BMW E90 Bulb Socket Rear Bulb Holder Light Side Panel Right O/S 6937474

The BMW E90 Rear Tail Light Insert Socket Housing is an original lighting installation component designed for the right rear lamp in 3 Series E90 models. It ensures stable bulb seating and a secure electrical connection, which translates to the proper functioning of the parking lights, brake lights, and turn signals. This is a practical solution for repairing a damaged lamp, replacing a burnt socket, or restoring the full functionality of the lighting system.

Specifications and technical data

• SKU: 6937474
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6937474
• Substitutable numbers: 63216937474, 6937474, 51228402601, 8402601
• Location on the vehicle: Rear, Right
• Category: Light Bulbs & LEDs

Purpose and Function in the Lighting System

The rear tail light insert socket housing is responsible for the mechanical and electrical integration of bulbs with the right rear lamp of the vehicle. This component:

• holds the bulbs in the correct position relative to the reflectors and lens,
• ensures stable electrical contacts, reducing the risk of flickering or light failure,
• allows for quick removal and replacement of service bulbs,
• works with the factory BMW wiring harness, maintaining compatibility with the vehicle's installation.

Thanks to this, the BMW E90 rear light system maintains proper light geometry and signal clarity for other road users.

Construction and Fitment for BMW E90

The housing has been specifically designed for the E90 platform, meaning precise fitment for the right rear lamp. The construction includes:

• factory mounting points to the lamp body,
• dedicated sockets for the appropriate bulb types used in this model,
• an electrical connector compatible with the original BMW wiring harness.

This solution allows for plug-and-play installation, without the need for wiring modifications, adapter fabrication, or interference with the original lamp.

Benefits of Using an Original Socket Housing

Using the correct rear tail light insert for the BMW E90 offers a range of practical benefits:

• restoring full functionality to the right rear lights of the vehicle,
• reducing problems with overheating and burnt contacts, typical of faulty or makeshift repaired sockets,
• maintaining compliance with the factory lighting system parameters,
• easier diagnosis of potential electrical faults in the future.

This is particularly important when operating the car in urban and rural traffic, where clear rear lights directly impact safety and driving comfort.

Item Condition and Service Application

The offered rear tail light insert socket housing is a used part, sourced from disassembly, making it an attractive cost-effective alternative to a new OEM component. It is suitable for both typical repairs after mechanical damage to the lamp and for replacing a worn insert where plastic deformation or contact issues have occurred.

In practice, it is a common choice for:

• post-accident repairs of the right rear corner,
• clearing lighting errors reported by the onboard system,
• renovation of the lighting system in older BMW E90 models.

Related Categories and Technical Knowledge

If you are planning a comprehensive repair or upgrade of the rear lighting area in your BMW and need other parts from the same group, such as inserts, modules, or complete lamp assemblies, check the available parts in the BMW LED Lamps and Lights category.

To better understand the importance of functional lighting and component selection, it is worth referring to the practical tips contained in the article See More and Better – A Complete Guide to Selecting and Replacing Used LED and Xenon Headlights, which discusses, among other things, the selection of original lighting components for BMW models.