BMW Z4 E86 Rear Third Brake Stop Lamp Light Tailight 7171815

BMW Z4 E86 Rear Third Brake Stop Lamp Light Tailight is an original component from the Main and center brake lights group, designed for installation in the rear part of the vehicle body. It provides clear, highly visible braking signaling, improving the vehicle's active safety and the readability of signals for drivers behind you. This solution is dedicated to BMW models, maintaining factory fitment and stylistic consistency.

Specifications and technical data

• SKU: 7171815
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7171815
• Substitutable numbers: 7171815, 63257171815
• Location on the vehicle: Rear
• Category: Centre & Third Brake Light Assemblies

Purpose and function of the third brake light

The presented third brake light is designed for installation in the rear zone of the vehicle, where it serves as an additional indicator informing about the start of braking. Its placement high above the line of standard brake lights improves signal visibility, especially in heavy city traffic and in limited visibility conditions. Thanks to this, drivers behind the BMW Z4 E86 react faster to braking, which reduces the risk of rear-end collisions.

Compatibility and fitment for BMW

The element has been developed specifically for the body structure of the BMW Z4 E86, which translates into precise fitment with the trunk lid and the rear line of the car. Its original BMW origin ensures the maintenance of proper geometry, mounting points, and compatibility with the factory electrical installation. As a result, the installation process is straightforward, without the need for wiring modifications or interference with the bodywork.

Technical and operational characteristics

As an element from the Main and center brake lights category, the third brake light is an essential component of the rear lighting system. The design intended for operation in the rear part of the vehicle takes into account exposure to changing weather conditions, vibrations, and temperature fluctuations. Properly selected lens and housing materials ensure stable light diffusion and a clear braking signal color, which is important for both safety and compliance with traffic regulations.

The used nature of the component allows for an economical restoration of the full functionality of the lighting system while maintaining the manufacturer's original specifications. This solution is particularly beneficial for post-accident repairs or replacing a damaged module when the priority is combining OEM quality with a reasonable cost.

Installation and service application

The third brake light mounted in the rear part of the BMW Z4 E86 is designed for direct integration with the vehicle's factory electrical system. In practice, this means it can be used in:

• repairs after collisions involving damage to the rear part of the body,
• service replacement of a faulty or leaking brake light,
• restoring full lighting system efficiency after a failure.

Using an original BMW component reduces the risk of compatibility issues, installation errors, or connection leaks, which is significant for both safety and the durability of the repair.

Expanding the lighting system and selecting parts

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 main brake lamps, center modules, or additional signaling lamps, check the available parts in the BMW Main and center brake lights category.

When choosing lighting components, it is worth considering whether a new or used component is the better solution. Discussing the cost and quality differences in the article Car parts – new or used? We compare costs, quality, and durability, which presents practical tips on selecting replacement parts, may be helpful in making a decision.