The left rear lamp bulb socket designed for the Peugeot 308 Hatchback provides a reliable mechanical holder and electrical contact for the rear combination bulb. Supplied with a short length of pigtail wiring, this socket is ideal for repairing damaged lamp holders, replacing melted or corroded contacts, or restoring a secure bulb connection after lamp body repairs. The part is commonly searched for by product code and bulb type, which makes it easy to find in catalogs and online stores.

Key Features And Function

The socket secures the P21/5W dual-contact bulb used for stop/taillight and indicator or for combined filament bulbs. It ensures stable electrical contact, proper alignment of the bulb, and mechanical retention inside the lamp housing. The delivered pigtail speeds up replacement where the original harness connector is damaged or brittle. Note: This delivery does not include the rubber sealing grommet, so extra attention to sealing the lamp is required during installation.

Technical Information

• Manufacturer: Stellantis (Peugeot)
• Model: Peugeot 308 Hatchback
• Product Codes: 1606959280
• Other Numbers: P21/5W (Bulb Type; equivalent to 1157 double-contact bayonet)

Fitment

Intended For Left Rear Lamp Use On Peugeot 308 Hatchback Models. The part is typically fitted where the original bulb socket is worn, heat-damaged, or corroded. Buyers often locate this item by searching the product code 1606959280 or the bulb type P21/5W.

Replacement Procedure

• Disconnect Battery If Advised By The Vehicle Repair Manual To Avoid Short Circuits When Working On Wiring.
• Access The Rear Lamp Unit By Opening The Tailgate And Removing Interior Trim Or The Lamp Mounting Screws As Required.
• Remove The Lamp Assembly From The Body If Necessary To Reach The Socket.
• Extract The Old Socket By Releasing Any Retaining Clips Or By Turning/Unplugging The Holder Depending On Lamp Type.
• Connect The New Socket Pigtail To The Vehicle Wiring (Match Colors/Polarity). Use Proper Connectors Or Solder And Heat-Shrink For A Durable Joint.
• Fit The Bulb, Check That It Sits Firmly, And Test Lamp Functions Before Reassembling The Lamp Housing.
• Ensure Proper Sealing Of The Lamp Housing Since This Part Is Supplied Without The Rubber Grommet.

Installation Recommendations

Use Corrosion-Resistant Connectors Or Soldered Joints With Heat-Shrink Tubing For Longevity. Apply A Thin Layer Of Dielectric Grease On Contacts To Reduce Moisture Ingress And Oxidation. Replace Any Damaged Sealing Grommet Or Add Appropriate Sealant To Prevent Water Entry. Verify All Functions (Tail, Brake, Indicator) After Installation And Secure The Wiring Away From Sharp Edges Or Heat Sources.

Why This Part Fails Most Often

Failure Is Usually Caused By Heat Stress From Bulb Operation, Corrosion From Water Ingress (Especially When The Sealing Grommet Is Missing Or Damaged), Loose Or Oxidized Contacts Leading To Intermittent Operation, And Mechanical Fatigue From Vibration. Overheating Can Melt Plastic Contacts And Distort The Socket, While Moisture Causes Increased Resistance And Localized Heating.

Search By Product Code 1606959280 Or Bulb Type P21/5W To Quickly Find This Socket For Peugeot 308 Hatchback Repairs.

This left rear tail light is a direct-fit replacement designed for the Peugeot 308 Hatchback. It restores rear light functions and appearance after damage or wear and is suitable for professional workshops and experienced DIY mechanics who maintain Peugeot vehicles. The assembly is supplied without bulb holders, allowing you to reuse original holders if they are intact or purchase new holders with code 1606959280.

Key Features And Benefits

OE-fit geometry for accurate alignment and secure mounting. Durable lens material resists UV and road debris. Clear identification by part numbers makes ordering or cross-referencing simple: 9680425780 and 6350CV are commonly used search terms. Replacing a faulty tail light improves vehicle visibility and helps meet road safety regulations.

How The Part Functions

The assembly houses the rear light functions for the driver side, which depending on vehicle specification can include tail/parking light, brake/stop light, rear indicator, and reversing light. It channels and protects the bulbs and electrical connectors and provides the correct light output pattern through the lens design.

Replacement Procedure (Summary)

• Preparation: Park on level ground, engage parking brake and disconnect the negative battery terminal before starting work.
• Access: Open the tailgate and remove the interior trim or access panel to reach the fastening screws and electrical connector.
• Removal: Unscrew retaining bolts, carefully pull the lamp assembly outwards and disconnect the wiring connector. Remove old bulb holders if necessary.
• Fitment: Position the new lamp, connect the wiring harness, secure bolts to manufacturer torque, and check that the seal sits correctly to prevent water ingress.
• Test: Reconnect the battery, check all light functions (tail, brake, indicator, reverse) and adjust alignment if required.
• Time Estimate: Typically 30–60 minutes for an experienced mechanic, depending on trim removal complexity.

Technical Information

• Manufacturer: Peugeot (Stellantis)
• Model: Peugeot 308 Hatchback
• Product Codes: 9680425780, 6350CV
• Additional Numbers: 1606959280 (Bulb Holder/Socket)

Installation Recommendations

• Always disconnect the battery before starting to avoid short circuits and to protect vehicle electronics.
• Inspect and, if necessary, replace bulb holders and bulbs when installing the assembly to ensure reliable operation.
• Check and renew any damaged seals or gaskets to prevent moisture ingress—water is the most common cause of tail light failure.
• Use dielectric grease on contacts to reduce corrosion and improve long-term electrical reliability.
• Retighten fasteners to manufacturer torque values and ensure the lamp sits flush with the body to avoid vibration or leaks.

Why The Part Most Commonly Fails

Failures are usually caused by impact damage in minor collisions, water ingress leading to corrosion of contacts or sockets, and aging of the lens or housing causing cracks and loss of sealing. Repeated bulb changes or poor electrical contacts can also lead to intermittent operation. Ensuring correct sealing and addressing connector corrosion prevents most common faults.

Keywords: Peugeot 308 tail light, rear left tail light, 9680425780, 6350CV, 1606959280.