Mercedes W447 Rear Lamp Right O/S Tail Light Bulb Holder Socket A4478202400

Mercedes W447 Rear Lamp Right O/S Tail Light Bulb Holder Socket is an original component from the Rear lights and brake lights group, designed for installation on the right side of the rear bodywork. This used bulb holder allows for a technical replacement of a damaged lighting module that complies with factory specifications, while maintaining stylistic and electrical consistency with the other components of the installation.

Specifications and technical data

• SKU: A4478202400
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A4478202400
• Substitutable numbers: A4478202400, A 447 820 24 00
• Location on the vehicle: Rear, Right
• Category: Rear Light Assemblies

Purpose and vehicle placement

The presented bulb holder is designed for installation in the rear right part of the vehicle, in place of the factory lighting module. It is responsible for the proper operation of signaling functions on the right side of the rear of the car, which is important for both safety and compliance with traffic regulations.

The dedicated placement on the vehicle limits the risk of fitment issues, and the design, consistent with the solutions used by Mercedes, facilitates installation in place of the original component without the need for installation modifications.

Technical and functional characteristics

The bulb holder has been developed as a component installed inside the rear lighting assembly, responsible for the proper arrangement of light sources and a stable connection to the vehicle's electrical harness. The design, intended for operation in the rear body zone, ensures proper light signal routing and compatibility with factory control systems.

The used component retains the key features of the original solution, such as mounting geometry, light point arrangement, and electrical connectors, which facilitates trouble-free replacement in service or workshop conditions.

Condition, quality, and benefits of use

The item is offered in used condition, which allows for an economical replacement of the bulb holder while maintaining the manufacturer's original specifications. This type of solution is particularly beneficial for post-accident repairs, point lighting upgrades, or restoring full functionality of the signaling system in vehicles used intensively.

Using an original rear lamp bulb holder on the right side helps maintain the visual and technical consistency of the entire lighting assembly, minimizing the risk of differences in color, intensity, or lighting characteristics between the left and right sides.

Application in service and vehicle modernization

The rear right bulb holder will prove useful both in professional body and paint shops, as well as in workshops specializing in the service of Mercedes W447 models. It can be used for post-collision repairs, replacing damaged lighting modules, or restoring full functionality of brake and position lights.

If you are planning a comprehensive repair or modernization of the rear lighting zone in your Mercedes and need other elements from the same group, such as lenses, light modules, or complete lamp assemblies, check the available parts in the Mercedes rear lights and brake lights category.

Support with selection and additional information

Choosing the right rear lamp bulb holder is crucial for maintaining the correct operation of the lighting system and avoiding errors in the vehicle's diagnostic systems. For vehicles in the youngtimer segment, it is worth considering a broader modernization using proven, used components. Practical tips on refreshing older models, including Mercedes cars, can be found in the article The second life of a youngtimer – how used car parts rejuvenate cars from the 1998–2012 model years.