BMW E91 Rear Light Lamp In Trunk Lid Tailgate Right O/S

Visual condition of the part

The product shows signs of use visible in the photos.

BMW E91 Rear Light Lamp In Trunk Lid Tailgate Right O/S is an original component from the Rear lights and brake lights group, designed for installation in the tailgate of the 3 Series estate. It is a factory BMW solution, ensuring correct light geometry, a consistent look with the other lamps, and proper integration with the vehicle's electrical system.

Specifications and technical data

• SKU: 4871740-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 4871740
• Substitutable numbers: 63214871740, 4871740, 63217289434, 7289434, 63217154162, 7154162
• Location on the vehicle: Rear, Left
• Category: Rear Light Assemblies

Purpose and fitment

The presented rear lamp has been designed specifically for installation in the tailgate of the BMW 3 Series E91, on the side corresponding to the driver's position in right-hand traffic. The location on the vehicle is specified as rear, right side, which allows for clear identification of its position in the vehicle's lighting system.

Thanks to the OEM design, the lamp retains factory mounting points and electrical connectors, which facilitates installation and reduces the risk of compatibility issues. This is particularly important when replacing components responsible for light signaling, where proper fitment has a direct impact on safety and regulatory compliance.

Technical and functional characteristics

As an element from the Rear lights and brake lights category, the tailgate lamp is responsible for the proper visibility of the vehicle from the rear, complementing the main lamp assembly located in the fenders. The design provides for cooperation with the factory BMW electrical system, which allows for maintaining the correct light intensity and uniform light distribution.

The original construction ensures:

• consistent lens color with other lamps in the vehicle,
• properly shaped reflectors and light diffusers,
• stable mounting in the tailgate panel,
• adaptation to operation in outdoor conditions (moisture, temperature changes).

Thanks to this, replacing a damaged lamp with the presented element allows for restoring the original lighting parameters without the need for installation modifications.

Condition, origin, and advantages of using a used part

The lamp is used, which means it comes from vehicle dismantling but retains the functionality required for further operation. For many users, this is a reasonable compromise between cost and quality – especially in the case of OEM components, where maintaining the manufacturer's original specification is key.

Using an original, used rear lamp in the BMW E91 tailgate allows you to:

• maintain the factory look of the rear bodywork,
• preserve the correct operation of the lighting system without installation errors,
• reduce repair costs compared to a new OEM component.

Professional installation and safety aspects

Due to the importance of lighting for driving safety, installation by a person with experience in working with BMW electrical systems is recommended. Proper seating of the lamp in the tailgate, correct tightening of the mounts, and a tight connection to the wiring harness minimize the risk of leaks, lens fogging, or intermittent operation.

After installation, it is worth performing a check of all rear lighting functions – position, brake, and turn signals – to ensure that the system operates stably and complies with homologation requirements.

Expanding the BMW lighting system

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 fender lamps, additional brake lights, or control modules, check the available parts in the BMW rear lights and brake lights category.

For users interested in broader modernization of BMW cars, including newer generation powertrains, a practical guide on selecting equipment for the B58 engine may be helpful – you can find it in the article BMW B58 code – checklist before buying a turbocharger and intercooler for the BMW 3 Series (G20), which discusses, among other things, compatibility and verification by VIN number.