Mercedes W639 Rear Shock Absorber Damper Left Right N/O/S Set x2 844904012256

Mercedes W639 Rear Shock Absorber Damper Left Right N/O/S Set x2 is a robust set of components from the Shock absorbers and struts category, designed for operation on the vehicle's rear axle. The set includes a shock absorber for both the left and right sides, allowing for a consistent, technically correct replacement of both elements simultaneously. The N/O/S (New Old Stock) nature of the parts makes this an economical yet functional solution for users looking for proven suspension components.

Specifications and technical data

• SKU: SACHS-317-338
• Mark: Unbranded
• Condition: Used
• OEM Part Number: SACHS-317
• Substitutable numbers: 844904012256, 84 4904 012 256, 317-338, 317338
• Location on the vehicle: Rear, Right, Left
• Part type: Damper
• Category: Shocks, Struts & Assemblies

Purpose and vehicle placement

The presented set of shock absorbers is designed for installation on the rear axle of the vehicle, dedicated to both the right and left sides. This solution facilitates maintaining uniform suspension performance characteristics, which translates into predictable vehicle behavior during driving, braking, and traversing uneven surfaces.

The placement on the vehicle is clearly defined, which minimizes the risk of errors when selecting parts and streamlines the installation process in a professional service center or independent workshop.

Technical characteristics and compatibility

The rear shock absorber set belongs to the Shock absorbers and struts group, meaning it plays a key role in damping vibrations and stabilizing the bodywork. Using a pair of elements with the same technical specifications allows for maintaining consistent suspension performance parameters on both sides of the axle.

The product comes from a manufacturer labeled as Unbranded, which in practice means a neutral, universal approach to branding while maintaining the functionality required for this group of parts. Thanks to the presence of the OEM part number and interchangeable numbers (visible in the technical specification), precise verification of compatibility with a specific vehicle version is possible, which is particularly important when working in professional workshops.

Condition, service application, and benefits of installing the set

The shock absorbers are offered as N/O/S (New Old Stock) elements, which provides an attractive cost alternative to brand-new components, especially during comprehensive suspension repairs. Replacing both rear shock absorbers in a single service process:

• limits differences in damping characteristics between the left and right sides,
• allows the mechanic to perform a single intervention on the rear axle,
• facilitates subsequent diagnostics of any potential noises or play in the suspension.

For the user, this means more stable handling, better vehicle control, and predictable car behavior in daily operation.

Application in workshop practice and part selection

In a service environment, the rear shock absorber set for the Mercedes W639 will prove useful both for standard maintenance replacement and for repairs following collisions or intensive fleet operation. The presence of detailed markings in the technical specification (SKU, OEM part number, interchangeable numbers, brand, condition, and vehicle placement) facilitates integration with catalog systems and part selection software.

A set configured in this way is particularly useful for workshops that want to manage inventory in an organized manner and quickly identify the correct suspension components for a given vehicle.

Expansion of the offer and technical knowledge

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 shock absorbers, complete struts, or mounting brackets, check out the available parts in the Unbranded Shock absorbers and struts category.

To deepen your knowledge on the diagnostics and operation of suspension elements, including shock absorbers, it is worth checking out the guide material Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizers, which practically discusses the relationships between individual components and their impact on driving safety.