BMW Z4 Series E85 E86 Electric Steering EPS Rack Box Gear 6774373

Description

BMW Z4 E85/E86 Electric Power Steering Rack is a component from the Steering Racks and Housings category, designed for the steering system of BMW Z4 E85 and E86 models. This solution allows for the restoration of proper electric power steering operation, driving precision, and stability, while maintaining the system’s factory characteristics.

Specifications and technical data

• SKU: rhd-6774373
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6774373
• Substitutable numbers: 32116777507, 6777507, 32116765044, 6765044, 6774373
• Category: Gearboxes, Racks & Pinions

Purpose and Compatibility with BMW Z4 E85/E86

The offered Electric Power Steering Rack for BMW Z4 E85/E86 has been specifically designed for the front suspension and steering column architecture of these models. This ensures the correct gear ratio, geometry, and power steering force characteristics are maintained, leading to predictable vehicle responses to steering inputs.

This component is from the BMW line, meaning it offers a perfect fit for factory mounting points, compatibility with the vehicle’s original electronics, and correct communication with safety systems such as traction control or stability control.

Construction and Function of the Electric Power Steering Rack

The EPS rack combines a classic pinion and rack mechanism with electric power assistance, controlled by the vehicle’s electronic system. In practice, this means:

• precise transfer of steering wheel movement to the front wheels,
• speed-dependent steering assistance,
• cooperation with driver assistance systems,
• reduction of steering effort and improved maneuverability comfort.

Thanks to the electric power steering, the system does not require a hydraulic pump or high-pressure lines, simplifying the construction and reducing potential leak points.

Condition, Origin, and Benefits of Choosing a Used Rack

The EPS steering rack is used, offering an attractive cost-effective alternative to new components while maintaining the original manufacturer’s specifications. Such parts are sourced from dismantled vehicles where the steering system operated under normal driving conditions.

Choosing a used BMW steering rack allows you to:

• reduce the cost of steering system repair,
• maintain factory power steering performance parameters,
• avoid issues with fitting low-quality aftermarket replacements.

If you want to learn more about the advantages of such solutions, it’s worth reading the article “Used Car Parts: Myths and Facts You Need to Know”, which dispels common doubts about second-hand components.

Why Choose a BMW Steering Rack for the Z4

The original Electric Power Steering Rack for BMW Z4 E85/E86 ensures consistency with the vehicle’s original chassis design. In practice, this means:

• proper operation of electric power steering across the full speed range,
• stable lane keeping at higher speeds,
• confident vehicle behavior during sudden maneuvers,
• no need for adapter mounts or wiring modifications.

For BMW Z4 owners who expect to maintain the characteristic sporty handling, using an original rack from the same model series is crucial for preserving the proper “feel” of the steering wheel.

BMW Steering Racks and Housings – Selecting the Right Component

When selecting a steering rack for the BMW Z4, it is important to pay attention to compatibility with the body version and the type of power steering system used. Manufacturer markings, OEM part numbers, and interchangeable numbers are helpful for precisely verifying compatibility with a specific vehicle.

If you are looking for other BMW Steering Racks and Housings for your car, check out the BMW Steering Racks and Housings available in our assortment to select the component that best fits your model.

Summary

The BMW Z4 Series E85 E86 Electric Steering EPS Rack Box Gear is an original electric power steering rack designed for Z4 E85/E86 models, allowing for the restoration of proper steering system operation without altering the vehicle’s construction. Choosing a used, factory part is a sensible compromise between repair cost and maintaining the driving characteristics typical of the BMW Z4.