Mercedes W176 Control Arm Rear Lower Suspension Swing Wishbone Part A1773521700

MERCEDES W176 Front and Rear Left Right Control Arm is a component from the control arms and ball joints category, designed for the rear axle of the vehicle. The original design ensures proper suspension geometry, stable vehicle handling, and predictable behavior during braking and acceleration. It's a practical choice for users looking for a proven, used suspension component for their compact class Mercedes.

Specifications and technical data

• SKU: A1773521700
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1773521700
• Substitutable numbers: A1773521700, A 177 352 17 00, BG
• Location on the vehicle: Rear
• Category: Control Arms, Ball Joints & Assemblies

Purpose and Function in the Suspension System

The presented control arm is intended for installation on the rear axle of Mercedes W176 series models. It is responsible for maintaining the correct wheel position relative to the body, transferring road loads, and cooperating with other elements of the multi-link suspension.

A correctly selected rear control arm influences:

• maintaining stable wheel geometry when driving straight and in corners,
• even tire wear,
• precise vehicle handling at higher speeds,
• effective operation of safety systems (ABS, ESP).

Benefits of Using an Original Mercedes Control Arm

An original control arm for the Mercedes W176 ensures a fit with factory mounting points and compliance with manufacturer-specified parameters. This results in:

• no need for modifications to suspension components or the body,
• preservation of factory handling characteristics,
• reduced risk of incorrect toe and camber settings.

This solution is particularly beneficial for users who want to keep their car in a configuration close to the factory original, without experimenting with aftermarket parts of uncertain parameters.

Component Condition and Service Application

The control arm is offered as a used part, which helps reduce repair costs while maintaining original manufacturer specifications. This type of component is often chosen for:

• rear axle post-accident repairs,
• mechanical damage after hitting an obstacle,
• excessive play in mounting points,
• suspension geometry correction after previous repairs.

The selection of the correct control arm for a specific body version and engine should always be verified based on the vehicle's catalog data.

Professional Installation and Geometry Check

After replacing the rear control arm, a full suspension geometry measurement and adjustment are recommended. This allows for:

• eliminating vehicle pulling to one side,
• preventing accelerated tire wear,
• restoring proper cornering handling.

For a lasting service effect, it is advisable to simultaneously inspect other system components such as bushings, ball joints, or shock absorbers to avoid the need for re-adjustment in a short period.

More About Control Arms and Suspension Maintenance

If you want to better understand the role of control arms in suspension operation and the signs of their wear, check out the guide: Suspension System – A Comprehensive Guide to Shock Absorbers, Control Arms, and Stabilizers. You will find practical tips on diagnosing and maintaining suspension components in popular models there.

Other Mercedes Control Arms and Ball Joints

If you are also looking for other elements from the same group, such as additional rear or front control arms, ball joints, or suspension arms for your car, check out the available Mercedes control arms and ball joints to select a complete service solution tailored to your model.

For users interested in extending the lifespan of dismantled components, the guide on used parts maintenance may also be useful: How to Extend the Lifespan of Used Car Parts, which contains practical tips on caring for suspension components.