Rear Lamp BMW E90 Back Tail Light Left N/S Tail Back Taillight 6937457

Visual condition of the part

The product shows signs of use visible in the photos.

Rear Lamp BMW E90 Back Tail Light Left N/S Tail Back Taillight is an original lighting component designed for installation in the rear left section of the vehicle body. This used lamp provides a functional service solution, allowing you to restore the proper operation of the brake and position lights in your BMW. Thanks to the factory fitment for the E90 body, the installation is precise, and the body line remains consistent and aesthetic.

Specifications and technical data

• SKU: 6937457-4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6937457
• Substitutable numbers: 63216937457, 6937457
• Location on the vehicle: Rear, Left
• Category: Centre & Third Brake Light Assemblies

Purpose and fitment for BMW E90 Sedan

The presented Rear Lamp BMW E90 Back Tail Light Left N/S Tail Back Taillight has been designed as part of the rear lighting system, including brake lights and position lighting. Its placement in the rear zone on the driver's side ensures full compatibility with the factory mounting, wiring harness, and the shape of the fender and trunk lid in the sedan body.

The original design of the lamp guarantees:

• proper light distribution along the vehicle axis and to the sides,
• maintenance of the required visibility of the braking signal,
• consistent appearance with other rear lighting elements.

Function in the Main and center brake lights system

The lamp operates as part of the Main and center brake lights system, responsible for signaling braking and vehicle visibility after dark. A properly functioning rear left lamp:

• improves driving safety by providing a clear braking signal for vehicles behind,
• meets homologation requirements for rear lighting,
• reduces the risk of electrical system faults resulting from makeshift repairs.

Thanks to the preservation of the factory geometry of the lens and reflectors, the lighting system works stably, and the light intensity is uniform across the entire working surface of the lamp.

Installation and operational characteristics

The element is intended for installation in the rear – left side of the vehicle position, which eliminates the need for any body modifications. The lamp construction is prepared to work with factory mounting points and the standard BMW electrical harness, which facilitates service and shortens replacement time.

A used rear lamp is a practical solution in situations such as:

• mechanical damage to the lens (cracks, dents, loss of seal),
• visibility problems caused by the wear of the old component,
• the need to restore the original appearance of the rear of the vehicle after a collision.

Using an original component allows you to maintain stylistic consistency with the other rear lamp and other lighting elements.

Benefits of using an original BMW lamp

Choosing this rear left lamp for the BMW E90 Sedan primarily means a secure fit for the specific model and predictable behavior during operation. The original geometry and build quality translate into:

• stable mounting without stress on the bodywork,
• proper sealing at the contact point with the body,
• appropriate cooperation with the vehicle's electrical system.

For the user, this means reducing the risk of leaks, lens fogging, or lighting error issues in onboard systems.

Expanding the BMW lighting system – same parts group

If you are planning a comprehensive repair or upgrade of the rear lighting zone in your BMW and need other elements from the same group, such as left and right brake light modules, additional trunk lid lamps, or signaling elements, check the available parts in the BMW Main and center brake lights category.

Technical support and parts selection

When selecting a rear left lamp for the BMW E90 Sedan, it is worth paying attention to compatibility with the body type and vehicle equipment version. Original manufacturer markings and reference numbers allow for precise identification of the component, which minimizes the risk of purchasing an incompatible part.

If you are interested in a broader approach to diagnostics and the selection of consumables in a car, including analysis by OEM markings, the guide article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration may be helpful, in which practical rules for identifying parts by numbers and their proper operation are discussed.