Mercedes-Benz A B Class W176 W246 Brake Servo Inlet Outlet Pipe Hose Set

The Mercedes-Benz A/B Class W176/W246 Brake Booster Vacuum Hose Kit is an original set designed for the factory brake system of these models. This component is responsible for stable vacuum supply to the brake booster, which translates to predictable brake pedal operation and safe speed deceleration. As an original Mercedes component, it ensures correct geometry, connection diameters, and compatibility with the factory booster and accessories.

Specifications and technical data

• SKU: rhd-A2464201726
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2464201726
• Substitutable numbers: A2464201726, A 246 420 17 26, A2464201826, A 246 420 18 26, BG
• Category: Power Steering Pumps

Purpose and Technical Function

The presented brake booster inlet and outlet hose set is specifically designed for Mercedes-Benz A and B Class models of the W176/W246 generation. Its function is to maintain a sealed, efficient vacuum flow between the vacuum source and the brake booster, enabling proper assistance for brake pedal force.

Thanks to its factory profile and appropriately selected connection diameters, these hoses minimize pressure drops, reduce the risk of leaks, and ensure consistent brake system performance under various operating conditions.

Kit Construction and Benefits of Use

The kit includes hose sections responsible for both supplying and returning vacuum from the brake booster. The design intended by the vehicle manufacturer guarantees:

• correct routing of hoses in the engine bay,
• appropriate stiffness and temperature resistance,
• compatibility with factory connectors and mountings,
• reduction of vibrations and stresses during engine operation.

Using an original hose kit helps avoid problems typical of aftermarket replacements, such as incorrect lengths, improper outlet angles, or overly soft material that can lead to kinks and restricted vacuum flow.

Condition, Fitment, and Service Application

This part belongs to the Power Steering Pumps group, but in practice, it plays a crucial role in the brake system's assistance, working with the brake booster and the vacuum source. The product is used, which, in the case of original Mercedes components, allows for an economical yet technically correct vehicle repair, especially when maintaining the factory system configuration is a priority.

It is always advisable to confirm part selection based on the OEM number or vehicle VIN to ensure full compatibility with the specific engine version and model year. This allows the hose kit to be used for both standard replacement of worn parts and repairs after mechanical damage in the engine bay.

Importance for Safety and Driving Comfort

A functional brake booster vacuum system directly impacts braking distance and the perceived assistance force at the pedal. Leaking or deformed hoses can cause:

• a hard brake pedal and reduced assistance,
• irregular booster operation,
• increased driver effort during intense braking.

Replacing worn hoses with an original kit dedicated to the Mercedes-Benz A/B Class W176/W246 restores predictable braking characteristics and improves overall driving comfort, which is particularly important for daily city driving and highway travel.

If you are planning a comprehensive repair or upgrade of the braking area in your Mercedes and need other components from the same group, such as vacuum hoses, booster supply elements, or components that work with the assistance system, check the available parts in the Mercedes Power Steering Pumps category.

Additional Information and Educational Materials

When performing service work on assistance and supply systems, it is beneficial to understand the relationships between individual vehicle components. An article describing diagnostics and part selection by OEM number and VIN can be helpful, available here: Fuel System – Injectors, Pumps, and Fuel Tank: Maintenance and Repair. Although it concerns a different system, it presents universal principles for working with OEM components, their repair, and proper operation.

If you are interested in the broader use of branded, used components in vehicle upgrade projects, it is also worth reading the guide: Best Used Parts for Tuning Your Car, which discusses a practical approach to selecting proven parts from the aftermarket.