BMW F40 F44 Electric Power Steering Rack Gear Unit 5A09730

BMW F40 F44 Electric Power Steering Rack Gear Unit is an original steering system component designed for 1 Series and 2 Series Gran Coupé models. Thanks to its integrated electric power steering, it ensures precise handling, stable tracking, and predictable steering response, which translates into safe and comfortable BMW driving.

Specifications and technical data

• SKU: RHD-5A09730-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 5A09730
• Substitutable numbers: 5A09730, 32105A09730, 5A5B011, 32105A5B011, 5A3B651, 321005A3B651, 5A24221, 32105A24221, 5A09745, 32105A09745, 7915935, 32107915935, 6861953, 32106861953
• Part type: Steering Rack
• Category: Gearboxes, Racks & Pinions

Technical characteristics of the steering rack

The presented steering rack belongs to the Steering racks and housings category, meaning it is responsible for both transferring movement from the steering column to the wheels and for the stable mounting of the entire assembly within the suspension. The applied electric power steering solution allows for smooth adjustment of steering assistance force depending on vehicle speed and driving conditions.

The system was designed by BMW as an OEM component, ensuring it maintains factory performance parameters, correct gear ratio characteristics, and compatibility with vehicle safety systems, such as traction control or driver assistance systems.

Compatibility and application in BMW F40 / F44

The BMW F40 F44 Electric Power Steering Rack Gear Unit is dedicated to the BMW F40 and F44 platform, ensuring a proper fit for suspension geometry, mounting points, and the factory steering column. This allows for installation without any interference with the body structure or suspension components.

The component was developed to work with the electric power steering system controlled by the vehicle's electronics. Proper communication with control modules allows for the maintenance of speed-dependent steering functions and integration with stability control systems, which is particularly important in modern BMW models.

Condition, verification, and benefits of installation

The offered steering rack comes from the secondary market and has the status of a used original component. This type of part is an attractive alternative to new parts, allowing for reduced repair costs while maintaining factory design and fitment. In practice, this means the ability to restore the proper operation of the steering system without the need to use replacements with uncertain parameters.

Replacing the steering rack with an original component of this type is particularly recommended in the case of steering play, uneven power steering operation, knocking in the front of the vehicle, or steering-related errors stored in the car's electronics. Using the correct steering rack helps restore handling stability, improve maneuvering precision, and reduce wear on other suspension components.

Why choose an original BMW steering rack

Choosing an original steering rack for the BMW F40 / F44 primarily means certainty of fitment for the specific body version and chassis. The design developed by the vehicle manufacturer guarantees compliance with factory geometry settings, which has a direct impact on driving stability, tire wear, and the effectiveness of safety systems.

Additionally, using a component from the same design group allows you to avoid installation problems, the need for modifications, or improper interaction with the vehicle's electronics. This is a particularly beneficial solution for workshops specializing in the BMW brand and users who expect to maintain the driving characteristics typical of this brand.

Expanding steering system repairs in BMW

If you are planning a comprehensive repair or upgrade of the steering system area in your BMW and need other components from the same group, such as tie rods, ends, or steering rack housings, check out the available parts in the BMW steering racks and housings category.

For users interested in a broader perspective on the operation and maintenance of components in premium cars, it is worth checking out practical tips on servicing engine accessories in popular Mercedes models – you can find them in the article "Reliability under the star sign – how to take care of engine accessories in popular Mercedes-Benz C-Class and E-Class models?", which shows how choosing the right parts affects the durability of the entire vehicle.