BMW E81 E87 LCI E90 E91 Power Steering Rack Motor Electric 6855883

BMW E81 E87 LCI E90 E91 Power Steering Rack Motor Electric is an original BMW steering system component, designed for 1 Series and 3 Series models with electric power steering. Thanks to its factory design, it ensures precise handling, consistency with vehicle electronics, and stable operation of safety systems.

Specifications and technical data

• SKU: RHD-6855883-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6855883
• Substitutable numbers: 32106793458, 6793458, 32106788746, 32106792946, 6788746, 6792946, 32106872479, 6872479, 6855883, 32106855883
• Part type: Steering Rack
• Category: Gearboxes, Racks & Pinions

Purpose and function in the steering system

The described steering rack belongs to the Steering racks and housings category and is a central component responsible for transferring steering wheel movement to the front wheels. The integrated electric power steering motor works with the vehicle's sensors and control units, providing the appropriate level of assistance depending on speed and driving conditions.

In BMW E81, E87 LCI, E90, and E91 series vehicles, using an original steering rack with an electric motor allows for maintaining:

• consistency with factory software and steering system calibration,
• proper operation of stability control systems,
• appropriate steering force characteristics in both comfort and dynamic modes.

Construction and technical advantages

The steering rack was designed by BMW as an OEM component, which means full compatibility with suspension geometry and body mounting points. The integrated electric motor works with the rack-and-pinion gear, ensuring smooth, predictable responses to steering wheel movement without delays or unwanted play.

Key technical advantages include:

• factory design optimized for rigidity and durability,
• use of electric power steering, which reduces the load on the internal combustion engine and promotes lower fuel consumption compared to hydraulic systems,
• compatibility with advanced driver assistance systems, depending on the specific vehicle equipment.

Condition, fitment, and service application

The item is offered in used condition, allowing for cost-effective steering system repair while maintaining the manufacturer's original specifications. This solution is particularly beneficial in cases of mechanical damage to the rack, power steering motor failure, or the need to replace the complete assembly after a collision.

Before installation, it is recommended to verify compatibility with the specific vehicle equipment version and to perform adaptation and calibration of the system using appropriate BMW diagnostic software. This approach minimizes the risk of power steering errors and ensures stable, predictable vehicle handling.

Benefits of using an original BMW steering rack

Using an original steering rack with an electric power steering motor in a BMW E81, E87 LCI, E90, or E91 brings a number of practical benefits:

• maintaining factory handling characteristics – the car reacts to steering wheel movement exactly as the manufacturer intended,
• secure fitment with other suspension and body components,
• reduced risk of electronics compatibility issues and vehicle network communication errors,
• possibility of using the part as a replacement for various reference numbers within the same steering rack family.

This solution is especially recommended in situations where the priority is to keep the vehicle in a configuration close to the factory state, without experimenting with unreliable aftermarket replacements.

If you are planning a comprehensive repair or upgrade of the steering system in your BMW and need other components from the same group, such as steering columns, rack housings, or additional mounting elements, check out the available parts in the BMW Steering racks and housings category.

For users interested in a more conscious approach to service and the use of recycled parts to reduce environmental impact, it is worth reading the article Eco-tuning in practice: how to increase performance while reducing your carbon footprint with recycled parts, which discusses the practical aspects of this approach in the automotive industry.