Audi VW Brake Master Cylinder - Genuine VW Audi 3D0611021

Product Information

Audi Brake Master Cylinders diagram for A8 Quattro, Phaeton, R8, S8

The brake master cylinder is responsible for taking the mechanical energy from the brake pedal input and transferring it to hydraulic energy providing hydraulic pressure to all 4 wheels. While not a typical maintenance item, a brake master cylinder can wear out and fail most commonly due to worn out internal seals.

• Spongy Pedal Feel
• Loss of brake operation
• Poor brake performance
• Internal fluid leaks
• External fluid 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.