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

Steering Rack BMW F20 F21 F22 F30 F31 Petrol Power Box Gear ZF 6874854 is an original steering system component designed for BMW 1 and 3 Series models with petrol engines. Thanks to its ZF power box gear design, it ensures precise handling, stable vehicle behavior, and predictable steering response, which translates into safe and comfortable driving.

Specifications and technical data

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

Purpose and compatibility

This steering rack has been designed for use in popular BMW F-series models with petrol engines, such as the F20, F21, F22, F30, and F31. The ZF power box gear design is factory-tuned to the driving characteristics of these vehicles, allowing for the maintenance of proper gear ratios, linear steering response, and consistency with the factory power steering system.

The element belongs to the Steering Racks and Housings group, making it a key component responsible for transferring movement from the steering wheel to the front wheels while maintaining appropriate stiffness and steering control.

Construction and technical characteristics

The ZF steering rack in this version utilizes a power box gear system, which combines hydraulic or electro-hydraulic steering assistance with a precise rack-and-pinion mechanism. This configuration ensures:

• smooth and predictable assistance across the full speed range,
• appropriate system stiffness at higher speeds,
• accurate translation of steering wheel movement into changes in driving direction.

Due to its adaptation for petrol engines, the system is tuned for the weight of the front axle and the suspension characteristics of these versions, which promotes stability and driving confidence. Original BMW origin means maintaining factory performance parameters and compatibility with other steering column and suspension components.

Condition, application, and benefits of replacement

The steering rack is offered as a used part, which allows for an economical repair of the steering system while maintaining the manufacturer's original specifications. This is a practical solution in situations where the vehicle exhibits symptoms such as steering play, uneven assistance, knocking during turns, or leaks within the rack.

Replacing it with a functional steering rack from the same BMW model group allows you to:

• restore proper geometry and driving stability,
• reduce noise and vibrations transmitted to the steering wheel,
• increase maneuvering confidence in the city and on the highway.

For workshops and individual users, this means the possibility of a quick, technically correct repair without the need for costly fitting of replacements of uncertain origin.

Integration with the BMW steering system

As an element from the BMW Steering Racks and Housings group, this rack works with factory tie rod ends, the steering column, and the power steering system intended for the specific body and engine version. Proper structural fitment facilitates installation and reduces the risk of issues with wheel alignment or power steering operation.

If you are planning a comprehensive repair or upgrade of the steering system in your BMW and need other parts from the same group, such as tie rods, boots, or rack housings, check the available parts in the BMW Steering Racks and Housings category.

Practical service tips

When planning a steering rack replacement, it is worth paying attention to the condition of cooperating components, such as tie rods, ends, and mounts, to avoid having to disassemble the system again in the near future. After installation, it is recommended to perform a professional wheel alignment, which will allow you to fully utilize the potential of the steering system and ensure even tire wear.

For drivers interested in a broader context of vehicle repairs, including the selection of used components, a guide regarding the alternator may be helpful – more information can be found in the article When is it worth replacing an alternator with a used one: a practical guide for drivers.