Volkswagen Golf Variant AJ5 Rear Light Bulb Holder Carrier Left N/S 1K9945257

Volkswagen Golf Variant AJ5 Rear Light Bulb Holder Carrier Left N/S is an original rear lighting system component, designed for installation on the left side of the Variant AJ5 body. This factory-made holder ensures proper bulb seating, stable electrical connections, and compatibility with the factory wiring harness, which translates into safe and predictable operation of the rear lights in your vehicle.

Specifications and technical data

• SKU: 1K9945257
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 1K9945257
• Substitutable numbers: 1K9945257, 1K9 945 257
• Location on the vehicle: Rear, Left
• Category: Rear Light Assemblies

Purpose and function in the lighting system

The rear light bulb holder on the left side of the Volkswagen Golf Variant AJ5 is responsible for the mechanical stabilization of the bulbs and their electrical connection to the vehicle's installation. This component is part of the Rear lights and brake lights group, therefore it has a direct impact on vehicle visibility, braking signaling, and the clarity of signals for other road users. Thanks to its factory geometry and fitment to the specific body model, the holder enables:

• proper positioning of the bulbs relative to the lamp lens,
• maintenance of stable electrical contact in the socket,
• reduction of the risk of light flickering caused by looseness or overheating of the contacts.

Construction and fitment for the Volkswagen Golf Variant AJ5

The discussed holder has been designed specifically for the rear lamp on the left side in the Variant AJ5 version, which means that its shape, bulb socket layout, and mounting points are in accordance with the manufacturer's factory requirements. Precise fitment to the lamp and body facilitates installation and minimizes the risk of leaks or stresses in the lamp housing. As an original Volkswagen brand component, the holder maintains compliance with the electrical parameters intended for this model, which is important when working with factory lighting controllers and vehicle diagnostic systems.

Benefits of using an original bulb holder

Using a dedicated bulb holder in the rear lamp on the left side brings a number of practical operational benefits:

• Stable operation of rear lights – proper current conduction and secure bulb sockets reduce the risk of lighting interruptions.
• Consistency with the Volkswagen electrical installation – no need for wiring modifications, soldering, or using adapters.
• Easier fault diagnostics – the original design makes it easier to locate problems in the event of lighting error messages.
• Hassle-free installation – the holder is prepared for mounting in the factory lamp, which shortens service time.

Application in the rear zone of the vehicle

The component operates in the rear part of the body on the left side, in the immediate vicinity of the lamp lens. The proper functioning of this holder is important for position lights, as well as brake signals or turn signals, depending on the lamp configuration in a given equipment version. A correctly selected bulb holder helps maintain compliance with vehicle lighting regulations and improves the clarity of light signals in road traffic.

Condition and service application

The holder comes from dismantling, which makes it a cost-effective solution for post-accident repairs, replacing a damaged lamp, or restoring the lighting system's efficiency after a bulb socket failure. This type of component is often chosen in situations where contact overheating, connection corrosion, or mechanical damage to the holder has occurred as a result of an impact to the rear of the vehicle. If you are planning a comprehensive repair or upgrade of the rear lighting zone in your Volkswagen and need other components from the same group, such as combination lamps, light modules, or additional holders, check the available parts in the Volkswagen rear lights and brake lights category. For drivers interested in a broader approach to vehicle servicing, including the selection of drivetrain components and the conscious use of used parts, the guide article Clutch and dual-mass flywheel – diagnostics and selection of parts for the drivetrain may be helpful, which shows how to plan repairs taking into account technical parameters and real operating conditions.