Audi A3 8P Cabrio Rear Tail Light Bulb Holder Socket Left Right N/O/S 8P7945221

Audi A3 8P Cabrio Bulb Holder for Left/Right Rear Lamp is a precise component from the Rear Lights & Brake Lights group, designed for mounting bulbs in the rear lamp of an Audi A3 8P convertible. The holder ensures stable bulb seating and correct connection to the electrical system, resulting in clear light signals and safe vehicle operation. This solution is dedicated to users who expect compatibility with the factory lamp and the preservation of original rear lighting functionality.

Specifications and technical data

• SKU: 8P7945221
• Mark: Audi
• Condition: Used
• OEM Part Number: 8P7945221
• Substitutable numbers: 8P7945221, 8P7 945 221
• Location on the vehicle: Rear, Right, Left
• Part type: Rear Light Assembly
• Category: Rear Light Assemblies

Purpose and Vehicle Placement

The presented bulb holder is a component intended for the rear lamp of the Audi A3 8P Cabrio and can be used on both the left and right sides. Its placement at the rear of the vehicle means it is responsible for the correct operation of the parking lights, brake lights, and other lamp functions, depending on the configuration of the specific model. Thanks to its dedicated fit for the convertible body style, the correct mounting geometry and proper routing of the electrical harness are maintained.

Holder Construction and Function in the Lighting System

The bulb holder plays a crucial role as a carrier and connector between the bulbs and the vehicle's electrical system. It is responsible for:

• stable seating of bulbs in the rear lamp,
• maintaining the correct position of light sources relative to the lens,
• ensuring electrical contact with the wiring harness,
• limiting play and vibrations that could cause light flickering.

Thanks to its design tailored to the Audi A3 8P Cabrio lamp, the holder allows for the preservation of the factory light function distribution and compliance with homologation requirements for rear lighting. Replacing a damaged or melted holder with a part of the correct shape and contact configuration restores proper lamp operation without the need for modifications to the electrical harness.

Benefits of Using a Dedicated Bulb Holder

Using a holder designed for the Audi A3 8P Cabrio offers a range of practical operational benefits:

• Compatibility with the Factory Lamp – fits the geometry and mounting points of the original rear lighting assembly.
• Reduced Lighting Error Issues – proper contacts and bulb alignment minimize the risk of circuit interruptions and "bulb failure" messages.
• Easy Installation – the holder is designed for a specific mounting location, allowing for efficient replacement without lamp modifications.
• Can be used on the left or right side of the vehicle's rear, simplifying part selection during repairs.

For the user, this means a faster and more predictable repair of the lighting system, without the need for universal solutions that often require fitting or modification.

Application in Vehicle Safety Systems

Functional Rear Lights & Brake Lights are one of the fundamental active safety elements of a vehicle. The bulb holder, though small, influences:

• clarity of braking signals for drivers following behind,
• vehicle visibility after dark and in adverse weather conditions,
• stable operation of parking lights and turn signals (if handled by the specific lamp).

Replacing a worn or damaged holder is recommended in situations where intermittent light failures, melted bulb sockets, or problems with maintaining the bulb in the correct position occur. A correctly selected part allows for the restoration of full rear lamp functionality without replacing the entire lighting unit.

Product Condition and Installation Aspects

The offered bulb holder is from the used parts group, which means it is a component from a dismantled vehicle, intended for further use after proper installation. This type of solution is often chosen for vehicle repairs where preserving the original lamp construction and optimizing service costs are priorities. It is recommended to entrust the installation of the holder to someone experienced in working with vehicle electrical systems to ensure proper bulb seating and correct connector attachment.

If you are planning a comprehensive repair or upgrade of the rear lighting area in your Audi and need other parts from the same group, such as lenses, lamp modules, or complete lighting units, check the available parts in the Audi Rear Lights & Brake Lights category.

Additionally, to better care for the overall technical condition of your vehicle and understand the impact of other components on driving comfort and safety, it is worth familiarizing yourself with a guide on suspension – you will find it in the article Suspension System – A Comprehensive Guide to Shock Absorbers, Control Arms, and Stabilizers, which helps to look at car operation holistically.