Mercedes W177 Wishbone Control Arm Front Suspension Left N/S Axle Strut

Mercedes W177 Wishbone Control Arm Front Suspension Left N/S Axle Strut is an original chassis component from the Control arms and ball joints group, designed for operation in the front left corner of the suspension. Precise geometry and factory-fitment to the Mercedes design ensure stable vehicle handling, predictable cornering behavior, and proper interaction with other suspension components.

Specifications and technical data

• SKU: A1773308200
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1773308200
• Substitutable numbers: A1773308200, A 177 330 82 00, A2473331500, A 247 333 15 00
• Location on the vehicle: Front, Left
• Category: Control Arms, Ball Joints & Assemblies

Purpose and vehicle positioning

The presented control arm operates in the front axle area, on the left side, responsible for maintaining the correct position of the wheel relative to the body and for transferring loads from the road to the chassis. The positioning on the vehicle, defined as Front, Left, means that the component contributes to the main suspension geometry, affecting wheel alignment, camber, and driving stability during braking and acceleration.

Technical characteristics and role in the suspension system

The control arm from this design group has been engineered to provide a rigid yet resilient connection between the wheel hub and the body. In practice, this translates into:

• better vehicle control during dynamic maneuvers,
• even distribution of lateral and longitudinal forces,
• stable handling at higher speeds,
• proper cooperation with shock absorbers, springs, and ball joints.

By maintaining the factory suspension geometry, the control arm helps reduce uneven tire wear, improves steering precision, and supports the effectiveness of safety systems such as ABS or ESP.

Benefits of using an original Mercedes control arm

Using an original control arm in Mercedes W176 and W246 series models allows for maintaining the structural integrity of the entire chassis system. Key advantages include:

• Factory fitment – correct arm length and mounting points consistent with the manufacturer's design.
• Stable operation across the full range of loads – from daily city driving to long-distance travel.
• Optimal cooperation with ball joints and other elements from the Control arms and ball joints group.
• The ability to restore original handling parameters after a collision, hitting a curb, or wear of the previous component.

Condition of the component and practical service application

The offered control arm is a used part, which in service practice often represents a reasonable compromise between repair costs and maintaining original manufacturing quality. This type of component is frequently chosen for:

• post-accident repairs within the front suspension,
• mechanical damage after hitting an obstacle,
• geometry correction after identifying bending or play in the chassis system.

Selecting the correct control arm for a specific body and engine version should always be based on OEM data and mounting parameters to ensure full compatibility with the specific vehicle unit.

Technical support and selection of suspension components

If you are planning a comprehensive repair or upgrade of the front suspension area in your Mercedes and need other components from the same group, such as additional control arms, ball joints, or mounting hardware, check the available parts in the Mercedes Control arms and ball joints category.

To better understand the relationships between individual suspension components and the impact of control arms on safety and driving comfort, it is worth reading the guide: Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizers.

When selecting used parts, practical tips on verifying compatibility and OEM markings may also be helpful – you will find them in the article No more bad purchases! How to professionally select used car parts, which discusses how to reduce the risk of errors when buying components for a specific car model.