Steering Rack BMW F20 F21 F30 F31 Electric Power Steering Box Gear RM 6870464

Steering Rack BMW F20 F21 F30 F31 Electric Power Steering Box Gear is an original steering system component designed for BMW 1 and 3 Series F-generation models. Thanks to its electric power steering, it ensures precise handling, stable lane keeping, and comfortable maneuvering in both city traffic and on the highway. This solution is dedicated to drivers and workshops that expect factory-fitment and predictable steering system performance.

Specifications and technical data

• SKU: rhd-6870464
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6870464
• Substitutable numbers: 6870464, 32106870464, 6889115, 32106889115, 6874685, 32106874685, 6875234, 32106875234, 6863717, 32106863717, 6863469, 32106863469, 6872407, 32106872407, 6881040, 32106881040, 6857286, 32106857286, 6868893, 32106868893, 6859251, 32106859251
• Category: Gearboxes, Racks & Pinions

Technical characteristics and application

The offered steering rack belongs to the Steering racks and housings category and is structurally adapted to work with electric power steering in selected BMW models. Using an original BMW solution allows for maintaining the correct gear ratio, linear steering response, and compatibility with factory safety systems and driving assistants that utilize signals from the steering system.

The component is intended for installation in BMW vehicles with electric power steering where a complete replacement of the steering rack and housing is required. By maintaining the factory steering geometry, it is possible to ensure proper wheel alignment and vehicle stability at higher speeds.

Benefits of using an original electric steering rack

Using an original BMW steering rack with electric power steering provides a number of practical benefits for both the user and the workshop:

• preservation of factory steering assist characteristics and handling precision,
• proper cooperation with vehicle electronics and driver assistance systems,
• stable vehicle behavior during braking, acceleration, and dynamic lane changes,
• reduced risk of improper fitment of suspension and steering system components.

For workshops, installing an original steering rack means predictable labor time, fewer corrections, and easier diagnostics after replacement. For the driver, it primarily means consistent driving feel compared to the factory configuration.

Condition, verification, and selection by part numbers

The steering rack is offered as a used part, which allows for an economical repair of the steering system while maintaining the original BMW design. Before selecting the component for a specific vehicle, it is recommended to verify compatibility using the OEM part number and available interchangeable numbers, as well as to compare the configuration of the removed rack with the offered unit.

To increase purchase security, it is worth using professional selection procedures based on catalog numbers and vehicle data. Practical tips on this process can be found in the Global Parts guide: Safe purchase of used car parts online – a step-by-step guide.

Application in the BMW steering system

The electric power steering rack plays a key role in transferring steering input to the front wheels and shaping the handling characteristics of the BMW F-series. It is responsible for:

• precise translation of steering wheel movement into changes in driving direction,
• cooperation with the electric power steering motor and control unit,
• maintaining proper steering system rigidity,
• transferring loads from the suspension to the body through the rack housing.

A properly selected and functional steering rack has a direct impact on driving safety, maneuvering comfort, and even tire wear. Therefore, when replacing, it is worth choosing an original component from the BMW group that maintains the parameters specified by the manufacturer.

Repair expansion within 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 tie rods, ends, or additional housings, check out the available parts in the BMW steering racks and housings category.