Height Level Sensor Bracket BMW F20 F21 F22 F30 F31 Mount Rear Left N/S 6783046

The BMW F20 F21 F22 F30 F31 Xenon Headlight Level Sensor Bracket Left Rear is a precise component of the headlight leveling system, responsible for the correct interaction between the suspension and xenon headlights. Thanks to proper sensor mounting, the automatic leveling system maintains a stable light beam, improving night driving safety and comfort. This solution is dedicated to selected BMW F-series models, designed to preserve factory lighting parameters.

Specifications and technical data

• SKU: 6783046
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6783046
• Substitutable numbers: 6783046, 37146783046
• Location on the vehicle: Rear, Left
• Category: Headlight Assemblies

Bracket Purpose and Function

The presented bracket is a component of the xenon headlight leveling system, mounted in the rear axle area on the left side. Its task is to stably and repeatedly hold the suspension position sensor, which transmits information about the current vehicle load to the control unit. Based on this, the system automatically adjusts the headlight beam angle, reducing glare for other road users and providing the driver with clear road illumination.

The bracket operates in a demanding environment – near the suspension, exposed to vibrations, dirt, and temperature changes. Proper fit and mounting rigidity are crucial for maintaining the correct geometry of the sensor's operation and the stability of its readings.

Compatibility with BMW F-Series Platform

The BMW F20 F21 F22 F30 F31 Xenon Headlight Level Sensor Bracket Left Rear has been designed with the body and suspension structure characteristic of the F-series in mind. This means appropriately selected mounting points, geometry, and operating range, consistent with the manufacturer's factory specifications. Using a dedicated bracket allows for maintaining:

• correct interaction with the suspension position sensor,
• compliance with the factory xenon headlight leveling system,
• stable positioning of the component on the rear axle on the left side.

As a result, the lighting system retains the parameters intended by the manufacturer, which is important for both driving comfort and meeting technical inspection requirements.

Mounting and Operational Characteristics

The bracket is designed for installation at the rear of the vehicle on the left side, in close proximity to suspension components. The design anticipates cooperation with factory mounting points, which facilitates servicing and reduces the need for additional modifications. A properly selected bracket minimizes the risk of:

• sensor displacement after encountering road irregularities,
• play that affects suspension position readings,
• incorrect xenon headlight illumination due to incorrect sensor position.

This solution is particularly important in vehicles where the automatic headlight leveling system is a standard feature or a legal requirement for xenon headlights.

Condition and Application in Service

The offered part is used, making it an attractive alternative for repairing the headlight leveling system after mechanical damage or bracket corrosion. Replacing the bracket is often necessary after suspension work, collisions, or prolonged operation in harsh road conditions. Using an original used part allows for maintaining the system's structural integrity without the need for aftermarket replacements with uncertain parameters.

BMW Front Lights – Related Components

The xenon headlight system in a BMW includes not only the sensor bracket but also a range of cooperating components, such as control modules, headlights, ballasts, and wiring harnesses. If you are planning a comprehensive repair or upgrade of the front lighting area in your BMW and need other parts from the same group, such as headlights, control modules, or mounting accessories, check the available parts in the BMW Front Lights category.

For users interested in a broader technical context of vehicles with advanced drive and lighting systems, an article describing various four-wheel-drive solutions and their service specifics may be useful – you can find it here: xDrive, 4Matic, quattro or 4Motion – AWD comparison.