Mercedes W164 Power Steering Rack Box 4Matic Electrical Pinion Gear A1644600900

Mercedes W164 Power Steering Rack Box 4Matic Electrical Pinion Gear is an original steering system component designed for installation on the front axle of the vehicle. It ensures precise transfer of steering movement to the wheels, working in conjunction with the electric power steering and 4Matic drive, which translates into stable handling and predictable vehicle response. This solution is dedicated to users who expect to maintain factory handling characteristics and consistency with other suspension components.

Specifications and technical data

• SKU: RHD-A1644600900
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1644600900
• Substitutable numbers: A1644600900, A 164 460 09 00
• Location on the vehicle: Front
• Category: Gearboxes, Racks & Pinions

Purpose and function in the steering system

The described steering rack is a component from the Steering racks and housings group, responsible for converting the rotation of the steering wheel into the linear movement of the tie rods. Mounted in the front part of the body, it works with the suspension and 4Matic drive, maintaining proper wheel geometry and driving stability.

The solution with electric power steering on the rack allows for:

• more precise steering assistance adjustment depending on speed,
• better driver feedback from the road at higher speeds,
• reduction of mechanical loads compared to classic hydraulic systems.

Benefits of using an original Mercedes steering rack

Using an original steering rack in a Mercedes W164 with 4Matic drive allows you to maintain the vehicle's factory handling parameters. The component has been designed specifically for the car's weight, load distribution, and the operating characteristics of the all-wheel drive, which is particularly important during dynamic driving and in conditions with limited grip.

Key advantages include:

• consistency with the factory running gear – no need for adaptation or structural modifications,
• properly selected gear ratio, providing a compromise between maneuverability and stability,
• compatibility with factory safety systems, such as electronic stability control.

Installation and operational characteristics

The steering rack is intended for installation in the front of the vehicle, in the factory location, which facilitates service work and reduces replacement time. The rack-and-pinion design with electric power steering allows for maintaining proper system rigidity and limits play that could negatively affect steering precision.

When selecting this type of component, it is worth paying attention to:

• compatibility with the specific body and drive version,
• correct placement on the vehicle (front),
• selection of appropriate accompanying accessories (e.g., tie rods, ends, mounts) compatible with the steering system of the given model.

Using a used part in the steering system

A used component allows for reducing repair costs while maintaining the original design of the steering system. In practice, this means the possibility of restoring the proper operation of the mechanism without having to resort to replacements of uncertain specifications. In the case of systems responsible for driving safety, it is essential that the installation and verification of the technical condition are performed by an experienced service center.

Expanding the modernization of the Mercedes steering system

If you are planning a comprehensive repair or modernization of the steering zone in your Mercedes and need other elements from the same group, such as other steering racks, housings, or related components, check the available parts in the Mercedes steering racks and housings category.

For drivers considering broader intervention in the running gear and the selection of used suspension components and elements working with the steering system, a guide article describing the differences between stock and sports solutions may be helpful – you can find it here: Stock vs. sports suspension – differences in construction and selection of used parts.