Smart Fortwo A451 C451 Brake Booster Vacuum Line Hose Tube Pipe A4514301829

Smart Fortwo A451 C451 Brake Booster Vacuum Line Hose Tube Pipe is an original brake system component from the Lines, hoses and pipes group, designed for Smart Fortwo A451/C451 series models. It ensures stable vacuum delivery to the brake booster, which translates into predictable brake assist performance and safe deceleration during daily operation.

Specifications and technical data

• SKU: RHD-A4514301829
• Mark: Smart
• Condition: Used
• OEM Part Number: A4514301829
• Substitutable numbers: A4514301829, A 451 430 18 29
• Part type: Line
• Category: Hoses, Lines & Pipes

Purpose and function in the brake system

The brake booster vacuum line in the Smart Fortwo A451/C451 is responsible for transporting vacuum from the supply system to the booster, enabling effective assistance for brake pedal pressure. A properly selected and airtight line allows for maintaining stable operating pressure, which limits the extension of braking distance and improves the repeatability of system response. This component is particularly important in vehicles used primarily in city traffic, where frequent braking generates high loads for the entire system. Using an original line dedicated to the Smart Fortwo minimizes the risk of leaks, vacuum drops, and unforeseen decreases in braking efficiency.

Construction and fitment for Smart Fortwo A451/C451

The offered line has been designed specifically for the engine bay geometry of the Smart Fortwo A451/C451, ensuring proper routing, bending radii, and mounting points. The appropriate shape limits material stress, reduces the risk of chafing against adjacent components, and facilitates installation in factory brackets. Precise fitment to the specific Smart platform translates into:

• a stable connection with vacuum system ports,
• maintaining airtightness within typical operating temperature ranges of the power unit,
• no need for modifications or shortening of the line during installation.

Benefits of using an original Smart line

Using a brake booster vacuum line from the original Smart production line allows for maintaining the factory operating parameters of the brake system. This solution is particularly beneficial for users who expect predictable vehicle behavior and compliance with the manufacturer's service documentation. Key advantages include:

• compatibility with the factory brake booster in the Smart Fortwo A451/C451,
• preservation of the assistance characteristics designed by the manufacturer,
• reduction of the risk of installation errors typical for universal-length replacements.

Using a used part in Smart service

The component comes from disassembly, which makes it an attractive cost alternative to new parts while maintaining the original manufacturer's specifications. For many users of older Smart Fortwo generations, this is a practical way to maintain the efficiency of the brake system without having to resort to universal replacements with uncertain fitment. If you want to better understand when it is worth reaching for parts from disassembly and how to safely select them for older models, check out our guide: No parts at the authorized service center? How to deal with repairing older models using parts from disassembly.

Comprehensive Smart brake system service

Replacing the brake booster vacuum line often goes hand in hand with inspecting other brake system elements, such as flexible hoses, rigid pipes, or other components responsible for pressure transmission. If you are planning a comprehensive repair or upgrade of the braking zone in your Smart and need other elements from the same group, such as flexible hoses, rigid pipes, or additional sections of the vacuum installation, check the available parts in the Smart lines, hoses and pipes category.