BMW E87 E90 E91 Active Steering Power Steering Rack Boxes Electric 6770535

BMW E87 E90 E91 Active Steering Power Steering Rack Boxes Electric is an advanced, electrically assisted steering rack housing designed for BMW 1 and 3 Series models. Thanks to its integrated active steering system, it provides precise steering response, improving stability, handling comfort, and safety across a wide speed range.

Specifications and technical data

• SKU: rhd-6770535
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6770535
• Substitutable numbers: 32106777470, 6777470, 32106770585, 6770585, 32106771669, 6771669, 32106774844, 6774844, 32106769335, 6769335, 6770535
• Category: Gearboxes, Racks & Pinions

Application and function in the BMW steering system

The offered steering rack belongs to the Steering racks and housings category and is compatible with the factory BMW Active Steering system. This component is responsible for transferring movement from the steering column to the front wheels, while simultaneously adjusting the steering ratio based on vehicle speed and driving conditions. In practice, this means:

• more direct steering response during maneuvering and parking,
• more stable handling at higher speeds,
• better trajectory control in emergency situations.

As an original BMW component, the steering rack maintains full compatibility with the vehicle's factory electronics, including stability control and driver assistance systems.

Construction, technology, and benefits of Active Steering

The steering rack with electric power assistance and the Active Steering function combines a classic mechanical rack with a precise electric drive and electronic control. This design allows for:

• dynamic real-time steering ratio adjustment,
• reduction in the number of steering wheel turns required for a full wheel lock,
• smoother and more predictable vehicle reactions to steering inputs.

As a result, the driver experiences more confident handling, and the car responds better both in the city and on the highway. Using an original BMW steering rack minimizes the risk of communication errors with control modules and facilitates subsequent calibration at a service center.

Condition, origin, and installation aspects

The steering rack comes from BMW and is a used component, which allows for an economical repair of the steering system while maintaining original build quality. This type of part is particularly beneficial in cases of:

• mechanical damage to the rack after a collision or suspension impact,
• excessive play in the steering system,
• problems with the operation of the electric power steering or the Active Steering function.

Before installation, it is recommended to verify compatibility with the specific vehicle equipment version and to perform adaptation and calibration at a specialized service center to fully utilize the system's capabilities.

Why choose an original BMW Active Steering rack

Choosing an original steering rack with the Active Steering system for a BMW E87, E90, or E91 is a solution that:

• maintains factory driving characteristics and handling performance,
• ensures high compatibility with vehicle electronics,
• reduces the risk of future installation and diagnostic issues.

For users who value steering precision and the consistent operation of all assistance systems, using an original BMW steering rack is a technically sound and long-term beneficial solution.

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

For a better understanding of the specifics of servicing vehicles of this brand and the cost-effectiveness of using original used BMW components, it is worth reading the article BMW N47 timing chain – typical failure and repair using original BMW parts, which discusses the practical aspects of operating and repairing BMW engines.