BMW 3 4 Series F80 M3 F82 F83 M4 Power Steering Rack Box Gear MR 8073910

Description

BMW 3 4 Series F80 M3 F82 F83 M4 Power Steering Rack Box Gear is an original power steering component designed for the sports versions of the 3 and 4 Series. Thanks to the factory BMW design, it ensures precise handling, stable vehicle behavior at high speeds, and consistency with the factory suspension geometry. This is a solution for drivers who expect reliable steering response and the maintenance of standard driving parameters.

Specifications and technical data

• SKU: rhd-8073910
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8073910
• Substitutable numbers: 32107852661, 7852661, 32108073910, 8073910, 32108099562, 8099562, 32108092392, 8092392
• Category: Gearboxes, Racks & Pinions

Purpose and function in the steering system

The offered steering rack is a component of the power steering system in BMW M3 F80 and M4 F82/F83 models, where fast, predictable response to steering input is crucial. It is responsible for transferring torque from the steering column to the front wheels while utilizing power assistance, which reduces the effort required for steering and improves maneuvering comfort.

By using the original BMW design, the correct steering ratio characteristics are maintained, which is important both in daily driving and during dynamic use of the car on the road or track.

Benefits of using an original BMW steering rack

Choosing a factory steering rack for BMW 3 and 4 Series M models allows you to maintain the consistency of the entire chassis. The original component ensures:

• compatibility with factory mounting points and suspension layout,
• proper cooperation with safety and stability control systems,
• appropriate power steering characteristics in both comfort and sport modes,
• uniform steering feel after replacement, without unwanted play or unnatural operation.

For users who intensively use their M3 or M4, using an original steering rack from the Steering Racks and Housings category helps maintain handling stability and predictable vehicle behavior in corners.

Condition, verification, and service application

The item is offered as a used part, which allows for an economical repair of the steering system while maintaining BMW factory specifications. This type of component is often chosen in situations where the existing steering rack shows leaks, excessive play, or unstable power steering operation.

Before installation, a standard service procedure is recommended, including checking the system for leaks, inspecting hoses, and proper bleeding. A correctly selected steering rack helps restore consistent, predictable vehicle handling and reduces wear on other chassis components.

Reference numbers and fitment

The steering rack has a dedicated OEM part number and associated interchangeable numbers, which facilitates clear identification in BMW catalogs and service systems. This allows for precise matching to a specific vehicle configuration, without the risk of installing an incorrect variant.

When selecting the component, it is worth using the manufacturer’s markings to ensure full compatibility with the power steering system, steering column, and vehicle electronics. Using original reference numbers reduces the risk of problems with installation and subsequent operation.

Repair scope expansion and additional materials

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

When working with used mechanical components, it is worth knowing the best practices for their verification before installation – the guide Buying a used engine: 5 things you must check before installation may be helpful, as it discusses universal principles for assessing the technical condition of parts before installing them in a vehicle.