Audi A4 B9 Rear Brake Light Third Stoplamp Light Red 4M0945097

Audi A4 B9 Rear Brake Light Third Stoplamp Light is an original part from the Main and center brake lights group, designed for installation in the rear of the vehicle body. The red lens provides a clear braking signal, improving vehicle visibility for drivers behind you and increasing safety in both city traffic and on the road.

Specifications and technical data

• SKU: 4M0945097
• Mark: Audi
• Condition: Used
• OEM Part Number: 4M0945097
• Substitutable numbers: 4M0945097, 4M0 945 097
• Location on the vehicle: Rear
• Color: Red
• Category: Centre & Third Brake Light Assemblies

Purpose and function of the third brake light

The third brake light in the Audi A4 B9 plays an important role in the vehicle's rear lighting system. Positioned higher than standard lamps, it generates an additional, highly visible braking signal, which reduces the reaction time of drivers behind you. This reduces the risk of rear-end collisions, especially in poor visibility conditions or heavy traffic.

The red color of the lens complies with type-approval requirements for brake lights, and the design tailored to the Audi body allows for aesthetic integration with the lines of the rear of the car. This solution combines safety aspects with the maintenance of a consistent factory look.

Construction, color, and body fitment

The element has been designed specifically for the rear body zone of the Audi A4 B9, which translates into a precise fit for the factory mounting hole. The red lens ensures the correct brake light color while blending well with the other rear lamps, maintaining a consistent look for the entire lighting set.

Thanks to the design intended for this specific model, installation is straightforward – without the need for body modifications or improvised mounts. This is particularly important during post-accident repairs or when replacing a worn-out part, where maintaining factory geometry and rear body sealing is a priority.

Characteristics of the used part

The offered third brake light is a used part, which allows for economical repair of the lighting system while maintaining the original origin of the component. Such parts are frequently chosen for maintenance repairs, restorations, and returning a car to a factory-like state after mechanical damage.

Choosing an original, used brake light from this product group helps maintain consistent lighting parameters with other lamps, as well as compliance with the vehicle's electrical system. It is a practical solution for users who care about a reasonable repair budget while maintaining manufacturer standards.

Safety, visibility, and operational aspects

A functional third brake light has a direct impact on driving safety – especially in traffic jams, during sudden braking, and in conditions of limited visibility. An additional, high-mounted light signal is noticed more quickly by other road users, which helps reduce the risk of rear-end collisions.

Regular inspection of the rear lighting, including the additional brake light, is important both from a safety perspective and for technical inspection requirements. Replacing a faulty element with an original component from the same group allows for full functionality of the lighting system without quality compromises.

Expanding upgrades within Audi lighting

If you are planning a comprehensive repair or upgrade of the rear lighting zone in your Audi and need other elements from the same group, such as main brake lamps, center modules, or additional light segments, check out the available parts in the Audi main and center brake lights category.

If you are interested in the broader context of using used components when refreshing older models, it is worth checking out the guide describing practical upgrade scenarios and part selection – you can find it in the article The second life of a youngtimer – how used car parts rejuvenate cars from the 1998–2012 model years.