Rotational Speed Sensor BMW F40 F45 Mini F55 F56 Steptronic Gearbox 8486548

Visual condition of the part

The product shows signs of use visible in the photos.

Rotational Speed Sensor BMW F40 F45 Mini F55 F56 Steptronic Gearbox is a precision component from the Gearbox sensors category, designed for use with the Steptronic automatic transmission in petrol-powered vehicles. It is responsible for the proper operation of the gear shifting system, gear ratio stability, and correct communication between the gearbox and the vehicle's electronics, which directly affects driving comfort and safety.

Specifications and technical data

• SKU: 8486548
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 8486548
• Substitutable numbers: 8486548, 28008486548
• Fuel type: Petrol
• Category: Transmission Sensors

Application and function in the drivetrain

The Steptronic gearbox sensor in BMW F40, F45, and Mini F55 and F56 models works in direct connection with the automatic transmission control module. Its task is to transmit information about the current state of the gearbox, which enables smooth gear selection, proper response to throttle input, and stable operation in both automatic and sequential modes.

In petrol vehicles, a properly functioning sensor is essential for:

• precise gear selection in the Steptronic gearbox,
• reducing jerking and delays during gear changes,
• maintaining correct drivetrain operating parameters,
• cooperation with safety and driving comfort systems.

Benefits of using an original Mini sensor

The offered component comes from the Mini line, which means factory-fit for the specified BMW and Mini models and compliance with the manufacturer's requirements. As a result, installation does not require any modifications to the wiring, and the gearbox operating parameters remain consistent with the vehicle's design specifications.

Choosing an original gearbox sensor ensures, among other things:

• preservation of the factory gear shifting characteristics in the Steptronic gearbox,
• consistency with the transmission control unit software,
• better parameter repeatability compared to generic aftermarket replacements,
• easier diagnostics during future service inspections.

Product characteristics and condition

The presented sensor belongs to the Gearbox sensors group and is intended for petrol-powered vehicles. The product is offered as used, which allows for an economical repair of the drivetrain while maintaining the original manufacturer's specifications. This type of solution is particularly beneficial for expensive automatic transmission components, where a new part can be a significant budget burden.

Due to its factory origin, the sensor retains the correct geometry, mounting points, and electrical connectors, which facilitates installation and reduces the risk of compatibility issues. This is a practical solution for workshops specializing in automatic transmission service and for users looking for a reasonable compromise between cost and quality.

Technical support and part selection

When selecting a Steptronic gearbox sensor for a specific BMW F40, F45, or Mini F55/F56 model, it is crucial to compare the vehicle's technical data and the part's parameters. It is worth paying attention to compatibility with the gearbox type, petrol engine version, and the car's model year to avoid problems with installation and transmission operation.

If you are planning a comprehensive repair or upgrade of the drivetrain area in your Mini and need other components from the same group, such as additional sensors, wiring harnesses, or control elements, check the available parts in the Mini gearbox sensors category.

To better assess the cost-effectiveness of using a used component in the transmission system, it is worth reading the guide on our blog: Used gearbox – when is it worth it and what you need to remember. The article helps to understand the differences between regeneration and the installation of used components and draws attention to issues of compatibility and durability.