Mini Cooper One R55 R56 R57 R58 R59 Electric Power Steering Rack 6778550

Mini Cooper One R55 R56 R57 R58 R59 Electric Power Steering Rack is an original steering system component from the Steering Racks and Housings category, designed for Mini R series models. This used, factory part ensures proper transfer of steering wheel movement to the wheels, stable vehicle handling, and correct integration with the electric power steering system. It's a solution for users who expect a part that matches the manufacturer's design and is tailored to the specific characteristics of R55, R56, R57, R58, and R59 body styles.

Specifications and technical data

• SKU: rhd-6778550
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 6778550
• Substitutable numbers: 32106856877, 6856877, 3210678325132106778558, 3210679300832106783549, 6783251, 6778558, 6793008, 6783549, 6778550
• Category: Gearboxes, Racks & Pinions

Intended Use and Compatibility with Mini Models

The presented electric steering rack for Mini is designed to work with the steering system in Cooper One R generation models. Its construction is adapted to the suspension characteristics and front axle geometry of the hatchback, estate, and convertible body styles in this series, allowing for the preservation of factory driving feel.

Its original Mini origin promotes the maintenance of proper power steering operation, appropriate steering wheel effort, and correct interaction with the vehicle's electronics, including safety systems that utilize signals from the steering system.

Construction and Role in the Steering System

The electric power steering rack plays a crucial role in transferring motion from the steering column to the front wheel knuckles. The electric version integrates a classic rack with a power assistance module, enabling precise control of the assistance force based on vehicle speed and driving conditions.

Thanks to the use of an original Mini design:

• the correct steering system geometry is maintained,
• compatibility with factory mounting points is ensured,
• interoperability with factory sensors and wiring harness is preserved.

Such precise fitting minimizes the risk of play, incorrect wheel alignment, or issues with power steering system calibration.

Benefits of Using an Original Mini Steering Rack

Choosing a used, original Mini steering rack over an aftermarket alternative helps maintain consistency with the manufacturer's design. This is particularly important for systems responsible for vehicle handling, where precision and predictable vehicle response directly impact safety.

Key advantages include:

• factory fitment for Cooper One R55–R59 models,
• preservation of Mini's characteristic direct steering feel,
• reduced installation issues due to compatibility with original mountings,
• the ability to utilize the vehicle's existing electronic configuration.

For workshops and users, this translates to more efficient installation and a lower risk of requiring additional modifications.

Condition, Verification, and Service Application

This component comes from the group of used Mini parts, allowing for a reduced repair cost while maintaining the original construction. This type of steering rack is often chosen for repairs after mechanical damage, steering system play, or electric power steering failure.

Before installation, a standard service procedure is recommended, including checking the condition of dust covers, tie rod ends, and performing a wheel alignment after installation. A correctly chosen steering rack helps restore straight-line stability, consistent steering resistance, and predictable vehicle reactions to steering inputs.

Mini Steering Racks and Housings – Related Offer

If you are looking for other Mini Steering Racks and Housings for different engine or body variants, please check our dedicated category: Mini Steering Racks and Housings. There you will find a wide selection of original steering system components, tailored for many models of this brand.

Why Choose Used OEM Parts?

When choosing a used steering rack, it's beneficial to understand the advantages of original OEM components compared to cheaper aftermarket alternatives. For more information on the safety, quality, and cost-effectiveness of such solutions, please read our article: OEM Quality and Safety Guarantee – Why Used Original Car Parts Are the Best Choice for Your Car?.