The Audi A6 C8 3.0 TDI Brake Booster Vacuum Hose is an original brake system component from the hoses, pipes, and tubes group, designed for use with the brake booster in the Audi A6 C8 model with a 3.0 TDI engine. This used OEM part ensures proper vacuum in the system, contributing to stable brake assist operation and predictable vehicle behavior during braking.
Specifications and technical data
- SKU: 4K0611931AF
- Mark: Audi
- Condition: Used
- OEM Part Number: 4K061931AF
- Substitutable numbers: 4K061931AF, 4K0 619 31A F
- Part type: Pipe
- Category: Hoses, Lines & Pipes
Purpose and Function in the Braking System
The vacuum hose for the brake booster in the Audi A6 C8 3.0 TDI is responsible for safely delivering vacuum from the engine to the brake booster. A correctly selected component:
- stabilizes brake assist operation under various engine loads,
- reduces the risk of reduced braking effectiveness due to leaks,
- ensures proper brake pedal response across the entire speed range.
Thanks to its factory-designed geometry and precise fit for the specific body version and 3.0 TDI engine, the hose maintains proper routing within the engine bay and does not interfere with other components.
Advantages of Using an Original Audi Hose
Using an original brake booster vacuum hose in the Audi A6 C8 offers a range of practical operational benefits:
- Factory Fitment – ensures compatibility with mounting points, connector diameters, and hose routing in the engine bay.
- Appropriate material resistance to temperature and vacuum, meeting the requirements of the 3.0 TDI unit.
- Reduced risk of micro-leaks compared to aftermarket alternatives of uncertain origin.
- Allows for direct replacement of a damaged component without the need for installation modifications.
For users who value predictable braking system performance, choosing an original hose from the Hoses, pipes, and tubes category is a technically sound solution.
Component Condition and Installation Aspects
The offered brake booster vacuum hose is a used component, allowing for economical repairs while maintaining an OEM part. Before installation, standard leak testing and inspection of the connection ends for proper seating on the booster and vacuum source spigots are recommended.
When replacing, pay attention to:
- correct routing of the hose relative to factory brackets and shields,
- absence of twists and excessive material stress after tightening the fasteners,
- checking brake assist operation after the first few kilometers of a test drive.
Safety, Diagnostics, and Operation
A functional brake booster vacuum hose directly impacts driving safety as it is responsible for stable brake assist. Symptoms such as a hard brake pedal, uneven booster operation, or extended braking distances may indicate a leak in this area of the system.
For vehicles with a 3.0 TDI engine, regular inspection of vacuum components is particularly important due to the complex control system architecture and the presence of numerous vacuum consumers. Replacing a worn hose with an original component restores the system's correct operating parameters without affecting other sub-assemblies.
If you also need other vacuum or brake system components for your Audi and want to maintain consistency in your chosen solutions, check the available parts in the Audi Hoses, pipes, and tubes category.
For drivers interested in a broader context of modern diesel engine systems, including the impact of vacuum systems on exhaust emissions and engine operation, the article EGR: What it is and why considering used EGR valves is worthwhile may be helpful, discussing practical aspects of operation and selection of used components.
