Shock Absorber Mercedes W166 X166 Rear Left Right N/O/S A1663202630

Shock Absorber Mercedes W166 X166 Rear Left Right N/O/S is an original suspension system component from the Shock absorbers and struts group, designed for installation on the rear axle on the left side. This used OEM component ensures proper vibration damping, body stabilization, and predictable vehicle behavior during daily operation.

Specifications and technical data

• SKU: A1663202630-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1663202630
• Substitutable numbers: A1663202630, A 166 320 26 30
• Location on the vehicle: Rear, Left
• Category: Shocks, Struts & Assemblies

Purpose and function in the suspension

The presented shock absorber has been designed specifically for the Mercedes W166 / X166 platform, taking into account the operating characteristics of the rear axle. The placement on the vehicle is limited to the rear left side, which allows for precise adjustment to the suspension geometry and factory mounting points.

This component is responsible for:

• damping vertical body movements when driving over bumps,
• maintaining vehicle stability during braking and acceleration,
• improving the grip of the rear axle wheels to the road surface.

Benefits of using an original shock absorber

Using an original shock absorber in a Mercedes W166 / X166 allows you to maintain the factory handling characteristics of the vehicle. Precisely selected operating parameters ensure predictable car reactions, which is important both in city driving and on the highway. The used OEM component is a beneficial solution for users who want to maintain compliance with the factory specification without having to use replacements with uncertain parameters.

The shock absorber from the Shock absorbers and struts category works with other suspension components, such as springs or control arms, influencing ride comfort, driving stability, and the effectiveness of active safety systems.

Fitment, installation, and identification parameters

The product has dedicated manufacturer markings and reference numbers, which facilitates verification of compatibility with a specific version of the Mercedes W166 / X166. This makes it possible to quickly check compatibility with the vehicle based on the OEM part number and interchangeable numbers, without the need to interfere with the suspension structure.

The placement on the vehicle, defined as rear left, helps avoid mistakes when selecting the element for a given side of the axle. Correct fitment of the installation side is important for maintaining proper suspension geometry and even operation of both rear axle shock absorbers.

Condition and use in vehicle service

The offered shock absorber is a used item, which makes it an attractive cost-effective alternative for suspension maintenance repairs. It works especially well in situations where it is necessary to replace a single component to restore proper system operation while maintaining the original manufacturer's specification.

Replacing the rear left shock absorber is recommended in case of noticeable deterioration in ride comfort, increased braking distance, body instability, or uneven tire wear. Selecting the right OEM component reduces the risk of improper suspension operation and accelerated wear of other parts.

Suspension system expansion and educational materials

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

To better understand the relationships between shock absorbers, control arms, and stabilizers and their impact on driving safety, it is worth checking out our guide: Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizers. This will make it easier for you to assess when replacing a single shock absorber should be supplemented with additional service work.