Mercedes GL X166 Rear Light Trunk Tailgate Inner Tail Lamp Left N/S A1668201164

Mercedes GL X166 Rear Light Trunk Tailgate Inner Tail Lamp Left N/S is an original component from the Rear lights and brake lights group, designed for installation in the rear left section of the vehicle. It ensures a consistent look for the lighting assembly, proper light signaling, and an aesthetic finish for the tailgate on the Mercedes GL X166 generation model.

Specifications and technical data

• SKU: A1668201164
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1668201164
• Substitutable numbers: A1668201164, A 166 820 11 64
• Location on the vehicle: Rear, Left
• Category: Rear Light Assemblies

Purpose and function in the vehicle

The presented lamp is designed as a component mounted at the rear of the vehicle, on the left side, within the tailgate area. It works in conjunction with the outer part of the lighting assembly, creating a cohesive system of rear and brake lights. Thanks to its factory geometry and appropriate housing profile, it maintains the correct body line and fitment to the tailgate contours.

The properly selected lens optics support the readability of light signals for other road users, which translates into safer braking and better vehicle visibility in urban traffic and on the road.

Original origin and fitment for Mercedes

The lamp was developed specifically for the Mercedes brand, which means maintaining factory standards of quality, compatibility, and assembly. The original design facilitates installation in the vehicle without the need for modifications to the wiring or mounts, and also allows for maintaining a uniform appearance of the entire rear lighting.

Thanks to the use of correct mounting points and electrical connectors provided by the manufacturer, this component works well both when replacing a damaged lamp and when restoring the vehicle to its factory specification.

Condition, service application, and benefits of installation

As a pre-owned aftermarket component, the lamp represents a sensible service solution for Mercedes GL X166 owners who want to restore full functionality of the rear lighting without the need to invest in a new part. Replacing a damaged or leaking lamp with an original used component allows for reducing the risk of lighting system errors and issues with technical inspections.

The main benefits of installation include:

• maintaining a consistent look of the rear body section,
• restoring proper operation of rear and brake lights,
• fitment to factory mounting points and electrical installation,
• optimal cost-to-functionality ratio thanks to the use of a pre-owned part.

Mounting zone and technical aspects

The lamp is intended for installation in the rear left part of the vehicle, within the tailgate area. Such placement requires maintaining proper sealing and correct alignment relative to the outer fender lamp so that the lens line is even and the gaps between body elements remain uniform.

During installation, it is worth paying attention to:

• proper seating in the tailgate socket,
• accurate connection of the electrical connector,
• checking the operation of all light functions after installation.

Expanding Mercedes rear lighting modernization

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 outer lamps, light modules, or additional segments of the rear assembly, check the available parts in the Mercedes rear lights and brake lights category.

Technical knowledge and vehicle development

When performing modernization work within the interior or the vehicle steering zone, including changes related to ergonomics and driving comfort, the article dedicated to replacing the steering wheel with a higher-class model may be helpful – Personalization and ergonomics – when is it worth replacing the steering wheel with a premium model?. It allows for better planning of consistent car modifications, combining issues of safety, comfort, and aesthetics.