Steering Rack Drive BMW E81 E87 E90 E91 Power Steering Box Motor Unit 6798894

Steering Rack Drive BMW E81 E87 E90 E91 Power Steering Box Motor Unit is an original steering system component designed for BMW 1 Series and 3 Series models with electric power steering. This used steering rack with an integrated power steering motor allows for a cost-effective yet technically sound steering system repair, while maintaining factory handling characteristics. It is a solution for users who expect precise steering response and full compatibility with the vehicle's factory electronics.

Specifications and technical data

• SKU: rhd-6798894-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6798894
• Substitutable numbers: 6798894, BG
• Category: Gearboxes, Racks & Pinions

Technical characteristics of the steering rack

The offered steering rack belongs to the Steering racks and housings category and is a factory solution used by BMW in vehicles with electric power steering. The integrated electric drive works in conjunction with safety and stability control systems, providing appropriately adjusted steering assistance depending on speed and driving conditions.

The steering rack construction is designed for rigidity and resistance to the loads generated by the front suspension in compact BMW models. As a result, the steering system maintains predictable characteristics, and the driver receives clear feedback from the front axle.

Purpose and compatibility with BMW models

The component is dedicated to selected versions of the BMW 1 Series E81/E87 and 3 Series E90/E91 equipped with electric power steering. Using an original steering rack from the same design family ensures:

• proper cooperation with the factory steering system controller,
• compliance with the calibration parameters of stability control systems,
• correct operating geometry of tie rods and steering knuckles.

For proper selection, it is recommended to compare the type of steering rack used in the vehicle and consult a mechanic or diagnostician to ensure that the installed component comes from the same generation of the system.

Condition, functionality, and benefits of installation

The steering rack is a used component, which allows for a significant reduction in repair costs compared to a new OEM part, while maintaining the original design. This type of solution is particularly beneficial in the event of a power steering motor failure, mechanical damage to the rack, or excessive play in the steering system.

Replacing the complete unit with the electric drive enables:

• restoring proper power steering operation,
• reducing unwanted play and knocking in the system,
• maintaining the factory handling character typical of BMW.

Professional installation and service aspects

Due to the complex construction and integration with the vehicle's electronics, installation by a specialized service center equipped with the appropriate tools for geometry alignment and potential system adaptation is recommended. A properly performed steering rack replacement affects driving safety, vehicle stability, and even tire wear.

After installation, it is worth performing:

• inspection and adjustment of the front axle geometry,
• computer diagnostics of the steering system and assistance systems,
• inspection of suspension components working with the steering rack.

BMW steering system expansion

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 steering housings, check out the available parts in the BMW steering racks and housings category.

Technical knowledge and operation

For users who want to better understand the relationships between individual vehicle systems and plan repairs optimally, our guide materials may be helpful. In the context of operating a car in demanding conditions, it is worth reading our article: Summer heat vs. cooling system: used radiators and fans as a guarantee of savings, which shows how to consciously approach the selection of used components and optimize service costs.