Mercedes W177 A35 AMG Electric Power Steering Rack Box Pinion Gear A1774601101

The Mercedes W177 A35 AMG Electric Steering Rack is an original steering system component designed for precise front-axle control in the A35 AMG model. Thanks to the use of electric power assistance, it ensures accurate vehicle handling, stability at higher speeds, and predictable steering response, which is crucial for a sports-oriented car.

Specifications and technical data

• SKU: rhd-A1774605101
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1774605101
• Substitutable numbers: A1774605101, A 177 460 51 01, A1774601101, A 177 460 11 01, 6700004007B, 6700 004 007B
• Category: Gearboxes, Racks & Pinions

Technical Characteristics and Function in the Steering System

The described electric rack and pinion steering gear is responsible for transferring torque from the steering column to the front wheel knuckles, with simultaneous support from an electric motor. In conjunction with the vehicle's suspension and electronics, it enables:

• precise translation of steering wheel movement into wheel turning,
• stable trajectory maintenance during dynamic acceleration and braking,
• smooth speed-dependent power assistance,
• cooperation with safety systems, such as lane assist or stability control systems (within the scope of the car's configuration).

The electric solution eliminates the need for a conventional hydraulic pump, resulting in a more direct operating characteristic and better energy efficiency for the entire system.

Original Origin and Fitment for Mercedes A35 AMG

The steering rack and housing come from the Mercedes parts line, ensuring factory operating parameters and full compatibility with the front suspension design and steering geometry of the W177 A35 AMG model. Original manufacturing guarantees:

• correct mounting points to the body and suspension,
• appropriate length of the toothed rack and travel stroke,
• compatibility with factory sensors and the vehicle's electrical harness,
• consistency with the steering system control software.

This allows the component to be used as a replacement for a damaged steering rack without the need for mechanical modifications, while maintaining the handling characteristics intended by the manufacturer.

Condition, Application, and Benefits of Installation

The offered steering rack is a used component, allowing for an economical repair of the steering system while maintaining the original Mercedes specification. This type of solution is particularly beneficial in cases of:

• mechanical damage after a collision (play, seizing, leaks, housing damage),
• failure of the electric power assistance or integrated sensors within the rack,
• excessive wear of the steering rack, manifesting as noise or uneven operation.

Installing an original electric steering rack restores proper steering system function, leading to safe vehicle handling, correct operation of driver assistance systems, and comfortable everyday use of the car.

Part Selection by Numbers and Vehicle Compatibility

The component should always be selected based on the OEM part number and interchangeable numbers assigned to the specific vehicle configuration. This helps avoid problems with installation, incorrect power assistance operation, or errors in electronic systems. If in doubt, it is advisable to compare the markings with the currently installed steering rack or service documentation to ensure full compatibility with your specific Mercedes A35 AMG.

Expanding Steering System Repair

If you are planning a comprehensive repair or upgrade of the steering system area in your Mercedes and need other components from the same group, such as tie rods, ball joints, or steering rack housings, check the available parts in the category Mercedes Steering Racks and Housings.

To better plan the scope of service work and vehicle downtime, you can also read our blog post: Availability of Car Parts Off-the-Shelf vs. Repair Time – How Used OEM Parts Shorten Workshop Stays?.