Audi A4 B8 Rear Tailgate Hatch Boot Lid Inner Bulb Mount Left N/S 8K5945257G

Audi A4 B8 Rear Tailgate Hatch Boot Lid Inner Bulb Mount Left N/S is an original component from the Rear lights and brake lights group, designed for stable mounting of bulbs in the driver-side rear lamp. Precise fitment to the Audi body structure ensures a secure electrical connection and proper operation of the rear lighting.

Specifications and technical data

• SKU: 8K5945257G
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K5945257G
• Substitutable numbers: 8K5945257G, 8K5 945 257 G
• Location on the vehicle: Rear, Left
• Category: Rear Light Assemblies

Purpose and function of the component

The left-side rear lamp bulb mount is responsible for securely holding the bulbs in the housing and ensuring their correct positioning relative to the lens. This ensures that position lights, brake lights, and turn signals maintain the correct light geometry, which translates into clear signaling for other road users.

The component is designed specifically for Audi vehicles, which means maintaining factory standards of quality, compatibility, and safety within the rear lighting system.

Construction and vehicle fitment

The mount is structurally prepared for operation in the left rear lamp of the vehicle, taking into account the body shape and the electrical system layout. Properly formed bulb sockets ensure:

• stable seating of light sources in the lamp,
• proper contact of electrical terminals,
• easy removal and replacement of service bulbs.

Such fitment reduces the risk of looseness, light flickering, or overheating of contacts, which is important for daily vehicle operation.

Condition and service application

The offered mount comes from the used parts group, which allows for an economical repair of the lighting system while maintaining the original manufacturer's specifications. This is a practical solution in situations where the bulb housing has been damaged, contacts have melted, or the element inside the lamp has mechanically cracked.

Replacing the rear lamp bulb mount is particularly recommended when problems with intermittently failing lights, lighting error messages, or visible signs of overheating within the housing occur.

Benefits of using an original mount

Using an original mount in the Audi A4 B8 provides several significant operational benefits:

• Factory fitment – the component is compatible with the lamp design and electrical system, which facilitates installation and eliminates the need for modifications.
• Stable lighting operation – proper seating of bulbs reduces the risk of power interruptions and improves the readability of light signals.
• Consistency with the original system – maintaining the original architecture of the rear lamp facilitates trouble-free diagnostics and vehicle servicing.

Expanding the Audi lighting system

If you are planning a comprehensive repair or upgrade of the rear lighting zone in your Audi and need other components from the same group, such as lenses, housings, or additional lamp modules, check the available parts in the Audi rear lights and brake lights category.

For drivers interested in a broader approach to vehicle servicing – including the selection of drivetrain components and optimizing the operation of the power transmission system – the guide article Clutch and dual-mass flywheel – diagnostics and selection of parts for the drivetrain may be helpful, which facilitates planning further service work for more extensive repairs.