Mercedes W176 W246 Brake Servo Master Cylinder Expansion Tank A2464301330

Mercedes W176 W246 Brake Servo Master Cylinder Expansion Tank is a complete solution designed for braking systems in gasoline-powered vehicles. This component is responsible for braking force assistance, stable circuit pressure, and the safe operation of the entire system, which translates into predictable vehicle behavior during daily use.

Specifications and technical data

• SKU: RHD-A2464300302
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2464300302
• Substitutable numbers: A2464300302, A 246 430 03 02, A2464300401, A 246 430 04 01
• Fuel type: Petrol
• Part type: Brake Servo & Master Cylinder
• Category: Brake Servos

Purpose and function in the braking system

The described set of brake servo, master cylinder, and expansion tank has been designed specifically for Mercedes A-Class (W176) and B-Class (W246) models with gasoline engines. As a component from the Brake Servos and Proportioning Valves group, it is responsible for the correct conversion of brake pedal pressure into pressure in the lines, as well as for stable braking characteristics under various road conditions.

Combining the servo with the master cylinder and expansion tank into a single assembly facilitates diagnostics and replacement, and reduces the risk of leaks at the connections between components. This solution is particularly beneficial when servicing vehicles used intensively in city traffic.

Set construction and benefits of installation

The set includes key components responsible for generating and maintaining pressure in the braking system, which allows for the consistent operation of the entire system. Using an original Mercedes solution promotes:

• maintaining the factory brake pedal feel,
• proper cooperation with safety systems (ABS, ESP – if present in the vehicle),
• reduction of vibrations and noise transmitted to the body,
• easier adaptation in place of a worn or damaged assembly.

Thanks to this, the driver receives consistent and predictable brake performance, which has a direct impact on driving comfort and safety.

Condition, origin, and fitment

The item comes from dismantling and is offered as a used original Mercedes component. This type of part is a cost-effective solution for users who want to maintain the vehicle to OEM standards while optimizing repair costs. The assembly is intended for gasoline-powered cars, which is important when selecting the appropriate variant for a specific engine version.

Before installation, it is recommended to verify compatibility with the part number, body version, and engine unit to ensure full mechanical fitment and proper cooperation with the existing braking system.

Installation and operational tips

When replacing the brake servo assembly with the master cylinder and expansion tank, it is worth paying attention to:

• thorough bleeding of the braking system after installation,
• checking the condition of brake lines and flexible connections,
• checking the tightness of connections at the expansion tank,
• verifying the travel and operation of the brake pedal after the first few kilometers of a test drive.

Such an approach allows you to fully utilize the potential of the set and maintain stable braking parameters in the long term.

To better take care of the durability of components from dismantling, it is worth reading the practical tips described in the article How to extend the life of used car parts?, where, among other things, the principles of maintenance and proper operation of mechanical elements are discussed.

Expanding the Mercedes braking system

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 servos, brake proportioning valves, or related assistance modules, check the available parts in the Mercedes Brake Servos and Proportioning Valves category.

Summary

The Mercedes W176 W246 Brake Servo Master Cylinder Expansion Tank is a technically matched, original element from the Brake Servos and Proportioning Valves group, intended for gasoline vehicles. Choosing this component allows you to restore the correct operation of the braking system, maintain consistency with the vehicle's factory design, and maintain a high level of safety during daily driving.