Mercedes W166 Brake Booster Vacuum Hose Pipe A1664301529

Mercedes W166 Brake Booster Vacuum Hose Pipe is an original brake system component, belonging to the Lines, hoses and pipes group. Designed specifically for the W166 platform, it ensures stable vacuum supply to the brake booster, which translates into predictable brake pedal operation and safe deceleration. This used OEM component is a sensible choice when servicing the factory brake system in Mercedes vehicles.

Specifications and technical data

• SKU: A1664301529
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1664301529
• Substitutable numbers: A1664301529, A 166 430 15 29
• Category: Hoses, Lines & Pipes

Purpose and function in the brake system

The Mercedes W166 Brake Booster Vacuum Hose Pipe is responsible for transporting vacuum from the supply system to the brake booster. A correctly selected and airtight component:

• stabilizes the braking assistance force on the brake pedal,
• reduces the risk of decreased braking efficiency during dynamic driving,
• supports proper cooperation between the booster and other brake system components.

By maintaining the factory geometry and diameter of the hose, the brake system operates within the parameters specified by the vehicle manufacturer.

Construction and fitment for Mercedes W166

The hose in question belongs to the Lines, hoses and pipes group, which means it has been designed to work under variable pressure loads and in the high-temperature conditions of the engine compartment. The hose construction is optimized for:

• wall rigidity – limits deflection and collapsing of the hose under high vacuum,
• vibration resistance – minimizes the risk of micro-cracks and leaks,
• precise routing in the engine compartment – facilitates installation in original brackets.

As an OEM part, the hose retains factory mounting points and routing, which simplifies service and avoids the need for system modifications.

Condition, service application and benefits of installation

The item is offered in used condition, making it an attractive solution for maintenance repairs where the priority is to maintain original specifications at controlled costs. Replacing the brake booster vacuum hose is particularly recommended when symptoms occur such as:

• a hard brake pedal when pressed for the first time after starting the engine,
• uneven or variable braking assistance,
• suspected leaks in the vacuum circuit.

Using an original hose allows you to restore the predictable performance characteristics of the brake system without the need to adapt aftermarket replacements with uncertain parameters.

Support with selection and system expansion

When selecting a vacuum hose for the brake booster in a Mercedes, it is crucial to match it to the specific platform and brake system configuration. If necessary, you can verify the compatibility of the part with a specific engine version and model year to avoid installation issues and ensure the proper operation of the entire system.

If you are planning a comprehensive repair or upgrade of the braking zone in your Mercedes and need other components from the same group, such as vacuum lines, flexible brake hoses, or rigid pipes leading to the calipers, check the available parts in the Mercedes lines, hoses and pipes category.

Additional technical materials

For users interested in a broader context regarding the selection of used OEM components and their impact on vehicle performance characteristics, an article comparing various solutions in terms of engine accessories and forced induction systems may be helpful. More information can be found in the material: Go-Kart Feeling XXL: used N18 turbocharger vs B48 – what to choose for a Mini Cooper S?.