiple electrical connections.
• Check bulb condition before final assembly—this socket is supplied without guarantee of bulb functionality.
• Clean mating surfaces and connector pins; apply a light dielectric grease to contacts to reduce future corrosion.
• Inspect the lamp housing seal and replace if damaged to avoid moisture reaching the new socket.
• After installation, verify all light functions (tail, brake, indicator, and reverse if applicable) to ensure proper operation.

Why This Part Commonly Fails

The most frequent causes of socket failure are moisture ingress and corrosion of the electrical contacts, heat-related plastic degradation from bulb operation, mechanical damage during bulb changes, and general aging. Water or condensation inside the lamp accelerates corrosion and can cause intermittent connections or complete loss of contact. Poorly seated bulbs or vibration can also lead to cracked sockets or broken retaining tabs.

This socket is a practical, cost-effective repair for restoring reliable rear lamp connection and ensuring safe, legally compliant lighting on the road. Many professionals and DIY enthusiasts search by the OE numbers listed above when replacing this part.

Product Overview

This replacement bulb holder with an attached wiring pigtail is designed for the right rear lamp assembly on Citroën C1 and Peugeot 107 vehicles. It restores the electrical connection between the vehicle harness and the lamp sockets, providing a quick repair option for broken sockets, damaged leads or corroded contacts. Ideal for professional workshops and DIY mechanics who search by part number to ensure compatibility.

Key Features

• Direct fit for right rear lamp application on Citroën C1 and Peugeot 107 (first generation).
• Includes socket(s) and a piece of wiring for straightforward replacement of the damaged harness section.
• Supplied without bulbs; the functionality of bulbs is not guaranteed.
• Often stocked and searched by OE/product codes for fast identification.

Technical Information

• Manufacturer: Stellantis
• Model: Citroën C1 (First Generation), Peugeot 107
• Product Codes: 634681, 81550-0H060, 6351X8, 6351X6
• Additional Numbers: 634681, 6351X6, 6351X8, 81550-0H060

Installation Recommendations

Follow safe working practices and vehicle-specific procedures when replacing the lamp holder. Recommended steps:

1. Disconnect the vehicle battery before starting work to avoid short circuits or damage to electrical components.
2. Access the right rear lamp assembly from the boot/compartment: remove trim panels and unscrew the lamp housing fasteners.
3. Remove the lamp assembly and access the old socket/wiring. Unplug any connectors and rotate or unclip the socket to release it from the housing.
4. Fit the new holder, route the pigtail to avoid sharp edges, and secure any retention clips or grommets to maintain sealing against moisture.
5. Reconnect connectors, reassemble the lamp and test all functions (tail, stop, indicator) before reattaching trim panels.
6. Use dielectric grease on contacts to reduce corrosion risk and ensure a reliable connection.

Why This Part Fails

• Moisture Ingress: Water entry into the lamp housing causes corrosion of contacts and connectors.
• Heat Damage: High operating temperatures or incorrect bulb wattage can melt plastic sockets or deform contacts.
• Mechanical Stress: Vibration, impact, or repeated bulb changes can crack the plastic or loosen contacts.
• Electrical Contact Wear: Oxidation and loss of spring tension in contacts lead to intermittent or non-functioning lights.

How Replacement Is Performed

The bulb holder is typically replaced by removing the tail lamp assembly, disconnecting the old socket from the lamp and harness, and installing the new holder into the lamp housing. Reassembly is straightforward: secure the lamp, reconnect the battery, and verify all rear light functions. If corrosion or wiring damage extends beyond the holder, additional harness repairs may be necessary.

Practical Notes

• Searches for this part are often performed using the product codes listed above—use them to speed up identification.
• Bulbs are not included and their operation is not guaranteed with this part; check and replace bulbs if required.
• If the lamp housing shows signs of cracking or heavy moisture ingress, replace or reseal the housing to prevent repeat failures.

Direct replacement right rear combination lamp for Peugeot 107 (model years up to 2012) and compatible Citroën C1 vehicles. Ideal for professional workshops and competent DIY mechanics looking for a correct-fit, OE-style lighting unit. Frequently searched under part number 6351X6, this lamp restores rear position, stop and indicator visibility (depending on vehicle specification). Supplied without bulb sockets—order bulbs or holders separately to complete the repair.

Installation

Typical replacement is straightforward: open the boot, remove the inner trim or access panel to reveal the lamp retaining screws, unscrew the fasteners, disconnect the electrical connector, remove the old unit and refit the new lamp in reverse order. Check alignment of mounting tabs and hand-tighten fasteners before final torque. After installation, test all light functions (tail, brake, indicator/reverse if applicable) before reassembling trim.

Technical Information

• Manufacturer: Stellantis
• Model: Peugeot 107; Compatible With: Citroën C1
• Product Codes: 6351X6
• Other Numbers: No additional references provided

Installation Recommendations

• Work in a dry, well-lit area and keep fasteners and trim clips organized.
• Disconnect the negative battery terminal or ensure electrical circuits are inactive when handling connectors to avoid short circuits and accidental activation.
• Replace bulb sockets or bulbs if corroded or worn; a faulty socket can cause intermittent function even with a new lamp.
• Ensure sealing surfaces are clean and that gaskets are correctly positioned to prevent water ingress.
• Test all lamp functions after installation and secure trim to avoid rattles or stress on mounting tabs.

Why This Part Fails Most Often

• Impact Damage: Minor collisions or bumps commonly crack the lens or break mounting tabs.
• Water Ingress And Corrosion: Failed seals or damaged gaskets allow moisture in, causing corrosion of sockets and connectors or condensation inside the lamp.
• Socket Or Connector Wear: Heat cycles and corrosion can degrade bulb holders and electrical contacts, leading to flicker or loss of function.
• Plastic Fatigue: Repeated removal/installation or exposure to UV can make mounting points brittle and prone to breakage.

Notes For Buyers

This unit is supplied without bulb sockets; verify the required bulb types and holders for your vehicle before fitting. Popular search term for this product: Peugeot 107 right rear tail light 6351X6.