Product Overview

This rear right lamp is a direct-fit replacement designed for the Citroën C4 Grand Picasso. Engineered to match the original mounting points and electrical connector layout, it restores all external lighting functions on the right-hand rear of the vehicle. The part is suitable for professional workshops and skilled DIY mechanics who require a reliable tail-light assembly for repairs or collision damage repairs. Common search term: 6351AC.

Key Features

• Direct-fit replacement for the right rear position on Citroën C4 Grand Picasso models.
• Complete lamp assembly including housing and lens; compatible with original mounting brackets.
• Supports the vehicle’s tail, brake and indicator light functions; depending on equipment, unit may also integrate reverse light or rear fog light.
• Designed to interface with original wiring harness and connector types used by Citroën.
• Part number commonly searched: 6351AC — useful for quick identification in catalogues and search engines.

Technical Information

• Manufacturer: Citroën (Stellantis)
• Model: C4 Grand Picasso (Rear Right Lamp)
• Product Codes: 6351AC
• Additional Numbers: Not available

Installation Recommendations

Recommended for installation by qualified technicians or experienced DIYers. Typical replacement steps:

1. Park vehicle on level surface and ensure ignition is off.
2. Disconnect the negative battery terminal to prevent short circuits during work.
3. Open tailgate and remove interior trim panels to access mounting screws/bolts.
4. Unscrew mounting fasteners, carefully pull the lamp assembly rearward and unplug the electrical connector(s).
5. Fit the new lamp, connect the wiring harness and secure all fasteners to the manufacturer’s recommended torque values.
6. Check and test all light functions (tail, brake, indicator, reverse, rear fog) before reassembling interior trim.

Use replacement gaskets or sealant where needed to ensure watertight fit. Replace any damaged clips or fasteners to maintain correct alignment and sealing.

Why The Part Commonly Fails

• Impact Damage: Rear collisions or knocks can crack the lens or break mounting points.
• Water Ingress: Damaged seals or cracked lenses allow moisture to enter, causing corrosion or electrical faults.
• Bulb Or LED Module Failure: Traditional bulbs burn out over time; LED modules can fail due to thermal stress or internal electronics degradation.
• Connector Corrosion Or Wiring Faults: Corroded pins or chafed wiring can interrupt signals and cause intermittent operation.

Service Life And Maintenance

There is no fixed replacement interval for the lamp assembly itself; replace when damaged, cracked, or when lighting functions are compromised. Bulb lifetimes vary by type—halogen/incandescent bulbs typically last a few years in everyday use, while LED modules usually offer longer life but may require full-lamp replacement if they fail.

Notes For Mechanics And DIY Enthusiasts

When ordering, use the product code 6351AC and the vehicle model designation to improve search accuracy. Inspect mounting points and wiring harness for hidden damage after a collision. If the lamp is replaced due to moisture or condensation, verify and renew seals to prevent repeat failures.

High-quality replacement rear right lamp socket designed for Citroën C4 Grand Picasso vehicles. This lamp socket (often searched under part number 6351AC) includes a short length of wiring (pigtail) for easier installation and reliable electrical contact. Ideal for professional mechanics and DIY enthusiasts who need a fast, durable repair for a faulty tail light connection. The part restores correct bulb seating and electrical continuity, reducing flicker and intermittent lighting faults caused by worn or corroded sockets.

Features and Benefits

– Direct-fit replacement for the rear right tail lamp socket; reduces repair time thanks to included wiring pigtail.
– Restores secure bulb retention and solid electrical contact to eliminate flicker and intermittent operation.
– Suitable for workshop use and home repairs; simple to carry and store as a common spare part.
– Commonly referenced by product code 6351AC, increasing findability in parts searches.

Technical Information

• Manufacturer: Stellantis (Citroën)
• Model: Citroën C4 Grand Picasso
• Product Codes: 6351AC
• Additional Numbers: Not Available

Installation Recommendations

Follow these practical steps to replace the rear right lamp socket safely and efficiently:

• Park Vehicle Safely: Ensure the vehicle is parked on a level surface and the ignition is off.
• Disconnect Battery: For basic electrical safety, disconnect the negative battery terminal before working on the tail lamp circuit.
• Access Lamp Assembly: Open the tailgate and remove any trim or fasteners securing the tail lamp housing. Carefully remove the lamp cluster from the body to access the bulb holder.
• Remove Old Socket: Twist or unclip the existing bulb socket from the lamp cluster, unplugting it from the wiring harness. If wiring is damaged, cut back to healthy insulation and prepare wires for the new pigtail.
• Fit New Socket: Install the new socket into the lamp cluster and connect the supplied pigtail to the vehicle wiring using secure crimps or solder and heatshrink. Ensure correct polarity and solid mechanical joints.
• Seal and Test: Apply a small amount of dielectric grease to contacts to help prevent corrosion. Refit the lamp assembly, reconnect the battery, and test all lamp functions (stop, tail, indicator, reverse if applicable) before final assembly.
• Torque and Reassembly: Tighten lamp fasteners to manufacturer recommendations and refit interior trim panels.

Why This Part Fails Most Often

Understanding failure modes helps prevent repeat repairs:

• Corrosion From Moisture: Water ingress into the lamp housing causes terminal corrosion and poor electrical contact.
• Heat Damage: Overheating from high-wattage bulbs or poor contacts can melt plastic sockets or deform terminals.
• Mechanical Wear: Repeated bulb changes or impact to the lamp assembly can crack or break the socket housing.
• Poor Electrical Contact: Oxidation or loosened terminals lead to intermittent lighting or flicker.
• Aging Plastic: UV exposure and thermal cycling make the socket brittle, increasing the risk of fracture.

Replacing the socket with an intact unit and ensuring a watertight lamp seal will typically restore reliable lighting performance and reduce the chance of repeat faults.