BMW E81 E87 E87N E90 E90N E91 LCI Power Steering Rack Boxes Electric 6872479

BMW E81 E87 E87N E90 E90N E91 LCI Power Steering Rack Boxes Electric is an original steering system component, designed specifically for the geometry and electronics of these models. Thanks to its factory design, it ensures precise vehicle handling and proper integration with assistance and safety systems. This is a solution for users who want to restore the correct operation of the steering system without compromising on fitment.

Specifications and technical data

• SKU: RHD-6872479-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6872479
• Substitutable numbers: 32106793458, 6793458, 32106788746, 32106792946, 6788746, 6792946, 32106872479, 6872479, 6794006, 32106785290, 6785290, 32106783128, 6783128, 32106784746, 6784746, 32106782204, 6782204, 32106779076, 6779076, 32106862854, 6862854, 32104087308, 4087308, 32102299543, 2299543
• Part type: Rack & Pinion
• Category: Gearboxes, Racks & Pinions

Purpose and compatibility with BMW models

The presented BMW electric steering rack has been developed for the E-generation 1 Series and 3 Series platform, including facelift (LCI) versions. The design accounts for the mounting spacing, gear ratio, and integration with electric power steering characteristic of these models, allowing for the preservation of the factory driving feel. By using an original BMW OE solution, this component is suitable for users who expect to maintain the stock performance parameters of the steering system without the need for adaptations or structural modifications.

Construction and function in the steering system

The rack belongs to the Steering Racks and Boxes category, responsible for transferring movement from the steering column to the front wheels and working in conjunction with the electric power steering. The integrated design of the housing and gear mechanism ensures stable guidance of the rack, which translates into predictable vehicle response to steering input. A properly selected steering rack is crucial for:

• maintaining correct wheel alignment geometry,
• vehicle stability at higher speeds,
• maneuvering comfort in city traffic,
• proper operation of assistance systems and driver aids, if present in the vehicle.

Benefits of using an original electric steering rack

Using a factory steering rack in the BMW E81/E87/E90/E91 LCI allows for maintaining the consistency of the entire chassis system. The original design ensures:

• precise mounting fitment to factory attachment points,
• consistency with electric power steering operating parameters,
• appropriate steering force characteristics, in line with the manufacturer's specifications,
• the ability for proper calibration and diagnostics using standard BMW service tools. For workshops and users, this means reducing the risk of compatibility issues and stable vehicle behavior after component replacement.

Component condition and service application

The offered steering rack is in used condition, making it an attractive solution for repairs where the cost-to-functionality ratio is important. It is particularly effective in situations where the existing rack shows play, uneven operation, or improper interaction with the electric power steering. Selecting the correct component is facilitated by the presence of the OEM part number and associated interchangeable numbers in the technical specification – this allows for verifying compatibility with the specific vehicle equipment version and model year.

Expanding work within the BMW steering system

If you are planning a comprehensive repair or upgrade of the steering area in your BMW and need other components from the same group, such as tie rods, ends, or additional mounting hardware, check the available parts in the BMW Steering Racks and Boxes category. For a better understanding of the impact of chassis components on vehicle handling and safety, it is worth checking out the guide on suspension, shock absorbers, control arms, and stabilizers – you can find it in the article Suspension System – A Comprehensive Guide to Shock Absorbers, Control Arms, and Stabilizers, which helps to view the steering and suspension as interconnected systems.