Steering Column Mercedes W639 Vito Manual Adjustable Shaft Tube A6394620420

Steering Column Mercedes W639 Vito Manual Adjustable Shaft Tube is a factory-original steering system component designed for models with manual transmission. It is responsible for precisely transferring steering wheel movement to the steering gear, directly impacting driving stability, safety, and handling comfort. This OEM solution allows you to maintain the original steering characteristics of the Mercedes Vito W639.

Specifications and technical data

• SKU: A6394620420
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6394620420
• Substitutable numbers: A6394620420, A 639 462 04 20, KZ
• Gearbox type: Manual
• Category: Steering Columns

Purpose and function in the steering system

The steering column in the Mercedes Vito W639 is a key component connecting the steering wheel to the rest of the steering system. It is responsible for:

• transferring torque from the steering wheel to the steering gear,
• maintaining alignment and connection rigidity,
• working in conjunction with the vehicle's passive safety systems.

By using an original steering column from this series, structural compatibility with the factory system is maintained, which is important for both standard operation and the intensive use of a commercial vehicle.

Compatibility with manual transmission

The presented steering column is designed for versions of the Mercedes Vito W639 equipped with a manual transmission. This ensures a perfect fit for the specific pedal layout, interior geometry, and routing of components in vehicles with a manual gearbox.

Selecting a component compatible with the transmission type minimizes the risk of installation issues, such as incorrect steering wheel positioning, interference with other components, or the need to modify factory mounts.

Benefits of using an original steering column

Using a steering column sourced from Mercedes provides a range of practical benefits in daily operation:

• Factory fit – maintaining the original steering system geometry without the need for structural modifications.
• Consistency with other system components – compatibility with mounts, joints, and accessories intended for the Vito W639.
• Consistent, predictable vehicle behavior – especially important in commercial vehicles operating under load.

This solution is particularly beneficial for post-accident repairs, replacing worn-out components, or restoring full steering system functionality in fleet-operated vehicles.

Condition and service application

The steering column comes from the secondary market, allowing for cost-effective repairs while maintaining the original manufacturer specifications. Such components are frequently used in professional workshops specializing in commercial vehicle repairs, where both cost and compliance with factory solutions are prioritized.

Before installation, standard service procedures are recommended: inspecting mounting points, checking for operational play, and verifying compatibility with the existing steering gear and accessories in the specific vehicle.

More about the steering system and diagnostics

To better understand the role of the steering column in the overall vehicle steering system, it is worth reviewing our guide covering the construction, common symptoms of wear, and examples of components used in repairs – this is detailed in the article Steering system and power steering – how it works and what fails?.

If you are planning a comprehensive repair or upgrade of the steering area in your Mercedes and need other components from the same group, such as other columns, intermediate shafts, or compatible mounts, check out the available parts in the category Mercedes steering columns.