Mercedes W177 Spring Strut Rear Left Right N/O/S Shock Absorber A1773206303

Mercedes W177 Spring Strut Rear Left Right N/O/S Shock Absorber is an original component from the Shock absorbers and struts group, designed for operation on the vehicle's rear axle. The design, adapted for installation on either the left or right side of the rear body, ensures consistent vehicle handling and stable vibration damping. This is a solution for users expecting precise suspension performance and the preservation of the Mercedes factory driving characteristics.

Specifications and technical data

• SKU: A1773206303
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1773206303
• Substitutable numbers: A1773206303, A 177 320 63 03
• Location on the vehicle: Rear, Right, Left
• Category: Shocks, Struts & Assemblies

Purpose and vehicle placement

The presented shock absorber is designed for installation on the rear axle of the vehicle, with the possibility of mounting it on both the left and right sides. This solution facilitates part selection during suspension maintenance and allows for the maintenance of damping system symmetry. Its placement in the rear of the car is crucial for stability during acceleration, braking, and driving with a loaded trunk.

Technical and functional characteristics

The shock absorber from this reference works in the suspension system as an element responsible for controlling spring movement and limiting body roll. Properly selected damping characteristics help to:

• maintain constant contact between the wheels and the road surface,
• reduce body sway on uneven surfaces,
• improve handling stability in corners,
• increase travel comfort during daily use.

Thanks to its factory origin from the Mercedes brand, the shock absorber works with other suspension components according to the manufacturer's specifications, which translates into predictable vehicle behavior and consistent steering responses.

Condition, origin, and benefits of choosing OEM parts

The offered item comes from the line of original Mercedes components and is classified as used. For many users, this represents a favorable compromise between cost and maintaining factory specifications – especially in the case of advanced suspension systems, where fitment and compliance with the manufacturer's design are of great importance. Choosing an original shock absorber from this group allows you to reduce the risk of compatibility issues that may occur with aftermarket parts of uncertain origin.

Why it is worth using this shock absorber in a Mercedes W177

Using the correct shock absorber on the rear axle directly affects safety and handling predictability. Replacing a worn element with an original component from the Shock absorbers and struts group helps restore:

• vehicle stability at higher speeds,
• braking confidence on uneven surfaces,
• more linear suspension reactions to load,
• ride comfort close to factory levels.

This is particularly important in modern Mercedes models, where the suspension system is precisely tuned and sensitive to the quality of the components used.

If you are planning a comprehensive repair or upgrade of the rear axle suspension zone in your Mercedes and need other elements from the same group, such as additional shock absorbers, complete struts, or mounting brackets, check the available parts in the Mercedes shock absorbers and struts category.

Technical support and knowledge about the suspension system

For users who want to better understand the role of shock absorbers in the entire chassis system, a guide describing the cooperation of shock absorbers, control arms, and stabilizers in various car models will be useful. A detailed discussion of issues related to diagnostics and operation can be found in the article Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizers.

If you are considering a choice between new replacements and original components from the secondary market and want to compare costs and typical quality differences, the guide material New or used? A comparison of costs and quality of car parts, which discusses practical aspects of part selection based on real service scenarios, may also be helpful.