Steering Rack BMW F20 F21 F22 F30 F31 Petrol Power Box Gear Motor ZF 6874854

Steering Rack BMW F20 F21 F22 F30 F31 Petrol Power Box Gear Motor with electric power steering is a steering system component designed for vehicles with a petrol engine, equipped with an integrated electric motor and ZF control module. This is a used, original steering rack that allows for a technically correct repair of the steering system without interfering with the vehicle's construction. Thanks to its factory geometry and fitment, it provides a solid foundation for restoring precise handling in your BMW 1 and 3 Series.

Specifications and technical data

• SKU: RHD-6874854-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6874854
• Substitutable numbers: 32106874854, 6874854, 7818177466
• Fuel type: Petrol
• Category: Gearboxes, Racks & Pinions

Purpose and compatibility

The described Steering Rack BMW F20 F21 F22 F30 F31 Petrol Power Box Gear Motor has been designed for installation in F-series models with petrol engines, such as the F20, F21, F22, F30, and F31. The integrated electric motor and worm gear work with the factory power steering system, ensuring appropriate steering force characteristics and correct communication with the vehicle's electronics.

The component belongs to the Steering racks and housings group, which means it is responsible for transferring movement from the steering column to the front wheel knuckles, while simultaneously working with the vehicle's safety and stability control systems.

Construction and technical function

The steering rack uses electric power steering integrated into the housing, which allows for precise control of the steering assist force depending on vehicle speed and driving conditions. The construction based on the ZF solution combines a mechanical rack-and-pinion system with an electric motor and intermediate gear, which enables:

• smooth transfer of torque from the steering wheel to the wheels,
• precise maintenance of the intended driving path,
• cooperation with stability control systems and driver assistance systems.

Thanks to the use of electric power steering, the system does not require a classic hydraulic pump, which simplifies maintenance and reduces the number of wear-and-tear parts. The appropriately selected operating characteristics of the steering rack allow for maintaining the clear and readable front-axle feel typical of BMW.

Application in petrol vehicles

The steering rack has been configured for petrol engines, which is important for power steering calibration and cooperation with the vehicle's electronics. Appropriate power steering control maps take into account the weight of the front axle and the drive characteristics, thanks to which the steering system maintains consistent behavior across the entire speed range.

In practice, this means stable handling at higher speeds and light, predictable steering operation during city maneuvering, parking, or driving in tight spaces.

Condition, installation, and benefits of use

The component is used, which allows for an economical repair of the steering system while maintaining the manufacturer's original specifications. The steering rack is intended for installation in place of the factory component, while retaining existing mounting points and connections to the steering column and knuckles.

Using an original steering rack in a BMW F-series allows you to:

• restore the correct geometry of the steering system,
• maintain factory electric power steering parameters,
• ensure compatibility with safety and stability control systems.

Expansion of the BMW steering system

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 additional steering racks, housings, or mounting elements, check out the available parts in the BMW steering racks and housings category.

Technical knowledge and selection of used components

When selecting used drivetrain and control system components, it is worth following proven procedures and experience from other designs. To deepen your knowledge on the safe use of used components in high-power vehicles, you can read the article 2.5 TFSI DAZA – how to safely increase the power of an Audi RS3 by buying used turbochargers, which discusses the practical aspects of selecting and operating advanced components.