Mercedes Vito W639 Brake Caliper Front Left N/S Bosch 300X28 A6394201083

Mercedes Vito W639 Brake Caliper Front Left N/S Bosch 300X28 is an original braking system component designed for installation on the front left axle of the vehicle. Thanks to its design, adapted for a 300 mm diameter and 28 mm thick brake disc, it ensures stable brake pad guidance and consistent braking force. This is a solution for users who expect factory-fit, predictable performance, and hassle-free installation.

Specifications and technical data

• SKU: A6394201083
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6394201083
• Substitutable numbers: A6394201083, A 639 420 10 83
• Location on the vehicle: Front, Left
• Category: Calipers & Brackets

Purpose and compatibility with the braking system

The presented caliper is designed specifically for the front left axle in Mercedes Vito W639 generation models. The body geometry, mounting points, and pad guidance are consistent with the manufacturer's factory specifications, which facilitates installation and reduces the risk of misalignment with the brake disc.

The configuration for the 300x28 disc allows for effective heat dissipation and stable operation under typical operating conditions of a Mercedes commercial vehicle. The use of a Bosch solution in this system promotes even pad pressure and consistent braking characteristics.

Construction and performance parameters

The caliper belongs to the Brake calipers and brackets group, meaning it is responsible for both guiding the brake pads and transferring hydraulic force to the disc. The design intended for operation on the front driver's side of the vehicle ensures appropriate body rigidity and resistance to loads typical for a drive or steering axle (depending on the vehicle version).

The Bosch solution is characterized by precise piston and pad guidance, which reduces the risk of uneven pad wear. Properly selected working dimensions allow for maintaining the correct contact surface with the 300x28 disc, which translates into predictable braking efficiency in daily operation.

Benefits of using an original caliper

Choosing an original caliper for the Mercedes Vito W639 primarily means compliance with the vehicle's factory specifications. This includes:

• secure fitment to the steering knuckle and brake disc on the front left side,
• maintenance of the braking system's performance characteristics as intended by the manufacturer,
• no need for modifications to mounts or brake lines.

As a result, this component can be used both for standard replacement of a worn caliper and for comprehensive braking system maintenance, where the consistency of all components is essential.

Professional selection and operation of a used component

As a part from the secondary market, the caliper allows for reduced service costs while maintaining a design consistent with the factory solution. This is particularly beneficial for commercial vehicles, where the ratio of maintenance costs to mileage and operational load is important. A correctly selected caliper for the front left side enables the maintenance of balanced braking forces between the sides of the vehicle, which is crucial for stability during emergency braking.

To better understand how to safely use used braking system components and how to optimize service costs, it is worth reading the guide: Brake calipers under the microscope: How to effectively reduce braking system repair costs by choosing verified recycled parts.

Expansion and service of the braking zone in Mercedes Vito

If you are planning a comprehensive repair or upgrade of the braking zone in your Mercedes and need other elements from the same group, such as additional calipers, brackets, or guide holders, check the available parts in the Mercedes brake calipers and brackets category.

For drivers considering wider use of secondary market parts while maintaining manufacturer standards, the following practical material may also be helpful: 5 reasons why a used OEM part is a better choice than a replacement.

Summary

Mercedes Vito W639 Brake Caliper Front Left N/S Bosch 300X28 is a functional choice for users who expect factory-fit, predictable performance, and rational braking system maintenance costs. Its correct placement on the vehicle, compatibility with the 300x28 disc, and design developed for the Mercedes Vito make this component well-suited for professional service maintenance of a commercial vehicle.