Audi Vacuum Reservoir - Genuine Audi 06M131541C

Product Information

A Vacuum Reservoir is a storage component designed to maintain a consistent supply of vacuum pressure for various vehicle systems. Typically constructed from durable plastic or metal, the reservoir stores vacuum generated by the engine or vacuum pump and delivers it as needed to components such as HVAC controls, brake boosters, turbo actuators, and emission systems.

By stabilizing vacuum levels, the reservoir ensures reliable operation of systems that depend on steady vacuum pressure, especially during periods of low engine vacuum (such as acceleration or heavy load). It plays a key role in maintaining consistent performance and system responsiveness.

• HVAC airflow control issues – Inability to switch between vents (defrost, floor, dash).
• Reduced brake assist (in some systems) – Harder brake pedal due to insufficient vacuum supply.
• Engine performance issues – Vacuum leaks can cause rough idle or poor acceleration.
• Hissing noise – Audible vacuum leak from cracks or damaged connections.
• Loss of turbo or actuator control – In systems relying on vacuum-operated components.
• Check engine light – Triggered by vacuum-related faults or emissions issues.
• Inconsistent system operation – Components may work intermittently due to unstable vacuum levels.
• Visible cracks or damage – Physical deterioration leading to leaks.

About Genuine VW Audi

The Volkswagen Group, also known as “VAG”, consists of Volkswagen, Audi, Lamborghini, Bentley, Bugatti, Porsche, Ducati, MAN, Scania, SEAT, and Skoda. The original parts used by VAG to build your car are available as replacement parts under the “Genuine VAG” brand. Manufactured under the direction of VAG, expect excellent quality and a premium price since these parts are available exclusively through the VAG Dealership network.

You may not realize this, but the parts that make up your VAG are not necessarily manufactured by VAG. No cause for concern, as VAG designs the part, hires a manufacturer, and ensures its quality to you. In fact, many of these manufacturers have been making parts for VAG for decades. In our industry these manufacturers are called OEM (Original Equipment Manufacturers), and these are often brands you recognize, including Lemforder, ZF, Sachs, Bosch, Valeo, Zimmermann, Siemens VDO, Corteco, and more. Don’t be surprised to open that Genuine VAG parts box and find an OEM branded part inside, simply with the addition of a VAG logo.

Be sure to keep an eye out for OE tags on our product pages to quickly identify parts coming direct from OE manufacturers. That extra bit of insight could save you some serious money while shopping! Refer to our OE Academy for further information regarding the OE/OEM tags throughout the site.