Mercedes Vito W639 Suspension Leg Front Left N/S Spring Strut Wheel Brake Disc

Mercedes Vito W639 Suspension Leg Front Left N/S Spring Strut Wheel Brake Disc is a complete front suspension assembly designed for the driver's side front axle. The set includes the suspension leg with the steering knuckle and brake disc, which facilitates maintenance and allows for a consistent, technically correct replacement of the entire sub-assembly in a Mercedes vehicle. This is a practical solution for workshops and users looking for a proven, used part in good operational condition.

Specifications and technical data

• SKU: A6393203613-4
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6393203613
• Substitutable numbers: A6393203613, A 639 320 36 13
• Location on the vehicle: Front, Left
• Category: Suspension Component Replacement Kits

Purpose and function in the suspension system

The presented suspension leg, integrated with the steering knuckle and brake disc, operates in the front axle area on the left side of the vehicle. It is responsible for wheel guidance, transferring loads from the body to the ground, and proper interaction with the brake and steering system components. By maintaining factory geometry, the sub-assembly helps maintain driving stability, correct wheel alignment, and predictable vehicle behavior during braking and maneuvering.

Construction of the suspension replacement set

The element belongs to the Suspension replacement sets group, which means that in one component you receive key parts responsible for wheel guidance and interaction with the brake. This configuration:

• simplifies the assembly process compared to replacing individual elements,
• reduces the risk of incorrect system assembly,
• makes it easier to maintain the technical consistency of the entire suspension corner.

For workshops, this means shorter working time and fewer service operations, and for the user – a more predictable repair result.

Benefits of using an original Mercedes sub-assembly

The original Mercedes component ensures a proper fit to the design of the Vito W639 model, without the need for modifications or assembly compromises. The factory geometry of the steering knuckle and suspension leg promotes:

• maintaining correct wheel alignment and camber angles,
• stable vehicle handling under load and during braking,
• even wear of tires and brake system components.

The used condition of the sub-assembly allows for lower repair costs while maintaining a design consistent with the manufacturer's solutions, which is particularly important in commercial vehicles used intensively.

Vehicle placement and assembly aspects

The sub-assembly is intended for installation on the front axle on the left side, which eliminates doubts regarding proper application. Clearly defined placement on the vehicle facilitates part selection in the catalog and service work planning. When replacing, it is recommended to check the cooperating suspension and brake elements to fully utilize the potential of the newly installed set.

Expanding suspension service in Mercedes Vito

If you are planning a comprehensive repair or upgrade of the front suspension zone in your Mercedes and need other elements from the same group, such as additional suspension legs, steering knuckles, or related mounting components, check the available parts in the Mercedes suspension replacement sets category.

More about used parts for Mercedes-Benz

When choosing used suspension elements, it is worth knowing the specifics of original dismantled components and their impact on durability and driving comfort. A broader discussion of the advantages of using original, used components in cars of this brand can be found in the article Used parts for Mercedes – original parts from dismantling, which helps to approach the service of Mercedes-Benz vehicles consciously.