Mercedes W639 Rear Left N/S Coil Spring Set X2 A6393242804

Mercedes W639 Rear Left N/S Coil Spring Set X2 is an original suspension component from the Leaf springs and coil springs group, designed for installation on the left side of the rear axle. The set of two coil springs ensures consistent, predictable suspension behavior and stable body support during daily operation.

Specifications and technical data

• SKU: A6393242804
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6393242804
• Substitutable numbers: A6393242804, A 639 324 28 04
• Location on the vehicle: Rear, Left
• Category: Leaf & Coil Springs

Purpose and vehicle placement

The presented set of springs has been designed specifically for the rear left side of the vehicle, which guarantees a proper fit to the suspension geometry of the Mercedes W639 series. Using two identical components in the set allows for even load distribution and maintaining the correct height of the rear body section.

Coil springs in this area operate under demanding conditions – they are responsible for supporting the axle, stability while driving with a load, and comfort in damping unevenness. Selecting the right component for a specific model and installation side is crucial for maintaining the correct suspension performance characteristics.

Technical and functional characteristics

As an original Mercedes component, the coil spring maintains factory deflection and stiffness characteristics, which translates into predictable vehicle handling. The spring design is adapted to the typical rear axle loads in W639 models, ensuring the suspension operates within the range specified by the manufacturer.

The main advantages of using original coil springs in this model include:

• maintaining proper suspension geometry and rear vehicle height,
• stable vehicle behavior under full load,
• consistent operation with other suspension system components,
• reducing the risk of uneven tire wear and suspension component wear.

Condition and benefits of using original used parts

The offered set comes from the original Mercedes production line, which means it maintains compliance with factory design standards. In the case of suspension springs, this is of particular importance – operating parameters are matched to the vehicle weight, load distribution, and shock absorber characteristics.

Choosing original used components allows for maintaining high quality and compatibility while optimizing service costs. This is a particularly beneficial solution for comprehensive suspension maintenance, when pairs of components are replaced on both sides of the axle.

If you want to better understand why original used Mercedes components are a sensible choice in terms of durability and comfort, it is worth reading the article: Mercedes – comfort, prestige, and durability. Why is it worth choosing original used parts?

Application in the suspension system and installation recommendations

The rear coil springs in the Mercedes W639 work in conjunction with shock absorbers and other suspension system components, creating a cohesive system responsible for safety and driving comfort. Replacing them as an X2 set on one axle is recommended to maintain suspension symmetry and even deflection on both sides.

During installation, it is worth paying attention to:

• installing both springs as part of a single service operation,
• checking the condition of shock absorbers and mounting elements,
• verifying suspension geometry after the replacement is completed.

Expanding Mercedes suspension service

If you are planning a comprehensive repair or upgrade of the rear suspension area in your Mercedes and need other elements from the same group, such as additional springs, leaf springs, or auxiliary suspension components, check the available parts in the Mercedes leaf springs and coil springs category.